{"id":48337,"date":"2024-01-16T21:35:13","date_gmt":"2023-04-11T04:57:05","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90go%e8%af%ad%e8%a8%80%e3%80%91%e5%88%9d%e6%ac%a1%e5%ae%9e%e7%8e%b0graphql%e6%9c%8d%e5%8a%a1%e5%99%a8-gqlgen\/"},"modified":"2024-05-04T18:42:17","modified_gmt":"2024-05-04T10:42:17","slug":"%e3%80%90go%e8%af%ad%e8%a8%80%e3%80%91%e5%88%9d%e6%ac%a1%e5%ae%9e%e7%8e%b0graphql%e6%9c%8d%e5%8a%a1%e5%99%a8-gqlgen","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90go%e8%af%ad%e8%a8%80%e3%80%91%e5%88%9d%e6%ac%a1%e5%ae%9e%e7%8e%b0graphql%e6%9c%8d%e5%8a%a1%e5%99%a8-gqlgen\/","title":{"rendered":"\u3010Go\u8bed\u8a00\u3011\u521d\u6b21\u5b9e\u73b0GraphQL\u670d\u52a1\u5668 | gqlgen"},"content":{"rendered":"<h1>\u5173\u4e8e\u8fd9\u7bc7\u6587\u7ae0<\/h1>\n<p>\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528Go\u8bed\u8a00\u5f00\u53d1GraphQL\u670d\u52a1\u5668\u3002<\/p>\n<h3>\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\u63d0\u53ca\u7684\u5185\u5bb9<\/h3>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">GraphQL\u306e\u30b9\u30ad\u30fc\u30de\u5b9a\u7fa9<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Go\u8a00\u8a9e\u3067GraphQL\u30b5\u30fc\u30d0\u306e\u958b\u767a\u65b9\u6cd5<\/ul>\n<\/li>\n<\/ul>\n<p>\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3068\u3057\u3066gqlgen\u3092\u5229\u7528<\/p>\n<p>\u30a8\u30e9\u30fc\u51e6\u7406<br \/>\n\u8ca0\u8377\u5bfe\u7b56<\/p>\n<p>N+1\u554f\u984c<br \/>\n\u30af\u30a8\u30ea\u306e\u5927\u304d\u3055\u5224\u5b9a<\/p>\n<h3>\u8fd9\u7bc7\u6587\u7ae0\u6ca1\u6709\u63d0\u5230\u7684\u5185\u5bb9\u662f\u4ec0\u4e48\u3002<\/h3>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Go\u8a00\u8a9e\u306e\u8aac\u660e<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">GraphQL\u306e\u6982\u8981\u306b\u3064\u3044\u3066<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9(MySQL\u7b49)\u3078\u306e\u63a5\u7d9a\u65b9\u6cd5<\/ul>\n<h3>\u6e90\u4ee3\u7801<\/h3>\n<p>\u8fd9\u7bc7\u6587\u7ae0\u4ecb\u7ecd\u7684\u4ee3\u7801\u5df2\u653e\u7f6e\u5728Github\u4e0a\u3002<br \/>\nhttps:\/\/github.com\/hiroyky\/go_graphql_server_sample<\/p>\n<h1>\u524d\u63d0<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Go\u8a00\u8a9e\u306e\u57fa\u672c\u7684\u306a\u77e5\u8b58\u304c\u3042\u308a\u3001\u304a\u4f7f\u3044\u306e\u30de\u30b7\u30f3\u3067Go\u8a00\u8a9e\u306e\u30d3\u30eb\u30c9\u3084\u5b9f\u884c\u304c\u3067\u304d\u308b\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">GraphQL\u306e\u6982\u8981\u306b\u3064\u3044\u3066\u77e5\u8b58\u304c\u3042\u308b\u3002<\/ul>\n<p>GraphQL\u7684\u6982\u8ff0\u6709\u8be6\u7ec6\u7684\u5b98\u65b9\u8bf4\u660e\u3002<br \/>\n\u540c\u65f6\uff0c\u622a\u81f32021\u5e7411\u670823\u65e5\uff0c\u6211\u4eec\u6b63\u5728\u4f7f\u7528Go-1.17\u8fdb\u884c\u6d4b\u8bd5\u3002<\/p>\n<h1>\u9879\u76ee\u7684\u5f00\u59cb<\/h1>\n<p>\u6211\u5c06\u4f7f\u7528GraphQL\u6846\u67b6gqlgen\u5f00\u59cb\u6784\u5efaGraphQL\u670d\u52a1\u5668\u3002<\/p>\n<h2>\u521d\u59cb\u5316<\/h2>\n<p>\u6211\u5011\u6703\u6309\u9806\u5e8f\u57f7\u884c\u547d\u4ee4\uff0c\u5728\u65b0\u7684\u5009\u5eab\u4e2d\u521d\u59cb\u5316\u4e00\u500bGo\u8a9e\u8a00\u9805\u76ee\u4e26\u5f15\u5165GraphQL\u6846\u67b6gqlgen\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>go mod init\r\n<span class=\"nv\">$ <\/span>go get github.com\/99designs\/gqlgen\r\n<span class=\"nv\">$ <\/span>go run github.com\/99designs\/gqlgen init\r\n<\/code><\/pre>\n<p>\u901a\u8fc7\u8fd9\u4e2a\uff0c\u4e0b\u9762\u7684\u6587\u4ef6\u7ec4\u88ab\u521b\u5efa\u4e86\u3002<\/p>\n<pre class=\"post-pre\"><code>\u251c\u2500\u2500 gqlgen.yml: \u30b3\u30fc\u30c9\u81ea\u52d5\u751f\u6210\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\r\n\u251c\u2500\u2500 graph\r\n\u2502\u00a0\u00a0 \u251c\u2500\u2500 generated\r\n\u2502\u00a0\u00a0 \u2502\u00a0\u00a0 \u2514\u2500\u2500 generated.go \/\/ \u7de8\u96c6\u3057\u306a\u3044\u30d5\u30a1\u30a4\u30eb\r\n\u2502\u00a0\u00a0 \u251c\u2500\u2500 model\r\n\u2502\u00a0\u00a0 \u2502\u00a0\u00a0 \u2514\u2500\u2500 models_gen.go \/\/ GraphQL\u3067\u4f7f\u3046\u578b\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u30d5\u30a1\u30a4\u30eb\r\n\u2502\u00a0\u00a0 \u251c\u2500\u2500 resolver.go \/\/ \u30ea\u30be\u30eb\u30d0\u306e\u5b9a\u7fa9\r\n\u2502\u00a0\u00a0 \u251c\u2500\u2500 schema.graphqls \/\/ GraphQL\u306e\u30b9\u30ad\u30fc\u30de\u5b9a\u7fa9\u30d5\u30a1\u30a4\u30eb\r\n\u2502\u00a0\u00a0 \u2514\u2500\u2500 schema.resolvers.go \/\/ \u5b9f\u969b\u306e\u51e6\u7406\u3092\u66f8\u304f\u30d5\u30a1\u30a4\u30eb\r\n\u2514\u2500\u2500 server.go \/\/ HTTP\u30b5\u30fc\u30d0\u306e\u8d77\u52d5\u30d7\u30ed\u30b0\u30e9\u30e0\r\n<\/code><\/pre>\n<p>\u5373\u4f7f\u5728\u8fd9\u4e2a\u9636\u6bb5\uff0c\u53ea\u8981\u6267\u884c\u4ee5\u4e0b\u64cd\u4f5c\uff0c\u5c31\u53ef\u4ee5\u5728 http:\/\/localhost:8080\/ \u6253\u5f00\u8349\u7a3f\u573a\u754c\u9762\u3002<\/p>\n<pre class=\"post-pre\"><code>$ go mod tidy\r\n$ go run .\/server.go\r\n<\/code><\/pre>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d8435913a08637a6b572a\/20-0.png\" alt=\"image.png\" \/><\/div>\n<p>\u6211\u5df2\u5728\u8fd9\u91cc\u90e8\u7f72\u4e86\u6b64\u5185\u5bb9\u3002<br \/>\nhttps:\/\/github.com\/hiroyky\/go_graphql_server_sample\/pull\/1<\/p>\n<h2>GraphQL\u670d\u52a1\u5668\u5f00\u53d1\u7684\u6d41\u7a0b<\/h2>\n<p>\u521a\u624d\u7684\u81ea\u52a8\u751f\u6210\u4e2d\uff0c\u4ee5\u4e0b3\u4e2a\u6587\u4ef6\u4e5f\u5df2\u7ecf\u5b9e\u65bd\uff0c\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n<p>schema.graphqls\u306bTODO\u30ea\u30b9\u30c8\u3092\u6a21\u3057\u305f\u30b9\u30ad\u30fc\u30de\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>model\/model_gen.go\u306bGo\u8a00\u8a9e\u3067\u305d\u306e\u578b\u5b9a\u7fa9\u304c\u8a18\u8ff0\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>schema.resolvers.go\u306b\u51e6\u7406\u3092\u5b9f\u88c5\u3059\u308b\u305f\u3081\u306e\u96db\u5f62\u304c\u8a18\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u521b\u5efa\u7a0b\u5e8f\u7684\u6b65\u9aa4\u5982\u4e0b\uff1a<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>1. \u5728.graphqls\u6587\u4ef6\u4e2d\u7f16\u5199GraphQL\u7684\u6a21\u5f0f\u5b9a\u4e49\u3002<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u6267\u884cgqlgen\u81ea\u52a8\u751f\u6210\u547d\u4ee4(gqlgen)\u3002<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u68c0\u67e5\u5df2\u521b\u5efa\/\u66f4\u65b0\u7684model\/model_go.go\u6587\u4ef6\uff0c\u5e76\u6839\u636e\u9700\u8981\u5c06\u5176\u79fb\u52a8\u548c\u7f16\u8f91\u5230\u5176\u4ed6\u6587\u4ef6\u4e2d\u3002<\/ol>\n<\/li>\n<\/ol>\n<p>2. \u5728.resolvers.go\u6587\u4ef6\u4e2d\u5b9e\u73b0\u5904\u7406\u4f53\u3002<\/p>\n<p>*.graphqls\u6587\u4ef6\u548c*.resolvers.go\u6587\u4ef6\u662f\u4e00\u5bf9\u7684\u3002<\/p>\n<h2>GraphQL\u7684\u6a21\u5f0f\u5b9a\u4e49\uff08\u590d\u4e60\uff09<\/h2>\n<p>GraphQL\u7684\u6a21\u5f0f\u5b9a\u4e49\u5305\u62ec\u6570\u636e\u7c7b\u578b\u5b9a\u4e49\u548c\u51fd\u6570\uff08\u65b9\u6cd5\uff09\u5b9a\u4e49\u3002\u4e24\u8005\u7684\u5b9a\u4e49\u65b9\u5f0f\u4e0eGo\u8bed\u8a00\u548c\u5176\u4ed6\u8bed\u8a00\u7684\u7ed3\u6784\u4f53\u548c\u7c7b\u7684\u5b9a\u4e49\u76f8\u540c\u3002<\/p>\n<p>\u5728\u7c7b\u578b\u5b9a\u4e49\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u786e\u5b9a\u7ed3\u6784\u4f53\u7684\u540d\u79f0\uff0c\u7136\u540e\u5b9a\u4e49\u5176\u5185\u90e8\u7684\u5b57\u6bb5\u3002\u4f5c\u4e3a\u5b57\u6bb5\u7c7b\u578b\u7684\u57fa\u672c\u5f62\u5f0f\uff0c\u6211\u4eec\u63d0\u4f9b\u4e86String\u3001Int\u548cBoolean\u3002\u6b64\u5916\uff0c\u8fd8\u63d0\u4f9b\u4e86\u8868\u793a\u4e3b\u952e\u7684ID\u3001\u679a\u4e3e\u5bf9\u3001\u63a5\u53e3\u4ee5\u53ca\u81ea\u5b9a\u4e49\u7c7b\u578b\u5b9a\u4e49\u7684\u673a\u5236\u3002<\/p>\n<p>\u63a5\u53e3\u7528\u4e8e\u5b9a\u4e49\u5171\u4eab\u5b57\u6bb5\u3002\u5b9e\u73b0\u4e86\u63a5\u53e3\u7684\u7c7b\u578b\u5fc5\u987b\u5177\u5907\u8be5\u5b57\u6bb5\u3002\u53ef\u4ee5\u8bf4\uff0c\u63a5\u53e3\u5728\u7f16\u7a0b\u8bed\u8a00\u4e2d\u4e0e\u5b9e\u9645\u76f8\u5f53\u3002<\/p>\n<p>\u51fd\u6570\uff08\u65b9\u6cd5\uff09\u7684\u5b9a\u4e49\u53ef\u4ee5\u5206\u4e3a\u4e24\u90e8\u5206\uff1a\u67e5\u8be2\uff08query\uff09\u7528\u4e8e\u5b9a\u4e49\u83b7\u53d6\u6570\u636e\u7684\u51fd\u6570\uff0c\u800c\u53d8\u66f4\uff08mutation\uff09\u7528\u4e8e\u5b9a\u4e49\u66f4\u65b0\u6570\u636e\u7684\u51fd\u6570\u3002\u4e24\u8005\u90fd\u9700\u8981\u5b9a\u4e49\u51fd\u6570\u540d\u3001\u53c2\u6570\u548c\u8fd4\u56de\u503c\u3002<\/p>\n<p>\u516c\u5f0f\u8bf4\u660e&#8221;\u6a21\u5f0f\u548c\u7c7b\u578b&#8221;<\/p>\n<h2>\u6a21\u5f0f\u5b9a\u4e49\u548c\u4ee3\u7801\u751f\u6210<\/h2>\n<h3>&#8220;\u4ee5\u516c\u53f8\u3001\u90e8\u95e8\u548c\u5458\u5de5\u4e3a\u4e3b\u9898\u8bbe\u8ba1&#8221; (Y\u01d0 , h\u00e9<\/h3>\n<p>\u6211\u4eec\u53ef\u4ee5\u8003\u8651\u4ee5\u81ea\u52a8\u751f\u6210\u7684TODO\u6e05\u5355\u6a21\u5f0f\u4e3a\u9898\u6750\uff0c\u4f46\u5728\u8fd9\u91cc\uff0c\u6211\u60f3\u7528\u516c\u53f8\uff08company\uff09\u548c\u90e8\u95e8\uff08department\uff09\uff0c\u4ee5\u53ca\u804c\u5458\uff08employee\uff09\u8fd9\u4e2a\u5e38\u89c1\u7684\u9898\u6750\u6765\u601d\u8003\u3002\u5982\u679c\u7528MySQL\u6570\u636e\u5e93\u8868\u7684ER\u56fe\u6765\u8868\u793a\u9898\u6750\u7684\u8bdd\uff0c\u5982\u4e0b\u6240\u793a\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u4e0d\u6d89\u53ca\u4e0e\u540e\u7aef\u6570\u636e\u5e93\u7684\u4ea4\u4e92\uff0c\u4f46\u5047\u8bbe\u6211\u4eec\u6b63\u5728\u4f7f\u7528MySQL\u8fdb\u884c\u8ba8\u8bba\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d8435913a08637a6b572a\/36-0.png\" alt=\"image.png\" \/><\/div>\n<p>\u5220\u9664graph\/model\/schema.graphqls\u548cgraph\/model\/scheme.resolvers.go\uff0c\u5e76\u65b0\u5efa\u4e00\u4e2a\u65b0\u7684\u6a21\u5f0f\u5b9a\u4e49\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span><span class=\"nb\">rm<\/span> .\/graph\/model\/schema.graphqls\r\n<span class=\"nv\">$ <\/span><span class=\"nb\">rm<\/span> .\/graph\/model\/schema.resovers.go\r\n<\/code><\/pre>\n<h3>\u5b9a\u4e491\u4e2a\u57fa\u672c\u7684\u67b6\u6784<\/h3>\n<p>\u7531\u4e8e\u6211\u4eec\u662f\u521a\u5f00\u59cb\uff0c\u6240\u4ee5\u8ba9\u6211\u4eec\u6309\u7167\u57fa\u672c\u7684\u7c7b\u578b\u5b9a\u4e49\u90e8\u5206\u7684\u987a\u5e8f\u8fdb\u884c\u3002\u6240\u6709\u8fd9\u4e9b\u90fd\u5c06\u653e\u7f6e\u5728graph\/\u76ee\u5f55\u4e0b\u3002<\/p>\n<p>\u6700\u521d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u5728\u6574\u4e2a\u7cfb\u7edf\u4e2d\u5171\u4eab\u7684\u63a5\u53e3Node\u3002\u6309\u7167\u60ef\u4f8b\uff0c\u5177\u6709\u4e3b\u952eid\u7684\u7c7b\u578b\u5e94\u8be5\u5b9e\u73b0Node\u63a5\u53e3\u3002\u6211\u4eec\u8fd8\u5b9a\u4e49\u4e86\u4e00\u4e2a\u81ea\u5b9a\u4e49\u7c7b\u578bTimestamp\u3002\u7c7b\u578b\u672b\u5c3e\u7684\u611f\u53f9\u53f7\u8868\u793a\u5b83\u662f\u5fc5\u9700\u7684\uff08\u4e0d\u5141\u8bb8\u7a7a\u503c\uff09\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">interface<\/span> <span class=\"n\">Node<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"nb\">ID<\/span><span class=\"p\">!<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">scalar<\/span> <span class=\"n\">Timestamp<\/span>\r\n<\/code><\/pre>\n<p>\u90a3\u4e48\u8ba9\u6211\u4eec\u7acb\u523b\u5f00\u59cb\u5b9a\u4e49Interface Node\u7684\u5b9e\u73b0\uff0c\u5176\u4e2d\u5305\u62ecCompany\uff08\u516c\u53f8\uff09\uff0cDepartment\uff08\u90e8\u95e8\uff09\u548cEmployee\uff08\u5458\u5de5\uff09\u7684\u7c7b\u578b\u3002\u5728Employee\u4e2d\uff0c\u6211\u4eec\u8fd8\u5b9a\u4e49\u4e86Gender\u8fd9\u4e2a\u679a\u4e3e\u7c7b\u578b\u3002\uff08\u5c3d\u7ba1\u6700\u8fd1\u5bf9\u4e8e\u6027\u522b\uff0c\u6709\u4eba\u63d0\u51fa\u4e86\u9664\u4e86\u7537\u6027\u548c\u5973\u6027\u4e4b\u5916\u7684\u66f4\u591a\u9009\u62e9\uff0c\u4f46\u5728\u8fd9\u91cc\u6211\u4eec\u5148\u4e0d\u8003\u8651\uff09\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">type<\/span> <span class=\"n\">Company<\/span> <span class=\"k\">implements<\/span> <span class=\"n\">Node<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"nb\">ID<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">companyName<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">representative<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">phoneNumber<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"k\">type<\/span> <span class=\"n\">Department<\/span> <span class=\"k\">implements<\/span> <span class=\"n\">Node<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"nb\">ID<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">departmentName<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">email<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"k\">type<\/span> <span class=\"n\">Employee<\/span> <span class=\"k\">implements<\/span> <span class=\"n\">Node<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"nb\">ID<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">name<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">gender<\/span><span class=\"p\">:<\/span> <span class=\"n\">Gender<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">email<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">latestLoginAt<\/span><span class=\"p\">:<\/span> <span class=\"n\">Timestamp<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"err\">\"\"\"<\/span> <span class=\"err\">\u6276\u990a\u5bb6\u65cf\u306e\u4eba\u6570<\/span> <span class=\"err\">\"\"\"<\/span>\r\n    <span class=\"n\">dependentsNum<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Int<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"err\">\"\"\"<\/span> <span class=\"err\">\u7ba1\u7406\u8077\u304b\u3069\u3046\u304b<\/span> <span class=\"err\">\"\"\"<\/span>\r\n    <span class=\"n\">isManager<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Boolean<\/span><span class=\"p\">!<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">enum<\/span> <span class=\"n\">Gender<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">Male<\/span>\r\n    <span class=\"n\">Female<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u5728Go\u8bed\u8a00\u548c\u5176\u4ed6\u8bed\u8a00\u4e2d\uff0c\u5b9a\u4e49\u6210\u5458\u53d8\u91cf\u7684\u7ed3\u6784\u548c\u7c7b\u51e0\u4e4e\u662f\u76f8\u540c\u7684\u3002<\/p>\n<h3>\u5b9a\u4e49\u4e0e\u5176\u4ed6\u7c7b\u578b\u5173\u8054\u76842\u4e2a\u67b6\u6784<\/h3>\n<p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u6765\u8fdb\u4e00\u6b65\u5c06\u7c7b\u578b\u4e4b\u95f4\u7684\u5173\u8054\u4e5f\u7eb3\u5165\u5b9a\u4e49\u4e2d\u3002\u5728GraphQL\u7684\u7c7b\u578b\u5b9a\u4e49\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4e3a\u5173\u7cfb\u6570\u636e\u5e93\u4e2d\u7684\u5173\u7cfb\u6dfb\u52a0\u5173\u8054\u3002<\/p>\n<p>\u9996\u5148\uff0c\u6211\u5011\u5f9e\u54e1\u5de5(Employee)\u958b\u59cb\u9032\u884c\u7de8\u8f2f\u3002\u6dfb\u52a0\u90e8\u9580(department)\u548c\u516c\u53f8(company)\u6b04\u4f4d\u3002\u9019\u6a23\u5c31\u53ef\u4ee5\u8ffd\u8e64\u54e1\u5de5(Employee)\u6240\u5c6c\u7684\u90e8\u9580(Department)\u548c\u516c\u53f8(Company)\u3002\u5c0d\u4e86\uff0c\u8cc7\u6599\u5eab\u7684\u5be6\u9ad4\u95dc\u4fc2\u5716(ER diagram)\u4e2d\u6709\u90e8\u9580\u7de8\u865f(department_id)\u548c\u516c\u53f8\u7de8\u865f(company_id)\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">type<\/span> <span class=\"n\">Employee<\/span> <span class=\"k\">implements<\/span> <span class=\"n\">Node<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"nb\">ID<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">name<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">gender<\/span><span class=\"p\">:<\/span> <span class=\"n\">Gender<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">email<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">latestLoginAt<\/span><span class=\"p\">:<\/span> <span class=\"n\">Timestamp<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"err\">\"\"\"<\/span> <span class=\"err\">\u6276\u990a\u5bb6\u65cf\u306e\u4eba\u6570<\/span> <span class=\"err\">\"\"\"<\/span>\r\n    <span class=\"n\">dependentsNum<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Int<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"err\">\"\"\"<\/span> <span class=\"err\">\u7ba1\u7406\u8077\u304b\u3069\u3046\u304b<\/span> <span class=\"err\">\"\"\"<\/span>\r\n    <span class=\"n\">isManager<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Boolean<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">department<\/span><span class=\"p\">:<\/span> <span class=\"n\">Department<\/span><span class=\"p\">!<\/span> <span class=\"c\"># \u8ffd\u8a18<\/span>\r\n    <span class=\"n\">company<\/span><span class=\"p\">:<\/span> <span class=\"n\">Company<\/span><span class=\"p\">!<\/span>       <span class=\"c\"># \u8ffd\u8a18<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">enum<\/span> <span class=\"n\">Gender<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">Male<\/span>\r\n    <span class=\"n\">Female<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h3>\u5b9a\u4e493 [\u5206\u9875] \u7684\u6a21\u5f0f<\/h3>\n<p>\u63a5\u4e0b\u6765\uff0c\u6211\u6253\u7b97\u5728Department\u548cCompany\u4e2d\u6dfb\u52a0\u4e0e\u5173\u8054\u8868\u76f8\u5173\u7684\u94fe\u63a5\u3002\u4eceCompany\u5230Department\u548cEmployee\u662f\u4e00\u5bf9\u591a\u7684\u5173\u7cfb\uff0c\u56e0\u6b64\u6211\u4eec\u5c06\u4f7f\u7528\u6570\u7ec4\u6765\u8fd4\u56de\u503c\u3002\u7136\u800c\uff0c\u4e0d\u80fd\u6bcf\u6b21\u90fd\u5c06\u6240\u6709\u6570\u636e\u4e00\u6b21\u6027\u8fd4\u56de\u4f5c\u4e3aAPI\uff0c\u6240\u4ee5\u6211\u4eec\u8981\u5b9a\u4e49\u5206\u9875\u529f\u80fd\u3002\uff08\u5982\u679c\u8bbe\u8ba1\u6210\u4e00\u6b21\u6027\u8fd4\u56de\u6240\u6709\u6570\u636e\u7684\u8bdd\uff0c\u6570\u636e\u5e93\u4f1a\u56e0\u4e3a\u8d1f\u8f7d\u800c\u5d29\u6e83\u7684\uff0c\u8bf7\u6ce8\u610f\u3002\uff09<\/p>\n<p>\u8fd9\u6b21\u6211\u4eec\u5c06\u91c7\u7528\u5e38\u89c1\u7684Limit\u548cOffset\u65b9\u5f0f\u8fdb\u884c\u5206\u9875\u3002\u5728\u8bb8\u591a\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u901a\u8fc7limit\u548coffset\u6765\u6307\u5b9a\u83b7\u53d6\u7684\u6570\u636e\u91cf\u548c\u4f4d\u7f6e\uff0c\u4e0e\u6b64\u7c7b\u4f3c\u3002\u867d\u7136GraphQL\u5728\u4e00\u4e9b\u60c5\u51b5\u4e0b\u4e5f\u91c7\u7528\u57fa\u4e8e\u6e38\u6807\u7684\u5206\u9875\u65b9\u5f0f\uff0c\u4f46\u672c\u6b21\u4e0d\u4f1a\u4f7f\u7528\u3002<\/p>\n<div>\u4ee5\u4e2a\u4eba\u89d2\u5ea6\u800c\u8a00\uff0c\u6211\u8ba4\u4e3a\u6e38\u6807\u5f0f\u5206\u9875\u9002\u7528\u4e8e\u7c7b\u4f3cTwitter\u548cFacebook\u65f6\u95f4\u7ebf\u8fd9\u6837\u4e0d\u65ad\u63d2\u5165\u8bb0\u5f55\u7684\u6570\u636e\uff0c\u4f46\u5bf9\u4e8e\u5176\u4ed6\u7c7b\u578b\u7684\u6570\u636e\uff0c\u6211\u4eec\u5e94\u8be5\u8003\u8651\u91c7\u7528\u57fa\u4e8eLimit\u548cOffset\u7684\u5206\u9875\uff0c\u800c\u4e0d\u662f\u5f3a\u5236\u91c7\u7528\u6e38\u6807\u5f0f\u5206\u9875\u3002\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u7531\u4e8e\u516c\u53f8\u548c\u5458\u5de5\u540d\u5355\u5e76\u975e\u65f6\u523b\u53d8\u5316\u7684\u6570\u636e\uff0c\u6211\u8ba4\u4e3a\u91c7\u7528\u57fa\u4e8eLimit\u548cOffset\u7684\u5206\u9875\u66f4\u52a0\u5408\u9002\u3002<\/div>\n<p>\u5728\u51c6\u5907\u5206\u9875\u5b9a\u4e49\u65f6\uff0c\u5c06\u4ee5\u4e0b\u5185\u5bb9\u6dfb\u52a0\u5230common.graphqls\u4e2d\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">interface<\/span> <span class=\"n\">Pagination<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">pageInfo<\/span><span class=\"p\">:<\/span> <span class=\"n\">PaginationInfo<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">nodes<\/span><span class=\"p\">:<\/span> <span class=\"p\">[<\/span><span class=\"n\">Node<\/span><span class=\"p\">!]!<\/span> <span class=\"c\"># Node\u578b\u306e\u914d\u5217\u3068\u3044\u3046\u610f\u5473<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">PaginationInfo<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">page<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Int<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">paginationLength<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Int<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">hasNextPage<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Boolean<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">hasPreviousPage<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Boolean<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">count<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Int<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">totalCount<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Int<\/span><span class=\"p\">!<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u90a3\u4e48\uff0c\u6211\u4eec\u5c06\u4e3a\u90e8\u95e8\u6dfb\u52a0\u5173\u8054\u3002\u5728EmployeePagination\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u5b57\u6bb5\u540dnodes\u6765\u5b9a\u4e49\u9875\u7801\u4fe1\u606f\u548cEmployee\u6570\u7ec4\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c\"># \u4e0b\u8a18\u3092\u8ffd\u8a18<\/span>\r\n<span class=\"k\">type<\/span> <span class=\"n\">EmployeePagination<\/span> <span class=\"k\">implements<\/span> <span class=\"n\">Pagination<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">pageInfo<\/span><span class=\"p\">:<\/span> <span class=\"n\">PaginationInfo<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">nodes<\/span><span class=\"p\">:<\/span> <span class=\"p\">[<\/span><span class=\"n\">Employee<\/span><span class=\"p\">!]!<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"k\">type<\/span> <span class=\"n\">Department<\/span> <span class=\"k\">implements<\/span> <span class=\"n\">Node<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"nb\">ID<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">departmentName<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">email<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">company<\/span><span class=\"p\">:<\/span> <span class=\"n\">Company<\/span><span class=\"p\">!<\/span>              <span class=\"c\"># \u8ffd\u8a18<\/span>\r\n    <span class=\"n\">employees<\/span><span class=\"p\">:<\/span> <span class=\"n\">EmployeePagination<\/span><span class=\"p\">!<\/span> <span class=\"c\"># \u8ffd\u8a18<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u540c\u6837\uff0c\u6211\u4f1a\u4e3a\u516c\u53f8\u6dfb\u52a0\u76f8\u5173\u7684\u94fe\u63a5\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c\"># \u4e0b\u8a18\u3092\u8ffd\u8a18<\/span>\r\n<span class=\"k\">type<\/span> <span class=\"n\">DepartmentPagination<\/span> <span class=\"k\">implements<\/span> <span class=\"n\">Pagination<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">pageInfo<\/span><span class=\"p\">:<\/span> <span class=\"n\">PaginationInfo<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">nodes<\/span><span class=\"p\">:<\/span> <span class=\"p\">[<\/span><span class=\"n\">Department<\/span><span class=\"p\">!]!<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"k\">type<\/span> <span class=\"n\">Company<\/span> <span class=\"k\">implements<\/span> <span class=\"n\">Node<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"nb\">ID<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">companyName<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">representative<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">phoneNumber<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">departments<\/span><span class=\"p\">:<\/span> <span class=\"n\">DepartmentPagination<\/span><span class=\"p\">!<\/span> <span class=\"c\"># \u8ffd\u8a18<\/span>\r\n    <span class=\"n\">employees<\/span><span class=\"p\">:<\/span> <span class=\"n\">EmployeePagination<\/span><span class=\"p\">!<\/span>     <span class=\"c\"># \u8ffd\u8a18<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"c\"># \u5f8c\u307b\u3069\u4f7f\u3046\u306e\u3067\u4f75\u305b\u3066\u5b9a\u7fa9<\/span>\r\n<span class=\"k\">type<\/span> <span class=\"n\">CompanyPagination<\/span> <span class=\"k\">implements<\/span> <span class=\"n\">Pagination<\/span><span class=\"p\">{<\/span>\r\n    <span class=\"n\">pageInfo<\/span><span class=\"p\">:<\/span> <span class=\"n\">PaginationInfo<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">nodes<\/span><span class=\"p\">:<\/span> <span class=\"p\">[<\/span><span class=\"n\">Company<\/span><span class=\"p\">!]!<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h3>\u5b9a\u4e494\u4e2a[\u67e5\u8be2\u548c\u53d8\u66f4]\u6a21\u5f0f<\/h3>\n<p>\u5230\u76ee\u524d\u4e3a\u6b62\uff0c\u6211\u4eec\u53ea\u662f\u5728\u8fdb\u884c\u7c7b\u578b\u5b9a\u4e49\uff0c\u73b0\u5728\u8981\u5f00\u59cb\u5b9a\u4e49\u51fd\u6570\uff08\u65b9\u6cd5\uff09\u3002\u6211\u4eec\u5c06\u5b9a\u4e49\u4e00\u4e2a\u83b7\u53d6\u67e5\u8be2\u7c7b\uff08query\uff09\u548c\u4e00\u4e2a\u66f4\u65b0\u7c7b\uff08mutation\uff09\u3002\u8fd9\u4e9b\u9700\u8981\u5206\u522b\u7528Query\u548cMutation\u6765\u5305\u88c5\u3002\u51fd\u6570\u7684\u5b9a\u4e49\u65b9\u6cd5\u4e0e\u5e38\u89c1\u7684\u7f16\u7a0b\u8bed\u8a00\u76f8\u4f3c\uff0c\u6240\u4ee5\u5e94\u8be5\u80fd\u591f\u76f4\u89c2\u5730\u7406\u89e3\u3002\u5982\u679c\u53c2\u6570\u4e0a\u6709\u4e00\u4e2a\u611f\u53f9\u53f7\uff08!\uff09\uff0c\u8868\u793a\u5b83\u662f\u5fc5\u9700\u7684\uff1b\u5982\u679c\u8fd4\u56de\u503c\u4e0a\u6709\u4e00\u4e2a\u611f\u53f9\u53f7\uff08!\uff09\uff0c\u8868\u793a\u4fdd\u8bc1\u54cd\u5e94\u4e0d\u4f1a\u4e3aNULL\u3002<\/p>\n<pre class=\"post-pre\"><code>\u95a2\u6570\u540d(\u5f15\u65701: \u5f15\u6570\u306e\u578b1!, \u5f15\u65702: \u5f15\u6570\u306e\u578b2..): \u623b\u308a\u5024\u306e\u578b\r\n<\/code><\/pre>\n<p>\u5728\u67e5\u8be2\u4e2d\uff0c\u4e3a\u6bcf\u79cd\u7c7b\u578b\u5b9a\u4e49\u4e86\u5355\u6570\u548c\u590d\u6570\u7684\u83b7\u53d6\u51fd\u6570\u3002\u8fd9\u4e9b\u51fd\u6570\u90fd\u53ef\u4ee5\u901a\u8fc7limit\u548coffset\u53c2\u6570\u6765\u6307\u5b9a\u83b7\u53d6\u7684\u6570\u91cf\u548c\u4f4d\u7f6e\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0climit\u662f\u5fc5\u9700\u7684\u3002\u5728employees\u4e2d\uff0c\u8fd8\u5b9a\u4e49\u4e86\u5176\u4ed6\u7b5b\u9009\u6761\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">type<\/span> <span class=\"n\">Query<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">company<\/span><span class=\"p\">(<\/span><span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"nb\">ID<\/span><span class=\"p\">!):<\/span> <span class=\"n\">Company<\/span>\r\n    <span class=\"n\">companies<\/span><span class=\"p\">(<\/span><span class=\"n\">limit<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Int<\/span><span class=\"p\">!,<\/span> <span class=\"n\">offset<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Int<\/span><span class=\"p\">):<\/span> <span class=\"n\">CompanyPagination<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">department<\/span><span class=\"p\">(<\/span><span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"nb\">ID<\/span><span class=\"p\">!):<\/span> <span class=\"n\">Department<\/span>\r\n    <span class=\"n\">departments<\/span><span class=\"p\">(<\/span><span class=\"n\">limit<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Int<\/span><span class=\"p\">!,<\/span> <span class=\"n\">offset<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Int<\/span><span class=\"p\">):<\/span> <span class=\"n\">DepartmentPagination<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">employee<\/span><span class=\"p\">(<\/span><span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"nb\">ID<\/span><span class=\"p\">!):<\/span> <span class=\"n\">Employee<\/span>\r\n    <span class=\"n\">employees<\/span><span class=\"p\">(<\/span>\r\n        <span class=\"n\">limit<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Int<\/span><span class=\"p\">!,<\/span>\r\n        <span class=\"n\">offset<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Int<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"n\">email<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span>\r\n        <span class=\"n\">gender<\/span><span class=\"p\">:<\/span> <span class=\"n\">Gender<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"n\">isManager<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Boolean<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"n\">hasDependent<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Boolean<\/span>\r\n    <span class=\"p\">):<\/span> <span class=\"n\">EmployeePagination<\/span><span class=\"p\">!<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u5c06\u66f4\u65b0\u7cfb\u7684\u53d8\u5f02\u5b9a\u4e49\u5728mutation.graphqls\u4e2d\u3002\u53d8\u5f02\u7684\u53c2\u6570\u662f\u4f5c\u4e3ainput\u6574\u5408\u7684\u3002\u53c2\u6570\u7684\u7c7b\u578b\u5b9a\u4e49\u662f\u7528input Xxxx {}\u6765\u63cf\u8ff0\uff0c\u800c\u4e0d\u662f\u7528type\u3002\u8fd4\u56de\u503c\u7684\u5b9a\u4e49\u662f\uff0c\u5982\u679c\u521b\u5efa\u6216\u66f4\u65b0\u6210\u529f\uff0c\u5219\u8fd4\u56de\u65b0\u7684\u503c\uff1b\u5982\u679c\u5220\u9664\u64cd\u4f5c\uff0c\u5219\u8fd4\u56de\u4e00\u4e2a\u56fa\u5b9a\u7684true\u503c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">type<\/span> <span class=\"n\">Mutation<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">createCompany<\/span><span class=\"p\">(<\/span><span class=\"n\">input<\/span><span class=\"p\">:<\/span> <span class=\"n\">CreateCompanyInput<\/span><span class=\"p\">!):<\/span> <span class=\"n\">Company<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">updateCompany<\/span><span class=\"p\">(<\/span><span class=\"n\">input<\/span><span class=\"p\">:<\/span> <span class=\"n\">UpdateCompanyInput<\/span><span class=\"p\">!):<\/span> <span class=\"n\">Company<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">deleteCompany<\/span><span class=\"p\">(<\/span><span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"nb\">ID<\/span><span class=\"p\">!):<\/span> <span class=\"nb\">Boolean<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">createDepartment<\/span><span class=\"p\">(<\/span><span class=\"n\">input<\/span><span class=\"p\">:<\/span> <span class=\"n\">CreateDepartmentInput<\/span><span class=\"p\">!):<\/span> <span class=\"n\">Department<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">updateDepartment<\/span><span class=\"p\">(<\/span><span class=\"n\">input<\/span><span class=\"p\">:<\/span> <span class=\"n\">UpdateDepartmentInput<\/span><span class=\"p\">!):<\/span> <span class=\"n\">Department<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">deleteDepartment<\/span><span class=\"p\">(<\/span><span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"nb\">ID<\/span><span class=\"p\">!):<\/span> <span class=\"nb\">Boolean<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">createEmployee<\/span><span class=\"p\">(<\/span><span class=\"n\">input<\/span><span class=\"p\">:<\/span> <span class=\"n\">CreateEmployeeInput<\/span><span class=\"p\">!):<\/span> <span class=\"n\">Employee<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">updateEmployee<\/span><span class=\"p\">(<\/span><span class=\"n\">input<\/span><span class=\"p\">:<\/span> <span class=\"n\">UpdateEmployeeInput<\/span><span class=\"p\">!):<\/span> <span class=\"n\">Employee<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">deleteEmployee<\/span><span class=\"p\">(<\/span><span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"nb\">ID<\/span><span class=\"p\">!):<\/span> <span class=\"nb\">Boolean<\/span><span class=\"p\">!<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">input<\/span> <span class=\"n\">CreateCompanyInput<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">companyName<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">representative<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">phoneNumber<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">input<\/span> <span class=\"n\">UpdateCompanyInput<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"nb\">ID<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">companyName<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span>\r\n    <span class=\"n\">representative<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span>\r\n    <span class=\"n\">phoneNumber<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">input<\/span> <span class=\"n\">CreateDepartmentInput<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">departmentName<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">email<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">input<\/span> <span class=\"n\">UpdateDepartmentInput<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"nb\">ID<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">departmentName<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span>\r\n    <span class=\"n\">email<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">input<\/span> <span class=\"n\">CreateEmployeeInput<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">name<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">gender<\/span><span class=\"p\">:<\/span> <span class=\"n\">Gender<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">email<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">dependentsNum<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Int<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">isManager<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Boolean<\/span><span class=\"p\">!<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">input<\/span> <span class=\"n\">UpdateEmployeeInput<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"nb\">ID<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">name<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span>\r\n    <span class=\"n\">gender<\/span><span class=\"p\">:<\/span> <span class=\"n\">Gender<\/span>\r\n    <span class=\"n\">email<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span>\r\n    <span class=\"n\">dependentsNum<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Int<\/span>\r\n    <span class=\"n\">isManager<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Boolean<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u6211\u5df2\u5c06\u5230\u76ee\u524d\u4e3a\u6b62\u7684\u66f4\u65b0\u6574\u7406\u5230\u4e86Github\u7684Pull Request\u4e2d\u3002\u5206\u652f\u540d\u79f0\u662ffeat2\u3002<br \/>\n\u94fe\u63a5\uff1ahttps:\/\/github.com\/hiroyky\/go_graphql_server_sample\/pull\/2\/files<\/p>\n<h2>\u4ee3\u7801\u751f\u6210<\/h2>\n<h3>\u6267\u884c\u4ee3\u7801\u751f\u62101 [\u4f7f\u7528gqlgen]<\/h3>\n<p>\u4e00\u65e6\u5b8c\u6210\u4e86\u6a21\u5f0f\u5b9a\u4e49\uff0c\u53ef\u4ee5\u4f7f\u7528gqlgen\u547d\u4ee4\u6839\u636e\u6a21\u5f0f\u5b9a\u4e49\u81ea\u52a8\u751f\u6210Go\u8bed\u8a00\u7a0b\u5e8f\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>go run github.com\/99designs\/gqlgen\r\n<\/code><\/pre>\n<p>\u6211\u8ba4\u4e3aGo\u8bed\u8a00\u7684\u6587\u4ef6\u5df2\u6309\u4ee5\u4e0b\u65b9\u5f0f\u7ed3\u6784\u5316\u751f\u6210\u3002<\/p>\n<pre class=\"post-pre\"><code>.\/graph\r\n\u251c\u2500\u2500 generated\r\n\u2502\u00a0\u00a0 \u2514\u2500\u2500 generated.go\r\n\u251c\u2500\u2500 model\r\n\u2502\u00a0\u00a0 \u2514\u2500\u2500 models_gen.go\r\n\u251c\u2500\u2500 mutations.resolvers.go\r\n\u251c\u2500\u2500 query.resolvers.go\r\n\u2514\u2500\u2500 resolver.go\r\n<\/code><\/pre>\n<p>\u8bf7\u95ee\u5728query.resolvers.go\u548cmutations.resolvers.go\u6587\u4ef6\u4e2d\uff0c\u6211\u4eec\u5df2\u7ecf\u7528Go\u8bed\u8a00\u5b9a\u4e49\u4e86\u4e4b\u524d\u63d0\u5230\u7684\u51fd\u6570\u3002<br \/>\n\u5728\u53c2\u6570\u5b9a\u4e49\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528!\u6765\u5c06\u53c2\u6570\u6807\u8bb0\u4e3a\u5fc5\u9700\u7684\u503c\u7c7b\u578b\uff0c\u800c\u975e\u5fc5\u9700\u7684\u53c2\u6570\u5219\u91c7\u7528\u4e86\u6307\u9488\u7c7b\u578b\u3002\u5982\u679c\u672a\u6307\u5b9a\u53c2\u6570\uff0c\u5219\u5176\u503c\u5c06\u4e3aNULL\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c\">\/\/ \u30fb\u30fb\u30fb\u30fb<\/span>\r\n<span class=\"k\">func<\/span> <span class=\"p\">(<\/span><span class=\"n\">r<\/span> <span class=\"o\">*<\/span><span class=\"n\">queryResolver<\/span><span class=\"p\">)<\/span> <span class=\"n\">Employee<\/span><span class=\"p\">(<\/span><span class=\"n\">ctx<\/span> <span class=\"n\">context<\/span><span class=\"o\">.<\/span><span class=\"n\">Context<\/span><span class=\"p\">,<\/span> <span class=\"n\">id<\/span> <span class=\"kt\">string<\/span><span class=\"p\">)<\/span> <span class=\"p\">(<\/span><span class=\"o\">*<\/span><span class=\"n\">model<\/span><span class=\"o\">.<\/span><span class=\"n\">Employee<\/span><span class=\"p\">,<\/span> <span class=\"kt\">error<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nb\">panic<\/span><span class=\"p\">(<\/span><span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Errorf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"not implemented\"<\/span><span class=\"p\">))<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"p\">(<\/span><span class=\"n\">r<\/span> <span class=\"o\">*<\/span><span class=\"n\">queryResolver<\/span><span class=\"p\">)<\/span> <span class=\"n\">Employees<\/span><span class=\"p\">(<\/span><span class=\"n\">ctx<\/span> <span class=\"n\">context<\/span><span class=\"o\">.<\/span><span class=\"n\">Context<\/span><span class=\"p\">,<\/span> <span class=\"n\">limit<\/span> <span class=\"kt\">int<\/span><span class=\"p\">,<\/span> <span class=\"n\">offset<\/span> <span class=\"o\">*<\/span><span class=\"kt\">int<\/span><span class=\"p\">,<\/span> <span class=\"n\">email<\/span> <span class=\"o\">*<\/span><span class=\"kt\">string<\/span><span class=\"p\">,<\/span> <span class=\"n\">gender<\/span> <span class=\"o\">*<\/span><span class=\"n\">model<\/span><span class=\"o\">.<\/span><span class=\"n\">Gender<\/span><span class=\"p\">,<\/span> <span class=\"n\">isManager<\/span> <span class=\"o\">*<\/span><span class=\"kt\">bool<\/span><span class=\"p\">,<\/span> <span class=\"n\">hasDependent<\/span> <span class=\"o\">*<\/span><span class=\"kt\">bool<\/span><span class=\"p\">)<\/span> <span class=\"p\">(<\/span><span class=\"o\">*<\/span><span class=\"n\">model<\/span><span class=\"o\">.<\/span><span class=\"n\">EmployeePagination<\/span><span class=\"p\">,<\/span> <span class=\"kt\">error<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nb\">panic<\/span><span class=\"p\">(<\/span><span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Errorf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"not implemented\"<\/span><span class=\"p\">))<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"c\">\/\/ \u30fb\u30fb\u30fb\u30fb<\/span>\r\n<\/code><\/pre>\n<h3>\u901a\u8fc7\u7f16\u8f91\u7ed3\u6784\u4f53\u5e76\u91cd\u65b0\u751f\u6210\u6765\u751f\u6210\u4ee3\u78012\u3002<\/h3>\n<p>\u987a\u4fbf\u63d0\u4e00\u4e0b\uff0c\u8ba9\u6211\u4eec\u6765\u786e\u8ba4\u4e00\u4e0b\u5728model\/models_gen.go\u6587\u4ef6\u4e2d\u5b9a\u4e49\u7684\u7c7b\u578b\u3002Employee\u7c7b\u578b\u7684\u5b9a\u4e49\u5982\u4e0b\u6240\u793a\u3002\u8be5\u5b9a\u4e49\u8fd8\u53cd\u6620\u4e86\u5728\u6a21\u5f0f\u5b9a\u4e49\u4e2d\u5199\u7684\u6ce8\u91ca\u5462\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">type<\/span> <span class=\"n\">Employee<\/span> <span class=\"k\">struct<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">ID<\/span>            <span class=\"kt\">string<\/span> <span class=\"s\">`json:\"id\"`<\/span>\r\n    <span class=\"n\">Name<\/span>          <span class=\"kt\">string<\/span> <span class=\"s\">`json:\"name\"`<\/span>\r\n    <span class=\"n\">Gender<\/span>        <span class=\"n\">Gender<\/span> <span class=\"s\">`json:\"gender\"`<\/span>\r\n    <span class=\"n\">Email<\/span>         <span class=\"kt\">string<\/span> <span class=\"s\">`json:\"email\"`<\/span>\r\n    <span class=\"n\">LatestLoginAt<\/span> <span class=\"kt\">string<\/span> <span class=\"s\">`json:\"latestLoginAt\"`<\/span>\r\n    <span class=\"c\">\/\/  \u6276\u990a\u5bb6\u65cf\u306e\u4eba\u6570<\/span>\r\n    <span class=\"n\">DependentsNum<\/span> <span class=\"kt\">int<\/span> <span class=\"s\">`json:\"dependentsNum\"`<\/span>\r\n    <span class=\"c\">\/\/  \u7ba1\u7406\u8077\u304b\u3069\u3046\u304b<\/span>\r\n    <span class=\"n\">IsManager<\/span>  <span class=\"kt\">bool<\/span>        <span class=\"s\">`json:\"isManager\"`<\/span>\r\n    <span class=\"n\">Department<\/span> <span class=\"o\">*<\/span><span class=\"n\">Department<\/span> <span class=\"s\">`json:\"department\"`<\/span>\r\n    <span class=\"n\">Company<\/span>    <span class=\"o\">*<\/span><span class=\"n\">Company<\/span>    <span class=\"s\">`json:\"company\"`<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u73b0\u5728\uff0c\u6211\u4eec\u9700\u8981\u7740\u773c\u4e8eDepartment\u548cCompany\u8fd9\u4e24\u4e2a\u6982\u5ff5\u3002\u4e4d\u4e00\u770b\u4f3c\u4e4e\u6ca1\u6709\u95ee\u9898\uff0c\u4f46\u5b9e\u9645\u4e0a\u5b58\u5728\u95ee\u9898\u3002<br \/>\n\u5982\u679c\u5728\u540e\u7aef\u6570\u636e\u5e93\u4e2d\u4f7f\u7528MySQL\u7b49\u5173\u7cfb\u578b\u6570\u636e\u5e93\uff0c\u90a3\u4e48Department\u548cCompany\u4e0d\u662f\u76f4\u63a5\u4f5c\u4e3a\u6570\u636e\u5e93\u8868\u683c\u7684\u5185\u5bb9\uff0c\u800c\u662f\u6210\u4e3a\u4e86\u5916\u952e\u7684ID\uff0c\u6bd4\u5982department_id\u548ccompany_id\u3002\u5f53\u9700\u8981\u83b7\u53d6Company\u6216\u8005Department\u7684\u5185\u5bb9\u65f6\uff0c\u5c31\u9700\u8981\u5355\u72ec\u6267\u884cSQL\u67e5\u8be2\u6216\u8005\u6267\u884c\u5305\u542b\u8fde\u63a5\u64cd\u4f5c\u7684SQL\u67e5\u8be2\u3002\u5728GraphQL\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u6839\u636e\u8bf7\u6c42\u67e5\u8be2\u4e2d\u662f\u5426\u5305\u542b\u5bf9Department\u6216Company\u7684\u6307\u5b9a\uff0c\u7075\u6d3b\u5730\u6267\u884c\u9700\u5355\u72ec\u7684SQL\u67e5\u8be2\u3002\u6211\u8ba4\u4e3a\u8fd9\u662f\u4e00\u4e2a\u53ef\u80fd\u5f15\u8d77\u56f0\u60d1\u7684\u5730\u65b9\uff0c\u6240\u4ee5\u8ba9\u6211\u4eec\u4e00\u8d77\u8bd5\u4e00\u8bd5\u5427\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d8435913a08637a6b572a\/84-0.png\" alt=\"image.png\" \/><\/div>\n<p>\u5c06\u81ea\u52a8\u751f\u6210\u7684\u6a21\u578b\u7c7b\u578b\u66f4\u6539\u3002\u7531\u4e8emodels\/models_gen.go\u6bcf\u6b21\u90fd\u4f1a\u88ab\u91cd\u65b0\u751f\u6210\uff0c\u56e0\u6b64\u4e0d\u4f1a\u76f4\u63a5\u7f16\u8f91\u6b64\u6587\u4ef6\u3002\u76f8\u53cd\uff0c\u5c06\u521b\u5efa\u4e00\u4e2a\u65b0\u7684models\/models.go\u6587\u4ef6\uff0c\u653e\u5728\u76f8\u540c\u7684\u76ee\u5f55\uff08\u5305\uff09\u4e2d\uff0c\u5e76\u6309\u7167\u4ee5\u4e0b\u65b9\u5f0f\u8fdb\u884c\u63cf\u8ff0\u3002\u540c\u65f6\u5220\u9664models_gen.go\u4e2d\u7684Employee\u7ed3\u6784\u4f53\u3002<br \/>\n\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5220\u9664\u4e86Department *Department\u548cCompany *Company\uff0c\u53d6\u800c\u4ee3\u4e4b\u7684\u662f\u5b9a\u4e49DepartmentID string\u548cCompanyID string\u3002\u8fd9\u6837\u79bb\u6570\u636e\u5e93\u8868\u7684\u5b9a\u4e49\u66f4\u8fd1\u4e86\u3002\u4e5f\u8bb8\u4f1a\u6709\u4eba\u542c\u5230ID\u5e94\u8be5\u662fint\u7c7b\u578b\u7684\u58f0\u97f3\uff0c\u4f46\u6211\u4eec\u9009\u62e9\u4e86string\u7c7b\u578b\u3002\u539f\u56e0\u5c06\u5728\u540e\u6587\u4e2d\u8bf4\u660e\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">package<\/span> <span class=\"n\">model<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">Employee<\/span> <span class=\"k\">struct<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">ID<\/span>            <span class=\"kt\">string<\/span> <span class=\"s\">`json:\"id\"`<\/span>\r\n    <span class=\"n\">Name<\/span>          <span class=\"kt\">string<\/span> <span class=\"s\">`json:\"name\"`<\/span>\r\n    <span class=\"n\">Gender<\/span>        <span class=\"n\">Gender<\/span> <span class=\"s\">`json:\"gender\"`<\/span>\r\n    <span class=\"n\">Email<\/span>         <span class=\"kt\">string<\/span> <span class=\"s\">`json:\"email\"`<\/span>\r\n    <span class=\"n\">LatestLoginAt<\/span> <span class=\"kt\">string<\/span> <span class=\"s\">`json:\"latestLoginAt\"`<\/span>\r\n    <span class=\"c\">\/\/  \u6276\u990a\u5bb6\u65cf\u306e\u4eba\u6570<\/span>\r\n    <span class=\"n\">DependentsNum<\/span> <span class=\"kt\">int<\/span> <span class=\"s\">`json:\"dependentsNum\"`<\/span>\r\n    <span class=\"c\">\/\/  \u7ba1\u7406\u8077\u304b\u3069\u3046\u304b<\/span>\r\n    <span class=\"n\">IsManager<\/span>    <span class=\"kt\">bool<\/span>   <span class=\"s\">`json:\"isManager\"`<\/span>\r\n    <span class=\"n\">DepartmentID<\/span> <span class=\"kt\">string<\/span> <span class=\"s\">`json:\"department\"`<\/span> <span class=\"c\">\/\/ Department\u3092\u524a\u9664\u3057\u3066\u3001\u4ee3\u308f\u308a\u306bDepartmentID\u3092\u8a18\u8ff0<\/span>\r\n    <span class=\"n\">CompanyID<\/span>    <span class=\"kt\">string<\/span> <span class=\"s\">`json:\"company\"`<\/span>    <span class=\"c\">\/\/ Company\u3092\u524a\u9664\u3057\u3066\u3001\u4ee3\u308f\u308a\u306bCompanyID\u3092\u8a18\u8ff0<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">func<\/span> <span class=\"p\">(<\/span><span class=\"n\">Employee<\/span><span class=\"p\">)<\/span> <span class=\"n\">IsNode<\/span><span class=\"p\">()<\/span> <span class=\"p\">{}<\/span>\r\n<\/code><\/pre>\n<p>\u5b8c\u6210\u4e86\u5230\u8fd9\u4e2a\u5730\u65b9\u7684\u7f16\u8f91\u4e4b\u540e\uff0c\u8bf7\u518d\u6b21\u8fd0\u884cgqlgen\u547d\u4ee4\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>go run github.com\/99designs\/gqlgen\r\n<\/code><\/pre>\n<p>\u90a3\u4e48\u4f1a\u53d1\u751f\u4ec0\u4e48\u5462\uff1f\u73b0\u5728\u65b0\u751f\u6210\u4e86\u4e00\u4e2aemployee.resolvers.go\u6587\u4ef6\u3002\u8fd9\u91cc\u5b9a\u4e49\u4e86\u4e24\u4e2a\u51fd\u6570\u3002\u7b2c\u4e8c\u4e2a\u51fd\u6570\u662f\u63a5\u6536\u4e00\u4e2aEmployee\u4f5c\u4e3a\u7b2c\u4e8c\u4e2a\u53c2\u6570\uff0c\u5e76\u8fd4\u56deDepartment\u548cCompany\u7684\u51fd\u6570\u3002<br \/>\n\u8fd9\u662f\u56e0\u4e3a\u521a\u624d\u6211\u4eec\u81ea\u5df1\u91cd\u65b0\u5b9a\u4e49\u7684Employee\u5728gqlgen\u4e2d\u53d1\u73b0\u7f3a\u5c11\u4e86Department\u548cCompany\uff0c\u6240\u4ee5\u5b9a\u4e49\u4e86\u8fd9\u4e2a\u51fd\u6570\u6765\u83b7\u53d6\u7f3a\u5931\u7684\u90e8\u5206\u3002\u51fd\u6570\u7684\u7b2c\u4e8c\u4e2a\u53c2\u6570\u662f\u63a5\u6536\u7236\u5bf9\u8c61Employee\uff0c\u6211\u4eec\u53ef\u4ee5\u5229\u7528\u5b83\u6765\u83b7\u53d6\u5b50\u5bf9\u8c61Company\u548cDepartment\u7684\u5904\u7406\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">func<\/span> <span class=\"p\">(<\/span><span class=\"n\">r<\/span> <span class=\"o\">*<\/span><span class=\"n\">employeeResolver<\/span><span class=\"p\">)<\/span> <span class=\"n\">Department<\/span><span class=\"p\">(<\/span><span class=\"n\">ctx<\/span> <span class=\"n\">context<\/span><span class=\"o\">.<\/span><span class=\"n\">Context<\/span><span class=\"p\">,<\/span> <span class=\"n\">obj<\/span> <span class=\"o\">*<\/span><span class=\"n\">model<\/span><span class=\"o\">.<\/span><span class=\"n\">Employee<\/span><span class=\"p\">)<\/span> <span class=\"p\">(<\/span><span class=\"o\">*<\/span><span class=\"n\">model<\/span><span class=\"o\">.<\/span><span class=\"n\">Department<\/span><span class=\"p\">,<\/span> <span class=\"kt\">error<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nb\">panic<\/span><span class=\"p\">(<\/span><span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Errorf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"not implemented\"<\/span><span class=\"p\">))<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"p\">(<\/span><span class=\"n\">r<\/span> <span class=\"o\">*<\/span><span class=\"n\">employeeResolver<\/span><span class=\"p\">)<\/span> <span class=\"n\">Company<\/span><span class=\"p\">(<\/span><span class=\"n\">ctx<\/span> <span class=\"n\">context<\/span><span class=\"o\">.<\/span><span class=\"n\">Context<\/span><span class=\"p\">,<\/span> <span class=\"n\">obj<\/span> <span class=\"o\">*<\/span><span class=\"n\">model<\/span><span class=\"o\">.<\/span><span class=\"n\">Employee<\/span><span class=\"p\">)<\/span> <span class=\"p\">(<\/span><span class=\"o\">*<\/span><span class=\"n\">model<\/span><span class=\"o\">.<\/span><span class=\"n\">Company<\/span><span class=\"p\">,<\/span> <span class=\"kt\">error<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nb\">panic<\/span><span class=\"p\">(<\/span><span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Errorf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"not implemented\"<\/span><span class=\"p\">))<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u53ea\u6709\u5f53\u5ba2\u6237\u7aef\u5728Employee\u67e5\u8be2\u4e2d\u6307\u5b9a\u4e86department\u6216company\u65f6\uff0c\u8fd9\u4e9b\u51fd\u6570\u624d\u4f1a\u88ab\u6267\u884c\u3002\u5982\u679c\u4e0d\u9700\u8981\uff0c\u5b83\u4eec\u5c31\u4e0d\u4f1a\u88ab\u8c03\u7528\u3002\u4f8b\u5982\uff0c\u5728\u4e0b\u9762\u7684\u8bf7\u6c42\u67e5\u8be2\u4e2d\uff0c\u4f1a\u8c03\u7528department()\uff0c\u4f46\u4e0d\u4f1a\u8c03\u7528company()\uff0c\u56e0\u4e3a\u6ca1\u6709\u6307\u5b9a\u5b83\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">query<\/span> <span class=\"p\">{<\/span>\r\n   <span class=\"n\">employee<\/span><span class=\"p\">(<\/span><span class=\"n\">id<\/span><span class=\"p\">:<\/span><span class=\"s2\">\"RW1wbG95ZWU6MQ==\"<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n      <span class=\"n\">id<\/span>\r\n      <span class=\"n\">name<\/span>\r\n      <span class=\"n\">department<\/span> <span class=\"p\">{<\/span>\r\n         <span class=\"n\">id<\/span>\r\n         <span class=\"n\">departmentName<\/span>\r\n      <span class=\"p\">}<\/span>\r\n   <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u597d\u7684\uff0c\u73b0\u5728\u6211\u4eec\u6765\u5bf9\u5176\u4ed6Company\u548cDepartment\u7684\u7ed3\u6784\u4f53\u8fdb\u884c\u7c7b\u4f3c\u7684\u7f16\u8f91\u3002\u6211\u4eec\u5c06\u628a\u5b83\u4eec\u4ecemodels_gen.go\u79fb\u52a8\u5230models.go\u6587\u4ef6\u4e2d\uff0c\u5e76\u8fdb\u884c\u6dfb\u52a0\u548c\u5220\u9664\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">type<\/span> <span class=\"n\">Company<\/span> <span class=\"k\">struct<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">ID<\/span>             <span class=\"kt\">string<\/span> <span class=\"s\">`json:\"id\"`<\/span>\r\n    <span class=\"n\">CompanyName<\/span>    <span class=\"kt\">string<\/span> <span class=\"s\">`json:\"companyName\"`<\/span>\r\n    <span class=\"n\">Representative<\/span> <span class=\"kt\">string<\/span> <span class=\"s\">`json:\"representative\"`<\/span>\r\n    <span class=\"n\">PhoneNumber<\/span>    <span class=\"kt\">string<\/span> <span class=\"s\">`json:\"phoneNumber\"`<\/span>\r\n    <span class=\"c\">\/\/ Departments\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u81ea\u4f53\u3092\u524a\u9664<\/span>\r\n    <span class=\"c\">\/\/ Employees\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u81ea\u4f53\u3092\u524a\u9664<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">func<\/span> <span class=\"p\">(<\/span><span class=\"n\">Company<\/span><span class=\"p\">)<\/span> <span class=\"n\">IsNode<\/span><span class=\"p\">()<\/span> <span class=\"p\">{}<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">Department<\/span> <span class=\"k\">struct<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">ID<\/span>             <span class=\"kt\">string<\/span> <span class=\"s\">`json:\"id\"`<\/span>\r\n    <span class=\"n\">DepartmentName<\/span> <span class=\"kt\">string<\/span> <span class=\"s\">`json:\"departmentName\"`<\/span>\r\n    <span class=\"n\">Email<\/span>          <span class=\"kt\">string<\/span> <span class=\"s\">`json:\"email\"`<\/span>\r\n    <span class=\"n\">CompanyID<\/span>      <span class=\"kt\">string<\/span> <span class=\"s\">`json:\"company\"`<\/span> <span class=\"c\">\/\/ Companies\u3092\u524a\u9664\u3057\u3066\u3001CompanyID\u3092\u8ffd\u8a18<\/span>\r\n    <span class=\"c\">\/\/ Employees\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u81ea\u4f53\u3092\u524a\u9664<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">func<\/span> <span class=\"p\">(<\/span><span class=\"n\">Department<\/span><span class=\"p\">)<\/span> <span class=\"n\">IsNode<\/span><span class=\"p\">()<\/span> <span class=\"p\">{}<\/span>\r\n<\/code><\/pre>\n<p>\u5b8c\u6210\u7f16\u8f91\u540e\uff0c\u8bf7\u91cd\u65b0\u8fd0\u884cgqlgen\u547d\u4ee4\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>go run github.com\/99designs\/gqlgen\r\n<\/code><\/pre>\n<p>\u521a\u521a\u50cf\u4e4b\u524d\u4e00\u6837\uff0c\u5728\u7ed3\u6784\u4f53\u548cGraphQL\u6a21\u5f0f\u5b9a\u4e49\u4e2d\u53d1\u73b0\u4e86\u5dee\u5f02\u7684\u90e8\u5206\uff0c\u5e76\u7531gqlgen\u751f\u6210\u4e86\u8865\u5145\u7f3a\u5931\u90e8\u5206\u7684\u51fd\u6570\u3002\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u65b0\u521b\u5efa\u7684companies.resolvers.go\u6587\u4ef6\u4e2d\u5b9a\u4e49\u4e86\u4e00\u4e2a\u63a5\u6536\u7236\u4eb2\u7c7b\u578bCompany\u4f5c\u4e3a\u7b2c\u4e8c\u4e2a\u53c2\u6570\uff0c\u5e76\u8fd4\u56deDepartmentPagination\u548cEmployeePagination\u7684\u51fd\u6570\u3002<\/p>\n<pre class=\"post-pre\"><code>\r\n<span class=\"k\">func<\/span> <span class=\"p\">(<\/span><span class=\"n\">r<\/span> <span class=\"o\">*<\/span><span class=\"n\">companyResolver<\/span><span class=\"p\">)<\/span> <span class=\"n\">Departments<\/span><span class=\"p\">(<\/span><span class=\"n\">ctx<\/span> <span class=\"n\">context<\/span><span class=\"o\">.<\/span><span class=\"n\">Context<\/span><span class=\"p\">,<\/span> <span class=\"n\">obj<\/span> <span class=\"o\">*<\/span><span class=\"n\">model<\/span><span class=\"o\">.<\/span><span class=\"n\">Company<\/span><span class=\"p\">)<\/span> <span class=\"p\">(<\/span><span class=\"o\">*<\/span><span class=\"n\">model<\/span><span class=\"o\">.<\/span><span class=\"n\">DepartmentPagination<\/span><span class=\"p\">,<\/span> <span class=\"kt\">error<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nb\">panic<\/span><span class=\"p\">(<\/span><span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Errorf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"not implemented\"<\/span><span class=\"p\">))<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"p\">(<\/span><span class=\"n\">r<\/span> <span class=\"o\">*<\/span><span class=\"n\">companyResolver<\/span><span class=\"p\">)<\/span> <span class=\"n\">Employees<\/span><span class=\"p\">(<\/span><span class=\"n\">ctx<\/span> <span class=\"n\">context<\/span><span class=\"o\">.<\/span><span class=\"n\">Context<\/span><span class=\"p\">,<\/span> <span class=\"n\">obj<\/span> <span class=\"o\">*<\/span><span class=\"n\">model<\/span><span class=\"o\">.<\/span><span class=\"n\">Company<\/span><span class=\"p\">)<\/span> <span class=\"p\">(<\/span><span class=\"o\">*<\/span><span class=\"n\">model<\/span><span class=\"o\">.<\/span><span class=\"n\">EmployeePagination<\/span><span class=\"p\">,<\/span> <span class=\"kt\">error<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nb\">panic<\/span><span class=\"p\">(<\/span><span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Errorf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"not implemented\"<\/span><span class=\"p\">))<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u6211\u5c06\u76ee\u524d\u7684\u7f16\u8f91\u6574\u7406\u5230\u4e86\u4e00\u4e2aPull Request\u4e2d\u3002\u5206\u652f\u540d\u4e3afeat3\u3002<br \/>\nhttps:\/\/github.com\/hiroyky\/go_graphql_server_sample\/pull\/3<\/p>\n<h2>\u4e2d\u8eab\u7684\u5b9e\u73b0\u548c\u4e3b\u952e\u7684\u6ce8\u610f\u4e8b\u9879<\/h2>\n<p>\u597d\u7684\uff0c\u73b0\u5728\u8ba9\u6211\u4eec\u6765\u5b9e\u73b0\u81ea\u52a8\u751f\u6210\u7684\u89e3\u6790\u5668\u51fd\u6570\u7684\u5177\u4f53\u529f\u80fd\u3002\u8fd9\u4e9b\u529f\u80fd\u5305\u62ec\u8fde\u63a5\u540e\u7aef\u6570\u636e\u5e93\uff0c\u53d1\u9001\u8bf7\u6c42\u81f3\u5176\u4ed6REST API\u7b49\u7b49\u3002\u7531\u4e8e\u672c\u6587\u7684\u91cd\u70b9\u4e0d\u5728\u4e8e\u6570\u636e\u5e93\u548cREST API\u7684\u901a\u4fe1\uff0c\u6240\u4ee5\u4e0d\u8fdb\u884c\u8be6\u7ec6\u63cf\u8ff0\u3002\u8bf7\u60a8\u81ea\u884c\u8fdb\u4e00\u6b65\u5b8c\u6210\u5177\u4f53\u529f\u80fd\u7684\u5b9e\u73b0\u3002<\/p>\n<p>\u7136\u800c\uff0c\u6709\u4e00\u70b9\u9700\u8981\u6ce8\u610f\u3002\u90a3\u5c31\u662f\u8981\u8de8\u8d8a\u7c7b\u578b\u4f7f\u4e3b\u952eID\u5728\u5168\u7403\u8303\u56f4\u5185\u552f\u4e00\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u96c7\u5458\u7684ID\u662f1\u30012\u30013&#8230;\u8fde\u7eed\u7f16\u53f7\uff0c\u90e8\u95e8\u7684ID\u4e5f\u662f1\u30012\u30013&#8230;\u8fde\u7eed\u7f16\u53f7\uff0c\u4f46\u662fID\u5728\u5168\u7403\u8303\u56f4\u5185\u4e0d\u552f\u4e00\u3002\u56e0\u6b64\uff0c\u4e3b\u952e\u5e94\u8be5\u6309\u7167\u4ee5\u4e0b\u65b9\u5f0f\u7528\u7c7b\u578b\u540d\u79f0\u548c\u96c6\u5408\u6765\u63cf\u8ff0\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Employee:1<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Employee:2<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Employee:3<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">&#8230;<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Department:1<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Department:2<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Department:3<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">&#8230;<\/ul>\n<p>\u901a\u5e38\u60c5\u51b5\u4e0b\uff0cGraphQL\u5c06Base64\u7f16\u7801\u540e\u7684\u5185\u5bb9\u4f5c\u4e3a\u4e3b\u952e\u5904\u7406\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">base64(Employee:1) = &#8220;RW1wbG95ZWU6MQ==&#8221;<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">base64(Department:1) = &#8220;RGVwYXJ0bWVudDox<\/ul>\n<p>\u4e3a\u4e86\u5b9e\u73b0\u8fd9\u4e00\u70b9\uff0c\u6211\u4eec\u5c06\u7ed3\u6784\u4f53\u7684ID\u4eceint\u7c7b\u578b\u6539\u4e3a\u4e86string\u7c7b\u578b\u3002\u5373\u4f7f\u5728\u540e\u7aef\u6570\u636e\u5e93\uff08\u5982MySQL\uff09\u4e2d\uff0c\u4f7f\u7528int\u7684\u8fde\u7eed\u7f16\u53f7\u6765\u7ba1\u7406\u4e3b\u952e\uff0c\u4f46\u5728GraphQL\u7684\u54cd\u5e94\u548c\u8bf7\u6c42\u53c2\u6570\u4e2d\uff0c\u5e94\u8be5\u5c06\u5176\u8f6c\u6362\u4e3a\u4e0e\u7c7b\u578b\u540d\u79f0\u7ec4\u5408\u5728\u4e00\u8d77\u7684\u5b57\u7b26\u4e32\uff08\u7c7b\u578b\u540d\u79f0\uff1a\u7f16\u53f7\uff09\u7684base64\u5b57\u7b26\u4e32\u3002\u539f\u56e0\u662f\uff0c\u5728GraphQL\u4e2d\uff0c\u4ec5\u51edID\u672c\u8eab\u5c31\u53ef\u4ee5\u7ba1\u7406\u7f13\u5b58\u7b49\u5185\u5bb9\uff0c\u4ee5\u907f\u514dID\u7684\u91cd\u590d\u3002\u56e0\u6b64\uff0c\u5982\u679c\u4e3b\u952e\u4f7f\u7528\u4e86\u50cfUUID\u8fd9\u6837\u672c\u8eab\u5c31\u5177\u5907\u552f\u4e00\u6027\u7684\u5f62\u5f0f\uff0c\u90a3\u4e48\u5c31\u4e0d\u9700\u8981\u8fdb\u884c\u8f6c\u6362\u3002<br \/>\n\u6709\u5173\u5168\u5c40\u5bf9\u8c61\u6807\u8bc6\uff08Global Object Identification\uff09\u7684\u89e3\u91ca\u53ef\u53c2\u8003\u3002<\/p>\n<h1>\u9519\u8bef\u5904\u7406<\/h1>\n<p>\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u9700\u8981\u4f7f\u7528\u89e3\u6790\u5668\u751f\u6210\u9519\u8bef\u5e76\u8fd4\u56de\u9519\u8bef\u54cd\u5e94\u3002 gqlgen\u6846\u67b6\u4e5f\u5177\u5907\u6b64\u529f\u80fd\u3002<\/p>\n<p>GraphQL\u7684\u54cd\u5e94JSON\uff0c\u5728\u6b63\u5e38\u60c5\u51b5\u4e0b\u53ea\u8fd4\u56de`data`\uff0c\u4f46\u5728\u9519\u8bef\u54cd\u5e94\u4e2d\u4f1a\u8fd4\u56de\u4e00\u4e2a`errors`\u6570\u7ec4\u3002\u9519\u8bef\u5185\u5bb9\u5305\u62ec\u4ee5\u4e0b\u9879\u76ee\uff1a<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">message: \u30a8\u30e9\u30fc\u306e\u5185\u5bb9\u3092\u7c21\u6f54\u306b\u4f1d\u3048\u308b\u30e1\u30c3\u30bb\u30fc\u30b8<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">path: \u30a8\u30e9\u30fc\u304c\u8d77\u3053\u3063\u305f\u5834\u6240(\u30af\u30a8\u30ea\u306e\u4f4d\u7f6e)<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">extensions: \u305d\u308c\u4ee5\u5916\u306b\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u4f1d\u3048\u305f\u3044\u5185\u5bb9\u304c\u3042\u308c\u3070key:value\u5f62\u5f0f\u3067\u8a18\u8ff0<\/ul>\n<pre class=\"post-pre\"><code><span class=\"p\">{<\/span>\r\n    <span class=\"nl\">\"data\"<\/span><span class=\"p\">:<\/span> <span class=\"p\">{},<\/span>\r\n    <span class=\"nl\">\"errors\"<\/span><span class=\"p\">:<\/span> <span class=\"p\">[<\/span>\r\n        <span class=\"p\">{<\/span> \r\n            <span class=\"nl\">\"message\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"Error: hoge fuga\"<\/span><span class=\"p\">,<\/span> \r\n            <span class=\"nl\">\"path\"<\/span><span class=\"p\">:<\/span> <span class=\"p\">[<\/span> <span class=\"s2\">\"employee\"<\/span> <span class=\"p\">],<\/span> \r\n            <span class=\"nl\">\"extensions\"<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span><span class=\"nl\">\"key1\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"value1\"<\/span><span class=\"p\">}<\/span> \r\n        <span class=\"p\">},<\/span>\r\n        <span class=\"p\">{<\/span> <span class=\"nl\">\"message\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"Error: foo bar\"<\/span><span class=\"p\">,<\/span> <span class=\"nl\">\"path\"<\/span><span class=\"p\">:<\/span> <span class=\"p\">[<\/span> <span class=\"s2\">\"department\"<\/span> <span class=\"p\">]<\/span> <span class=\"p\">},<\/span>\r\n    <span class=\"p\">]<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u4e3a\u4e86\u5b9e\u73b0\u8fd9\u4e2a\uff0c\u6211\u4eec\u9700\u8981\u7f16\u8f91server.go\u4e2d\u7684graphql\u670d\u52a1\u5668\u3002\u6211\u4eec\u5c06\u5728\u670d\u52a1\u5668\u5b9e\u4f8b\u7684SetErrorPresenter\u53c2\u6570\u4e2d\u7f16\u5199\u4e00\u4e2a\u751f\u6210\u9519\u8bef\u54cd\u5e94\u7684\u51fd\u6570\u3002\u5c06resolver\u7b49\u4e2d\u629b\u51fa\u7684\u9519\u8bef\u4f20\u9012\u5230\u53c2\u6570\u7684error\u4e2d\uff0c\u7136\u540e\u57fa\u4e8e\u5b83\u751f\u6210\u9519\u8bef\u54cd\u5e94\u3002\u5728\u6b64\u51fd\u6570\u4e2d\u8fd4\u56degqlerror.Error\u7c7b\u578b\u3002<\/p>\n<pre class=\"post-pre\"><code>    <span class=\"n\">srv<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">handler<\/span><span class=\"o\">.<\/span><span class=\"n\">NewDefaultServer<\/span><span class=\"p\">(<\/span><span class=\"n\">generated<\/span><span class=\"o\">.<\/span><span class=\"n\">NewExecutableSchema<\/span><span class=\"p\">(<\/span><span class=\"n\">generated<\/span><span class=\"o\">.<\/span><span class=\"n\">Config<\/span><span class=\"p\">{<\/span><span class=\"n\">Resolvers<\/span><span class=\"o\">:<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">graph<\/span><span class=\"o\">.<\/span><span class=\"n\">Resolver<\/span><span class=\"p\">{}}))<\/span>\r\n    <span class=\"c\">\/\/ \u30a8\u30e9\u30fc\u51e6\u7406\u3092\u66f8\u304f<\/span>\r\n    <span class=\"n\">srv<\/span><span class=\"o\">.<\/span><span class=\"n\">SetErrorPresenter<\/span><span class=\"p\">(<\/span><span class=\"k\">func<\/span><span class=\"p\">(<\/span><span class=\"n\">ctx<\/span> <span class=\"n\">context<\/span><span class=\"o\">.<\/span><span class=\"n\">Context<\/span><span class=\"p\">,<\/span> <span class=\"n\">e<\/span> <span class=\"kt\">error<\/span><span class=\"p\">)<\/span> <span class=\"o\">*<\/span><span class=\"n\">gqlerror<\/span><span class=\"o\">.<\/span><span class=\"n\">Error<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">graphql<\/span><span class=\"o\">.<\/span><span class=\"n\">DefaultErrorPresenter<\/span><span class=\"p\">(<\/span><span class=\"n\">ctx<\/span><span class=\"p\">,<\/span> <span class=\"n\">e<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"n\">err<\/span><span class=\"o\">.<\/span><span class=\"n\">Message<\/span> <span class=\"o\">=<\/span> <span class=\"n\">e<\/span><span class=\"o\">.<\/span><span class=\"n\">Error<\/span><span class=\"p\">()<\/span>\r\n        <span class=\"n\">err<\/span><span class=\"o\">.<\/span><span class=\"n\">Extensions<\/span> <span class=\"o\">=<\/span> <span class=\"k\">map<\/span><span class=\"p\">[<\/span><span class=\"kt\">string<\/span><span class=\"p\">]<\/span><span class=\"k\">interface<\/span><span class=\"p\">{}{<\/span>\r\n            <span class=\"s\">\"key1\"<\/span><span class=\"o\">:<\/span> <span class=\"s\">\"value1\"<\/span><span class=\"p\">,<\/span>\r\n            <span class=\"s\">\"key2\"<\/span><span class=\"o\">:<\/span> <span class=\"s\">\"value2\"<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"p\">}<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"n\">err<\/span>\r\n    <span class=\"p\">})<\/span>\r\n<\/code><\/pre>\n<p>\u6211\u5df2\u7ecf\u5728GitHub\u4e0a\u521b\u5efa\u4e86\u4e00\u4e2apull request\u3002\u5206\u652f\u540d\u79f0\u662ffeat4\u3002<br \/>\n\u53ef\u4ee5\u4ece\u4ee5\u4e0b\u94fe\u63a5\u67e5\u770b\u76f8\u5173\u5185\u5bb9\uff1a<br \/>\nhttps:\/\/github.com\/hiroyky\/go_graphql_server_sample\/pull\/4<\/p>\n<p>\u516c\u5f0f\u6587\u732e\u94fe\u63a5\uff1ahttps:\/\/gqlgen.com\/reference\/errors\/<\/p>\n<h1>\u5e94\u5bf9\u8d1f\u8377\u95ee\u9898<\/h1>\n<h2>N+1\u95ee\u9898\u7684\u5bf9\u7b56<\/h2>\n<h3>\u603b\u7ed3<\/h3>\n<p>\u5728GraphQL\u4e2d\uff0c\u5b58\u5728\u7740N+1\u95ee\u9898\u4f5c\u4e3a\u4e00\u4e2a\u666e\u904d\u95ee\u9898\u3002\u5f53\u67e5\u8be2\u5f15\u7528\u5b50\u5143\u7d20\u65f6\uff0c\u6bcf\u6b21\u89e3\u6790\u5668\u90fd\u4f1a\u88ab\u6267\u884c\uff0c\u8fd9\u4f1a\u5bfc\u81f4\u540e\u7aef\u6570\u636e\u5e93\u6216API\u53d1\u751f\u5927\u91cf\u7684\u8bf7\u6c42\u73b0\u8c61\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u6211\u4eec\u5199\u4e00\u4e2a\u67e5\u8be2\u6765\u4eceEmployee\u6570\u7ec4\u4e2d\u5f15\u7528\u6240\u5c5e\u7684Company\u3002\u8fd9\u65f6\uff0ccompany()\u89e3\u6790\u5668\u5c06\u88ab\u6bcf\u6b21\u6267\u884c\uff08\u6700\u591a100\u6b21\uff09\u3002\u56e0\u6b64\uff0c\u7531\u4e8e\u6bcf\u6b21\u90fd\u4f1a\u53d1\u751f\u8bf7\u6c42\u5230\u540e\u7aef\u6570\u636e\u5e93\u7b49\uff0c\u6570\u636e\u5e93\u7684\u8d1f\u8f7d\u4f1a\u53d8\u5f97\u975e\u5e38\u91cd\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">query<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"n\">employees<\/span><span class=\"p\">(<\/span><span class=\"n\">limit<\/span><span class=\"p\">:<\/span><span class=\"mi\">100<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">nodes<\/span> <span class=\"p\">{<\/span>\r\n      <span class=\"n\">name<\/span>\r\n      <span class=\"n\">company<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">companyName<\/span>\r\n      <span class=\"p\">}<\/span>\r\n    <span class=\"p\">}<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"k\">SELECT<\/span> <span class=\"o\">*<\/span> <span class=\"k\">FROM<\/span> <span class=\"n\">companies<\/span> <span class=\"k\">WHERE<\/span> <span class=\"n\">company_id<\/span><span class=\"o\">=<\/span><span class=\"mi\">1<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">SELECT<\/span> <span class=\"o\">*<\/span> <span class=\"k\">FROM<\/span> <span class=\"n\">companies<\/span> <span class=\"k\">WHERE<\/span> <span class=\"n\">company_id<\/span><span class=\"o\">=<\/span><span class=\"mi\">1<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">SELECT<\/span> <span class=\"o\">*<\/span> <span class=\"k\">FROM<\/span> <span class=\"n\">companies<\/span> <span class=\"k\">WHERE<\/span> <span class=\"n\">company_id<\/span><span class=\"o\">=<\/span><span class=\"mi\">2<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">SELECT<\/span> <span class=\"o\">*<\/span> <span class=\"k\">FROM<\/span> <span class=\"n\">companies<\/span> <span class=\"k\">WHERE<\/span> <span class=\"n\">company_id<\/span><span class=\"o\">=<\/span><span class=\"mi\">3<\/span><span class=\"p\">;<\/span>\r\n<span class=\"c1\">-- \u30fb\u30fb\u30fb<\/span>\r\n<\/code><\/pre>\n<p>\u4f5c\u4e3a\u89e3\u51b3\u8fd9\u4e2a&#8221;N+1\u95ee\u9898&#8221;\u7684\u65b9\u6cd5\u4e4b\u4e00\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528dataloader\u3002\u5b83\u7684\u4f5c\u7528\u662f\u4e0d\u8981\u6bcf\u6b21\u90fd\u5411\u540e\u7aef\u53d1\u9001\u8bf7\u6c42\uff0c\u800c\u662f\u5c06\u4e00\u6bb5\u65f6\u95f4\u5185\u7684\u5904\u7406\u7ed3\u679c\u79ef\u7d2f\u8d77\u6765\uff0c\u7136\u540e\u518d\u4e00\u5e76\u53d1\u9001\u5230\u540e\u7aef\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u4e0b\u9762\u7684\u67e5\u8be2\u5408\u5e76\u6210\u4e00\u4e2a\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">SELECT<\/span> <span class=\"o\">*<\/span> <span class=\"k\">FROM<\/span> <span class=\"n\">companies<\/span> <span class=\"k\">WHERE<\/span> <span class=\"n\">company_id<\/span> <span class=\"k\">IN<\/span> <span class=\"p\">(<\/span><span class=\"mi\">1<\/span><span class=\"p\">,<\/span><span class=\"mi\">2<\/span><span class=\"p\">,<\/span><span class=\"mi\">3<\/span><span class=\"p\">);<\/span>\r\n<\/code><\/pre>\n<h3>\u5f15\u5165\u00b7\u5b9e\u65bd<\/h3>\n<p>\u4e3a\u4e86\u5b9e\u73b0\u8fd9\u4e2a\uff0c\u6211\u4eec\u5c06\u4f7f\u7528 dataloaden\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>go get github.com\/vektah\/dataloaden\r\n<\/code><\/pre>\n<p>Go\u8bed\u8a00\u7684dataloader\u901a\u8fc7\u4ee3\u7801\u751f\u6210\u6765\u5b9e\u73b0\uff0c\u800c\u5176\u4ed6\u8bed\u8a00\u7684dataloader\u4f3c\u4e4e\u662f\u901a\u8fc7\u6cdb\u578b\u7b49\u65b9\u5f0f\u6765\u5b9e\u73b0\u7684\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span><span class=\"nb\">mkdir <\/span>dataloader\r\n<span class=\"nv\">$ <\/span><span class=\"nb\">cd <\/span>dataloader\r\n<span class=\"nv\">$ <\/span><span class=\"nb\">echo<\/span> <span class=\"s2\">\"package dataloader\"<\/span> <span class=\"o\">&gt;<\/span> gen.go\r\n<span class=\"nv\">$ <\/span>go run github.com\/vektah\/dataloaden CompanyLoader string <span class=\"s2\">\"*github.com\/hiroyky\/go_graphql_server_sample\/graph\/model.Company\"<\/span>\r\n<\/code><\/pre>\n<p>dataloader\/companyloader_gen.go\u6587\u4ef6\u5df2\u751f\u6210\u3002\u5728\u83b7\u53d6\u516c\u53f8\u4fe1\u606f\u65f6\uff0c\u6211\u4eec\u5c1d\u8bd5\u7f16\u8f91\u4ee5\u4f7f\u7528\u6b64CompanyLoader\u3002<\/p>\n<p>\u9996\u5148\uff0c\u5728resolver.go\u6587\u4ef6\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u5b57\u6bb5\uff0c\u4ee5\u4fbf\u5404\u4e2a\u89e3\u6790\u5668\u90fd\u80fd\u591f\u5f15\u7528\u5b83\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">type<\/span> <span class=\"n\">Resolver<\/span> <span class=\"k\">struct<\/span><span class=\"p\">{<\/span>\r\n    <span class=\"n\">CompanyLoader<\/span> <span class=\"o\">*<\/span><span class=\"n\">dataloader<\/span><span class=\"o\">.<\/span><span class=\"n\">CompanyLoader<\/span> <span class=\"c\">\/\/ \u8ffd\u8a18<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u5728server.go\u4e2d\uff0c\u5728GraphQL\u670d\u52a1\u5668\u542f\u52a8\u65f6\u751f\u6210CompanyLoader\u5e76\u4f20\u9012\u3002\uff08\u6211\u8ba4\u4e3a\u8fd9\u4e0d\u5e94\u8be5\u5728main\u51fd\u6570\u4e2d\u5199\uff0c\u4f46\u4e3a\u4e86\u7b80\u5316\u8d77\u89c1\uff0c\u6211\u5c06\u5176\u5199\u5728\u4e86main\u51fd\u6570\u4e2d\u3002\uff09<\/p>\n<p>\u6211\u5c06\u7f16\u5199\u4e00\u4e2a\u4eceFetch\u4e2d\u83b7\u53d6\u6570\u636e\u7684\u51fd\u6570\u3002\u53c2\u6570keys\u4f1a\u5728\u8c03\u7528\u65f6\u6309\u987a\u5e8f\u4f20\u9012\u7ed9\u8be5\u51fd\u6570\uff0c\u5e76\u8fd4\u56de\u6309\u7167keys\u7684\u987a\u5e8f\u7684\u503c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">func<\/span> <span class=\"n\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n<span class=\"c\">\/\/ \u30fb\u30fb\u30fb\u7701\u7565\u30fb\u30fb\u30fb<\/span>\r\n    <span class=\"n\">companyLoader<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">dataloader<\/span><span class=\"o\">.<\/span><span class=\"n\">NewCompanyLoader<\/span><span class=\"p\">(<\/span><span class=\"n\">dataloader<\/span><span class=\"o\">.<\/span><span class=\"n\">CompanyLoaderConfig<\/span><span class=\"p\">{<\/span>\r\n        <span class=\"n\">MaxBatch<\/span><span class=\"o\">:<\/span> <span class=\"m\">100<\/span><span class=\"p\">,<\/span> <span class=\"c\">\/\/ \u6e9c\u3081\u308b\u6700\u5927\u6570\u30010\u3092\u6307\u5b9a\u3059\u308b\u3068\u5236\u9650\u7121\u3057<\/span>\r\n        <span class=\"n\">Wait<\/span><span class=\"o\">:<\/span>     <span class=\"m\">2<\/span> <span class=\"o\">*<\/span> <span class=\"n\">time<\/span><span class=\"o\">.<\/span><span class=\"n\">Millisecond<\/span><span class=\"p\">,<\/span> <span class=\"c\">\/\/ \u6e9c\u3081\u308b\u6642\u9593<\/span>\r\n        <span class=\"n\">Fetch<\/span><span class=\"o\">:<\/span> <span class=\"k\">func<\/span><span class=\"p\">(<\/span><span class=\"n\">keys<\/span> <span class=\"p\">[]<\/span><span class=\"kt\">string<\/span><span class=\"p\">)<\/span> <span class=\"p\">([]<\/span><span class=\"o\">*<\/span><span class=\"n\">model<\/span><span class=\"o\">.<\/span><span class=\"n\">Company<\/span><span class=\"p\">,<\/span> <span class=\"p\">[]<\/span><span class=\"kt\">error<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n            <span class=\"n\">companies<\/span> <span class=\"o\">:=<\/span> <span class=\"nb\">make<\/span><span class=\"p\">([]<\/span><span class=\"o\">*<\/span><span class=\"n\">model<\/span><span class=\"o\">.<\/span><span class=\"n\">Company<\/span><span class=\"p\">,<\/span> <span class=\"nb\">len<\/span><span class=\"p\">(<\/span><span class=\"n\">keys<\/span><span class=\"p\">))<\/span>\r\n            <span class=\"n\">errors<\/span> <span class=\"o\">:=<\/span> <span class=\"nb\">make<\/span><span class=\"p\">([]<\/span><span class=\"kt\">error<\/span><span class=\"p\">,<\/span> <span class=\"nb\">len<\/span><span class=\"p\">(<\/span><span class=\"n\">keys<\/span><span class=\"p\">))<\/span>\r\n\r\n            <span class=\"c\">\/\/ \u53d6\u5f97\u51e6\u7406\u3092\u66f8\u304f SELECT * FROM company WHERE company_id IN (...)<\/span>\r\n\r\n            <span class=\"c\">\/\/ \u5f15\u6570\u306ekeys\u306b\u5bfe\u5fdc\u3059\u308b\u9806\u756a\u306e\u914d\u5217\u3067\u8fd4\u3059\u3002<\/span>\r\n            <span class=\"k\">return<\/span> <span class=\"n\">companies<\/span><span class=\"p\">,<\/span> <span class=\"n\">errors<\/span>\r\n        <span class=\"p\">},<\/span>\r\n    <span class=\"p\">})<\/span>\r\n\r\n    <span class=\"n\">srv<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">handler<\/span><span class=\"o\">.<\/span><span class=\"n\">NewDefaultServer<\/span><span class=\"p\">(<\/span><span class=\"n\">generated<\/span><span class=\"o\">.<\/span><span class=\"n\">NewExecutableSchema<\/span><span class=\"p\">(<\/span><span class=\"n\">generated<\/span><span class=\"o\">.<\/span><span class=\"n\">Config<\/span><span class=\"p\">{<\/span><span class=\"n\">Resolvers<\/span><span class=\"o\">:<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">graph<\/span><span class=\"o\">.<\/span><span class=\"n\">Resolver<\/span><span class=\"p\">{<\/span>\r\n        <span class=\"n\">CompanyLoader<\/span><span class=\"o\">:<\/span> <span class=\"n\">companyLoader<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"p\">}}))<\/span>\r\n<span class=\"c\">\/\/ \u30fb\u30fb\u30fb\u7701\u7565\u30fb\u30fb\u30fb<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u4f60\u53ef\u4ee5\u901a\u8fc7\u8c03\u7528Company.Load\u6765\u6267\u884c\u4e4b\u524d\u5728Fetch\u4e2d\u5b9a\u4e49\u7684\u51fd\u6570\u3002\u5b83\u4e0d\u4f1a\u7acb\u5373\u6267\u884c\uff0c\u800c\u662f\u4f1a\u5c06\u51fd\u6570\u8c03\u7528\u79ef\u7d2f\u8d77\u6765\u5e76\u4e00\u8d77\u6267\u884c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">func<\/span> <span class=\"p\">(<\/span><span class=\"n\">r<\/span> <span class=\"o\">*<\/span><span class=\"n\">employeeResolver<\/span><span class=\"p\">)<\/span> <span class=\"n\">Company<\/span><span class=\"p\">(<\/span><span class=\"n\">ctx<\/span> <span class=\"n\">context<\/span><span class=\"o\">.<\/span><span class=\"n\">Context<\/span><span class=\"p\">,<\/span> <span class=\"n\">obj<\/span> <span class=\"o\">*<\/span><span class=\"n\">model<\/span><span class=\"o\">.<\/span><span class=\"n\">Employee<\/span><span class=\"p\">)<\/span> <span class=\"p\">(<\/span><span class=\"o\">*<\/span><span class=\"n\">model<\/span><span class=\"o\">.<\/span><span class=\"n\">Company<\/span><span class=\"p\">,<\/span> <span class=\"kt\">error<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"n\">r<\/span><span class=\"o\">.<\/span><span class=\"n\">CompanyLoader<\/span><span class=\"o\">.<\/span><span class=\"n\">Load<\/span><span class=\"p\">(<\/span><span class=\"n\">obj<\/span><span class=\"o\">.<\/span><span class=\"n\">CompanyID<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u91cd\u65b0\u603b\u7ed3\u5173\u4e8eDataLoader\u7684\u751f\u6210\u547d\u4ee4\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span><span class=\"nb\">cd <\/span>dataloader\r\n<span class=\"nv\">$ <\/span><span class=\"nb\">echo<\/span> <span class=\"s2\">\"package dataloader\"<\/span> <span class=\"o\">&gt;<\/span> gen.go\r\n\r\n\u25a0int\u578b\u3092\u5f15\u6570\u306b\u53d6\u308b\u95a2\u6570\u3067\u30ed\u30fc\u30c9\u3057\u305f\u3044\u5834\u5408\r\n\u5148\u307b\u3069\u306f\u30b3\u30de\u30f3\u30c9\u306e\u7b2c\u4e8c\u5f15\u6570\u306b<span class=\"sb\">`<\/span>string<span class=\"sb\">`<\/span>\u3092\u6307\u5b9a\u3057\u307e\u3057\u305f\u3002\u3053\u308c\u306f<span class=\"sb\">`<\/span>Fetch\u95a2\u6570<span class=\"sb\">`<\/span>\u306e\u5f15\u6570\u306e\u578b\u306b\u5bfe\u5fdc\u3057\u307e\u3059\u3002\u5f93\u3063\u3066<span class=\"sb\">`<\/span>CompanyLoader.Load<span class=\"o\">()<\/span><span class=\"sb\">`<\/span>\u95a2\u6570\u306e\u5f15\u6570\u3092<span class=\"sb\">`<\/span>int<span class=\"sb\">`<\/span>\u578b\u306b\u3057\u305f\u3044\u5834\u5408\u306f<span class=\"sb\">`<\/span>int<span class=\"sb\">`<\/span>\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\r\n<span class=\"nv\">$ <\/span>go run github.com\/vektah\/dataloaden CompanyLoader int <span class=\"s2\">\"*github.com\/hiroyky\/go_graphql_server_sample\/graph\/model.Company\"<\/span>\r\n\r\n\u25a0\u914d\u5217\u3092\u623b\u308a\u5024\u306e\u30ed\u30fc\u30c9\u95a2\u6570\u3092\u751f\u6210\u3057\u305f\u3044\u5834\u5408\r\n<span class=\"sb\">`<\/span>Load<span class=\"o\">()<\/span><span class=\"sb\">`<\/span>\u95a2\u6570\u3067\u914d\u5217\u3092\u623b\u308a\u5024\u306b\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<span class=\"sb\">`<\/span>Fetch<span class=\"sb\">`<\/span>\u95a2\u6570\u306e\u914d\u5217\u51e6\u7406\u306e\u5b9f\u88c5\u304c\u5c11\u3057\u8907\u96d1\u306b\u306a\u308b\u306e\u3067\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u304a\u305d\u3089\u304f\u4e8c\u91cd\u306efor\u30eb\u30fc\u30d7\u304c\u767a\u751f\u3059\u308b\u305f\u3081\u3002\r\n<span class=\"nv\">$ <\/span>go run github.com\/vektah\/dataloaden CompaniesLoader int <span class=\"s2\">\"[]*github.com\/hiroyky\/go_graphql_server_sample\/graph\/model.Company\"<\/span>\r\n<\/code><\/pre>\n<p>\u70ba\u4e86\u89e3\u6c7a\u4ee5\u4e0aN+1\u554f\u984c\uff0c\u6211\u5011\u5f15\u5165\u4e86datalodaer\u3002\u6211\u5df2\u7d93\u6574\u7406\u6210\u62c9\u53d6\u8acb\u6c42\u3002\u5206\u652f\u540d\u7a31\u662ffeat5\u3002\u60a8\u53ef\u4ee5\u5728\u9019\u500b\u93c8\u63a5\u4e2d\u627e\u5230\uff1ahttps:\/\/github.com\/hiroyky\/go_graphql_server_sample\/pull\/5<\/p>\n<p>\u516c\u5f0f\u6587\u732e\uff1a<br \/>\n&#8211; gqlgen\u5b98\u65b9\u6587\u6863\uff1ahttps:\/\/gqlgen.com\/reference\/dataloaders\/<br \/>\n&#8211; vektah\/dataloaden GitHub\u4ed3\u5e93\uff1ahttps:\/\/github.com\/vektah\/dataloaden<\/p>\n<h2>\u67e5\u8be2\u7684\u91cd\u91cf\u9650\u5236<\/h2>\n<h3>\u7b80\u4ecb\/\u6982\u8ff0\/\u6982\u62ec<\/h3>\n<p>\u5728GraphQL\u7684API\u4e2d\uff0c\u5ba2\u6237\u7aef\u53ef\u4ee5\u81ea\u7531\u5730\u521b\u5efa\u548c\u8bf7\u6c42\u67e5\u8be2\u3002\u7136\u800c\uff0c\u4e00\u4e2a\u95ee\u9898\u662f\u5ba2\u6237\u7aef\u53ef\u4ee5\u8f7b\u677e\u5730\u8bf7\u6c42\u5230\u8d1f\u8f7d\u8f83\u91cd\u7684\u67e5\u8be2\u3002\u56e0\u6b64\uff0c\u5728\u6267\u884c\u67e5\u8be2\u4e4b\u524d\uff0c\u6709\u4e00\u4e2a\u529f\u80fd\u53ef\u4ee5\u8ba1\u7b97\u67e5\u8be2\u7684\u91cd\u91cf\uff0c\u5982\u679c\u8d85\u8fc7\u4e00\u5b9a\u9608\u503c\uff0c\u5219\u4e0d\u6267\u884c\u67e5\u8be2\uff0c\u800c\u662f\u8fd4\u56de\u9519\u8bef\u54cd\u5e94\u3002<\/p>\n<p>\u6211\u8ba4\u4e3a\u5728\u5c06GraphQL\u7684API\u5168\u5c40\u516c\u5f00\u65f6\uff0c\u8fd9\u4e2a\u529f\u80fd\u662f\u5fc5\u9700\u7684\u3002\u4f46\u5982\u679c\u8bbf\u95ee\u4ec5\u9650\u4e8e\u5185\u90e8\u670d\u52a1\u5668\u7b49\u60c5\u51b5\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7\u4e0e\u5f00\u53d1\u8bbf\u95ee\u6e90\u7cfb\u7edf\u7684\u56e2\u961f\u4e8b\u5148\u5546\u8ba8\u67e5\u8be2\u5185\u5bb9\u6765\u89e3\u51b3\u3002<\/p>\n<h3>\u5f15\u5165\u00b7\u5b9e\u65bd<\/h3>\n<p>\u5c06\u4ee5\u4e0b\u4e00\u884c\u4ee3\u7801\u52a0\u5165\u5230 server.go \u6587\u4ef6\u4e2d\u5373\u53ef\u5b8c\u6210\u5bfc\u5165\u3002\u8be5\u4ee3\u7801\u7528\u4e8e\u6307\u5b9a\u6700\u5927\u91cd\u91cf\u7684\u53c2\u6570\u3002\u6bcf\u4e2a\u9879\u76ee\u63091\u8ba1\u7b97\uff0c\u8d85\u8fc7\u8be5\u503c\u5c06\u8fd4\u56de\u9519\u8bef\u54cd\u5e94\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">srv<\/span><span class=\"o\">.<\/span><span class=\"n\">Use<\/span><span class=\"p\">(<\/span><span class=\"n\">extension<\/span><span class=\"o\">.<\/span><span class=\"n\">FixedComplexityLimit<\/span><span class=\"p\">(<\/span><span class=\"m\">10<\/span><span class=\"p\">))<\/span> <span class=\"c\">\/\/ \u91cd\u3055\u304c10\u3092\u8d85\u3048\u305f\u3089\u30a8\u30e9\u30fc\u306b\u3059\u308b<\/span>\r\n<\/code><\/pre>\n<p>\u7136\u800c\uff0c\u5e76\u4e0d\u662f\u6240\u6709\u7684\u9879\u76ee\u90fd\u5177\u6709\u76f8\u540c\u7684\u8d1f\u8f7d\u3002\u4f8b\u5982\uff0c\u8fd4\u56de\u6570\u7ec4\u7684\u9879\u76ee\u6216\u66f4\u65b0\u7cfb\u7684\u7a81\u53d8\u5e94\u8be5\u6bd4\u901a\u5e38\u7684\u67e5\u8be2\u66f4\u91cd\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u53ef\u4ee5\u9488\u5bf9\u6a21\u5f0f\u7684\u6bcf\u4e2a\u9879\u76ee\u5b9a\u4e49\u8ba1\u7b97\u51fd\u6570\u3002<\/p>\n<p>\u7f16\u8f91\u670d\u52a1\u7684\u914d\u7f6e\uff0c\u8be5\u914d\u7f6e\u4ee5\u524d\u76f4\u63a5\u4f20\u9012\u7ed9\u670d\u52a1\u5668\u7684New\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">srv<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">handler<\/span><span class=\"o\">.<\/span><span class=\"n\">NewDefaultServer<\/span><span class=\"p\">(<\/span><span class=\"n\">generated<\/span><span class=\"o\">.<\/span><span class=\"n\">NewExecutableSchema<\/span><span class=\"p\">(<\/span><span class=\"n\">generated<\/span><span class=\"o\">.<\/span><span class=\"n\">Config<\/span><span class=\"p\">{<\/span><span class=\"n\">Resolvers<\/span><span class=\"o\">:<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">graph<\/span><span class=\"o\">.<\/span><span class=\"n\">Resolver<\/span><span class=\"p\">{<\/span><span class=\"n\">CompanyLoader<\/span><span class=\"o\">:<\/span> <span class=\"n\">companyLoader<\/span><span class=\"p\">}}))<\/span>\r\n<\/code><\/pre>\n<p>\u5c06\u4e0a\u8ff0\u5185\u5bb9\u6309\u5982\u4e0b\u65b9\u5f0f\u8fdb\u884c\u66f4\u6539\uff1a\u5b9a\u4e49\u4e00\u4e2a\u51fd\u6570\uff0c\u8be5\u51fd\u6570\u53ef\u4ee5\u5728c.Complexity\u4ee5\u4e0b\u7684\u60c5\u51b5\u4e0b\u8ba1\u7b97\u91cd\u91cf\u3002\u51fd\u6570\u7684\u7b2c\u4e00\u4e2a\u53c2\u6570\u662f\u8bf7\u6c42\u4e2d\u6240\u9700\u54cd\u5e94\u7684\u9879\u76ee\u6570\u91cf\uff0c\u7b2c\u4e8c\u4e2a\u53c2\u6570\u662f\u8bf7\u6c42\u7684\u53c2\u6570\u3002\u6839\u636e\u8fd9\u4e9b\u53c2\u6570\u8ba1\u7b97\u91cd\u91cf\uff0c\u5e76\u4ee5\u6570\u5b57\u5f62\u5f0f\u8fd4\u56de\u3002<\/p>\n<pre class=\"post-pre\"><code>    <span class=\"n\">c<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">generated<\/span><span class=\"o\">.<\/span><span class=\"n\">Config<\/span><span class=\"p\">{<\/span><span class=\"n\">Resolvers<\/span><span class=\"o\">:<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">graph<\/span><span class=\"o\">.<\/span><span class=\"n\">Resolver<\/span><span class=\"p\">{<\/span><span class=\"n\">CompanyLoader<\/span><span class=\"o\">:<\/span> <span class=\"n\">companyLoader<\/span><span class=\"p\">}}<\/span>\r\n    <span class=\"n\">c<\/span><span class=\"o\">.<\/span><span class=\"n\">Complexity<\/span><span class=\"o\">.<\/span><span class=\"n\">Mutation<\/span><span class=\"o\">.<\/span><span class=\"n\">CreateCompany<\/span> <span class=\"o\">=<\/span> <span class=\"k\">func<\/span><span class=\"p\">(<\/span><span class=\"n\">childComplexity<\/span> <span class=\"kt\">int<\/span><span class=\"p\">,<\/span> <span class=\"n\">input<\/span> <span class=\"n\">model<\/span><span class=\"o\">.<\/span><span class=\"n\">CreateCompanyInput<\/span><span class=\"p\">)<\/span> <span class=\"kt\">int<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"m\">5<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"n\">srv<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">handler<\/span><span class=\"o\">.<\/span><span class=\"n\">NewDefaultServer<\/span><span class=\"p\">(<\/span><span class=\"n\">generated<\/span><span class=\"o\">.<\/span><span class=\"n\">NewExecutableSchema<\/span><span class=\"p\">(<\/span><span class=\"n\">c<\/span><span class=\"p\">))<\/span>\r\n<\/code><\/pre>\n<p>\u5c3d\u7ba1\u5982\u6b64\uff0c\u5728\u8ba1\u7b97\u67e5\u8be2\u91cd\u91cf\u7684\u5904\u7406\u4e2d\uff0c\u4ec5\u9650\u5236\u8bbf\u95ee\u6e90\u4e3a\u5185\u90e8\u670d\u52a1\u5668\uff0c\u5e76\u4e0e\u8bbf\u95ee\u6e90\u7684\u5f00\u53d1\u56e2\u961f\u4e8b\u5148\u534f\u5546\u67e5\u8be2\u5185\u5bb9\uff0c\u5982\u679c\u6709\u53ef\u80fd\u7684\u8bdd\uff0c\u4e5f\u8bb8\u66f4\u597d.<\/p>\n<h1>\u6982\u62ec<\/h1>\n<p>\u6211\u5bf9\u4f7f\u7528gqlgen\u5728GO\u8bed\u8a00\u4e2d\u5b9e\u73b0GraphQL\u670d\u52a1\u5668\u7684\u6b65\u9aa4\u8fdb\u884c\u4e86\u63cf\u8ff0\u3002<br \/>\n\u4f7f\u7528gqlgen\u7684\u5f00\u53d1\u6b65\u9aa4\u5982\u4e0b\u6240\u793a\u3002\u8fd9\u662f\u4e00\u4e2a\u5faa\u73af\u7684\u8fc7\u7a0b\u3002<\/p>\n<ol>\u6a21\u5f0f\u5b9a\u4e49\u3001\u4ee3\u7801\u751f\u6210\u3001\u8c03\u6574\u751f\u6210\u7684\u4ee3\u7801\u3001\u4ee3\u7801\u751f\u6210\u3001\u5728\u89e3\u6790\u5668\u4e2d\u7f16\u5199\u5904\u7406\u903b\u8f91<\/ol>\n<p>\u5728\u5176\u4ed6\u65b9\u9762\uff0c\u6211\u8fd8\u7f16\u5199\u4e86\u9519\u8bef\u5904\u7406\u548c\u8d1f\u8f7d\u63a7\u5236\u7684\u4ee3\u7801\u3002\u975e\u5e38\u611f\u8c22\u60a8\u7684\u9605\u8bfb\u3002\u60a8\u8f9b\u82e6\u4e86\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5173\u4e8e\u8fd9\u7bc7\u6587\u7ae0 \u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528Go\u8bed\u8a00\u5f00\u53d1GraphQL\u670d\u52a1\u5668\u3002 \u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\u63d0\u53ca\u7684\u5185\u5bb9 GraphQL\u306e\u30b9 [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-48337","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u3010Go\u8bed\u8a00\u3011\u521d\u6b21\u5b9e\u73b0GraphQL\u670d\u52a1\u5668 | gqlgen - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u3010go\u8bed\u8a00\u3011\u521d\u6b21\u5b9e\u73b0graphql\u670d\u52a1\u5668-gqlgen\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u3010Go\u8bed\u8a00\u3011\u521d\u6b21\u5b9e\u73b0GraphQL\u670d\u52a1\u5668 | gqlgen\" \/>\n<meta property=\"og:description\" content=\"\u5173\u4e8e\u8fd9\u7bc7\u6587\u7ae0 \u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528Go\u8bed\u8a00\u5f00\u53d1GraphQL\u670d\u52a1\u5668\u3002 \u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\u63d0\u53ca\u7684\u5185\u5bb9 GraphQL\u306e\u30b9 [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u3010go\u8bed\u8a00\u3011\u521d\u6b21\u5b9e\u73b0graphql\u670d\u52a1\u5668-gqlgen\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-04-11T04:57:05+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-05-04T10:42:17+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d8435913a08637a6b572a\/20-0.png\" \/>\n<meta name=\"author\" content=\"\u9038, 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