{"id":48161,"date":"2023-02-25T05:01:32","date_gmt":"2022-11-19T07:06:24","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%88%91%e5%9c%a8gae-go%e4%b8%ad%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8%e7%ac%a6%e5%90%88relay%e8%a7%84%e8%8c%83%e7%9a%84graphql%e3%80%82\/"},"modified":"2024-04-29T16:10:46","modified_gmt":"2024-04-29T08:10:46","slug":"%e6%88%91%e5%9c%a8gae-go%e4%b8%ad%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8%e7%ac%a6%e5%90%88relay%e8%a7%84%e8%8c%83%e7%9a%84graphql%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%88%91%e5%9c%a8gae-go%e4%b8%ad%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8%e7%ac%a6%e5%90%88relay%e8%a7%84%e8%8c%83%e7%9a%84graphql%e3%80%82\/","title":{"rendered":"\u6211\u5728GAE\/Go\u4e2d\u5c1d\u8bd5\u4f7f\u7528\u7b26\u5408Relay\u89c4\u8303\u7684GraphQL"},"content":{"rendered":"<p>\u8fd9\u7bc7\u6587\u7ae0\u662f2019\u5e74Go\u9644\u6b73\u672b\u65e5\u5386\u7b2c20\u5929\u7684\u6587\u7ae0\u3002<\/p>\n<h1>\u9996\u5148<\/h1>\n<p>\u5728\u5404\u79cd\u6587\u7ae0\u548c\u6d3b\u52a8\u7684\u6f14\u8bb2\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u542c\u5230\u5173\u4e8e\u5904\u7406 gRPC \u548c Protocol Buffers\u3001\u4ee5\u53ca\u5c06\u5176\u66ff\u4ee3 REST \u7684\u8ba8\u8bba\u3002<br \/>\n\u7136\u800c\uff0c\u5728\u65e5\u672c\uff0c\u5173\u4e8e\u5f15\u5165 GraphQL \u7684\u8ba8\u8bba\u4ec5\u9650\u4e8e\u67e5\u770b Web \u524d\u7aef\uff08\u7279\u522b\u662f\u4f7f\u7528 React \u7684\u5730\u65b9\uff09\u7684\u6d3b\u52a8\u5e7b\u706f\u7247\u4e0a\uff0c\u5e76\u4e14\u5f88\u5c11\u63d0\u5230\u5728\u5b9e\u9645\u4ea7\u54c1\u4e2d\u4f7f\u7528\uff0c\u76f8\u5173\u6587\u7ae0\u4e5f\u53ea\u6709\u96f6\u661f\u5b58\u5728\uff0c\u6240\u4ee5\u4fe1\u606f\u91cf\u660e\u663e\u8f83\u5c11\u3002\u57fa\u672c\u4e0a\uff0c\u7531\u4e8e\u4f7f\u7528 GraphQL \u5c1a\u5b58\u5728\u4e00\u5b9a\u7684\u969c\u788d\uff08\u5c3d\u7ba1\u6d77\u5916\u6709\u5f88\u591a\u76f8\u5173\u6587\u7ae0\uff0c\u5982\u679c\u67e5\u770b\u90a3\u4e9b\u5c31\u4e0d\u5b8c\u5168\u6ca1\u6709\u53ef\u80fd\uff09\uff0c\u6211\u81ea\u5df1\u4e5f\u53ea\u662f\u521a\u521a\u5f00\u59cb\u4e86\u89e3\uff0c\u4f46\u5982\u679c\u901a\u8fc7\u672c\u6587\u80fd\u591f\u589e\u52a0\u5bf9 GAE\/Go \u548c GraphQL \u611f\u5174\u8da3\u7684\u4eba\uff0c\u6211\u4f1a\u975e\u5e38\u9ad8\u5174\u3002<\/p>\n<h1>GraphQL\u6709\u4ec0\u4e48\u4f18\u70b9\uff1f<\/h1>\n<p>\u5728\u8fd9\u91cc\u4e0d\u4f1a\u5bf9GraphQL\u8fdb\u884c\u8be6\u7ec6\u8bf4\u660e\uff0c\u4f46\u5b83\u662f\u4e00\u79cd\u7528\u4e8e\u4eceAPI\u83b7\u53d6\u6570\u636e\u7684\u67e5\u8be2\u8bed\u8a00\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u7ecf\u5e38\u88ab\u63d0\u53ca\u7684\u4f18\u70b9\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u6b32\u3057\u3044\u30c7\u30fc\u30bf\u306e\u307f\u3092\u53d6\u5f97\u3067\u304d\u308b<\/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\">\u4e00\u56de\u306e\u30af\u30a8\u30ea\u3067\u69d8\u3005\u306a\u7a2e\u985e\u306e\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u30b5\u30fc\u30d0\u30fc\u306e\u90fd\u5408\u3068\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u90fd\u5408\u304c\u5206\u96e2\u3067\u304d\u308b<\/ul>\n<p>\u5f53\u9605\u8bfb\u4e00\u4e9b\u6709\u5173GraphQL\u7684\u6587\u7ae0\u65f6\uff0c\u60a8\u53ef\u80fd\u4f1a\u53d1\u73b0\u5b83\u4eec\u90fd\u5199\u5230\u4e86\u76f8\u540c\u7684\u4f18\u70b9\uff0c\u4f46\u53ea\u6709\u5f53\u60a8\u4eb2\u81ea\u4f7f\u7528\u5b83\u65f6\uff0c\u60a8\u624d\u80fd\u771f\u6b63\u7406\u89e3\u5b83\u7684\u597d\u5904\u3002<br \/>\n\u5728\u6211\u4e2a\u4eba\u770b\u6765\uff0c\u6211\u8ba4\u4e3a\u6700\u5927\u7684\u4f18\u70b9\u662f\u80fd\u591f\u5c06\u670d\u52a1\u5668\u548c\u5ba2\u6237\u7aef\u7684\u8003\u8651\u5206\u79bb\u5f00\u6765\u3002<br \/>\n\u56e0\u4e3a\u5728\u4ee5\u524d\u5f00\u53d1\u670d\u52a1\u5668\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6211\u5fc5\u987b\u8003\u8651\u524d\u7aef\u7684\u9700\u6c42\uff0c\u8fd9\u4e9b\u9700\u6c42\u4e0e\u4e1a\u52a1\u903b\u8f91\u65e0\u5173\uff0c\u4f46\u5728\u5b9e\u9645\u5b9e\u65bd\u4e2d\uff0c\u6211\u4e0d\u5f97\u4e0d\u5bf9\u6570\u636e\u7ed3\u6784\u8fdb\u884c\u975e\u6b63\u89c4\u5316\u5904\u7406\uff0c\u521b\u5efa\u4e2d\u95f4\u503c\u7684API\uff0c\u5e76\u4e14\u5728\u670d\u52a1\u5668\u4ee3\u7801\u4e2d\u5b58\u5728\u5f88\u591a\u770b\u4e0d\u61c2\u4e3a\u4ec0\u4e48\u8981\u8fd9\u6837\u505a\u7684\u60c5\u51b5\u3002<br \/>\n\u7136\u800c\uff0c\u4f7f\u7528GraphQL\u540e\uff0c\u670d\u52a1\u5668\u5e94\u7528\u7a0b\u5e8f\u5f00\u53d1\u4eba\u5458\u53ea\u9700\u8003\u8651\u8fd4\u56de\u6bcf\u4e2a\u6570\u636e\uff0c\u57fa\u672c\u4e0a\u5c31\u884c\u4e86\u3002\u56e0\u4e3a\u524d\u7aef\u5e94\u7528\u7a0b\u5e8f\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u901a\u8fc7\u67e5\u8be2\u6765\u786e\u5b9a\u6570\u636e\u683c\u5f0f\uff0c\u5e76\u4e14GraphQL\u4f1a\u6839\u636e\u4ed6\u4eec\u7684\u9700\u6c42\u8fdb\u884c\u6570\u636e\u7684\u91cd\u7ec4\u5904\u7406\u3002<\/p>\n<p>\u7136\u800c\uff0c\u542c\u8d77\u6765\u53ef\u80fd\u4f1a\u89c9\u5f97GraphQL\u7684\u5f15\u5165\u548c\u5c1d\u8bd5\u5f88\u56f0\u96be\uff0c\u4f46\u5b9e\u9645\u4e0a\uff0cGraphQL\u5e76\u6ca1\u6709\u4f7f\u7528\u4ec0\u4e48\u7279\u6b8a\u7684\u6570\u636e\u683c\u5f0f\u6765\u8fd4\u56de\u54cd\u5e94\uff0c\u800c\u662f\u8fd4\u56deJSON\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u5728\u5f53\u524d\u7684\u670d\u52a1\u4e2d\uff0c\u5982\u679c\u6b63\u5728\u4f7f\u7528JSON\u8fdb\u884c\u901a\u4fe1\uff0c\u82e5\u8981\u5c06\u5176\u66ff\u6362\u4e3aGraphQL\uff0c\u53ef\u4ee5\u4ece\u6700\u5c0f\u7684\u66f4\u6539\u5f00\u59cb\uff0c\u8fd9\u79cd\u53ef\u80fd\u6027\u975e\u5e38\u9ad8\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d8384913a08637a6b39a6\/9-1.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2019-12-20 10.30.09.png\" \/><\/div>\n<p>\u8bf7\u53c2\u9605\u5b98\u65b9\u6587\u4ef6\u6216\u8005Facebook\u53d1\u5e03\u7684\u8fd9\u7bc7\u6587\u7ae0\uff0c\u4e86\u89e3\u4e3a\u4ec0\u4e48\u4ea7\u751f\u4e86GraphQL\u7b49\u5176\u4ed6\u76f8\u5173\u4fe1\u606f\uff01<\/p>\n<p>\u7531\u65bc\u4eca\u5e74\u4e5f\u6709\u8056\u8a95\u6b72\u6708\u8a18\u4e8b\uff0c\u5982\u679c\u60a8\u60f3\u9032\u4e00\u6b65\u4e86\u89e3GraphQL\u672c\u8eab\uff0c\u8acb\u53c3\u95b1\u6b64\u8655\uff012019\u5e74GraphQL\u8056\u8a95\u6b72\u6708\u8a18\u4e8b<\/p>\n<h1>\u8fd0\u884c x GraphQL<\/h1>\n<p>\u5f53\u7136\u6709\u51e0\u4e2a\u5e93\u53ef\u7528\u4e8e\u5728Go\u4e2d\u5904\u7406\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">graphql-go\/graphql<\/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\">samsarahq\/thunder<\/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\">graph-gophers\/graphql-go<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">99designs\/gqlgen<\/ul>\n<p>\u73b0\u5728\u6700\u8fd1\u4e00\u76f4\u8fdb\u884c\u5f00\u53d1\u7684\u6709\u4ee5\u4e0b\u56db\u4e2a\u90e8\u5206\u3002\u4eca\u6b21\u4f7f\u7528\u7684\u662f\u7b2c\u56db\u4e2a\u90e8\u5206\uff0c\u5373gqlgen\uff01<\/p>\n<p>\u6211\u8ba4\u4e3a\u53ef\u80fd\u8fd8\u6709\u8bb8\u591a\u5176\u4ed6\u7684\u6587\u7ae0\u4e2d\u4e5f\u4f7f\u7528\u4e86\u8fd9\u79cd\u65b9\u5f0f\uff0c\u4f46\u662f\u6211\u4e2a\u4eba\u7684\u539f\u56e0\u5982\u4e0b\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">GraphQL\u30b9\u30ad\u30fc\u30de\u304b\u3089\u30af\u30a8\u30ea\u89e3\u91c8\u3057\u3066\u3001\u305d\u308c\u306b\u5fdc\u3058\u305f\u30e1\u30bd\u30c3\u30c9\uff08\u30ea\u30be\u30eb\u30d0\u30fc\uff09\u3092\u547c\u3076\u3068\u3053\u308d\u307e\u3067\u3092\u81ea\u52d5\u751f\u6210\u3057\u3066\u304f\u308c\u308b<\/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\">\u4ed6\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3068\u9055\u3063\u3066\u3001\u30b9\u30ad\u30fc\u30de\u30d5\u30a1\u30fc\u30b9\u30c8\u306a\u30e9\u30a4\u30d6\u30e9\u30ea\u3068\u306a\u3063\u3066\u3044\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u958b\u767a\u304c\u6700\u3082\u76db\u3093\u3067\u3001\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3082\u63c3\u3063\u3066\u3044\u308b<\/ul>\n<p>\u7531\u4e8e\u5b83\u53ef\u4ee5\u81ea\u52a8\u751f\u6210\u4ee3\u7801\uff0c\u5373\u4f7f\u5bf9GraphQL\u4e0d\u592a\u4e86\u89e3\uff0c\u53ea\u8981\u61c2Go\u7684\u4eba\u51c6\u5907\u597d\u5b9e\u73b0\u63d0\u4f9b\u7684\u63a5\u53e3\uff0c\u5b83\u5c31\u53ef\u4ee5\u8fd0\u884c\uff0c\u4e3a\u6211\u4eec\u63d0\u4f9b\u4e86\u4e00\u4e2a\u5feb\u901f\u5c1d\u8bd5\u7684\u53ef\u80fd\u3002<\/p>\n<p>\u8bf7\u53c2\u8003gqlgen\u64b0\u5199\u7684\u8fd9\u56db\u4e2a\u5e93\u7684\u529f\u80fd\u6bd4\u8f83\u8868\uff08\u56e0\u4e3a\u662f\u7531gqlgen\u64b0\u5199\u7684\uff0c\u53ef\u80fd\u4f1a\u6709\u4e9b\u504f\u89c1\uff09\uff0c\u9009\u62e9\u6700\u4f73\u7684\u5e93\u3002<\/p>\n<h1>Relay\u7684\u67b6\u6784\u89c4\u8303<\/h1>\n<p>GraphQL\u975e\u5e38\u5177\u6709\u8868\u8fbe\u80fd\u529b\uff0c\u5982\u679c\u6709\u9700\u6c42\uff0c\u53ef\u4ee5\u5b9e\u73b0\u5404\u79cd\u5404\u6837\u7684\u529f\u80fd\u3002\u7136\u800c\uff0c\u8fd9\u6837\u505a\u4f1a\u8ba9\u67e5\u8be2\u548c\u6a21\u5f0f\u53d8\u5f97\u590d\u6742\uff0c\u53d8\u5f97\u65e0\u5e8f\u3002\u56e0\u6b64\uff0c\u6211\u8ba4\u4e3a\u6700\u597d\u6309\u7167\u4e00\u5b9a\u89c4\u5219\u8fdb\u884c\u64cd\u4f5c\uff0c\u5e76\u6839\u636e\u8fd9\u4e2a\u89c4\u5219\u5c06\u5176\u5e94\u7528\u4e8e\u5404\u4e2a\u670d\u52a1\u3002\u63a5\u4e0b\u6765\uff0c\u8c08\u4e00\u8c08Relay\uff0c\u5b83\u662fFacebook\u5f00\u53d1\u7684\u4e00\u4e2a\u7528\u4e8e\u5904\u7406GraphQL\u7684React\u5ba2\u6237\u7aef\u5e93\u3002\u5728\u5176\u4e2d\uff0c\u5b9a\u4e49\u4e86\u7528\u4e8e\u66f4\u597d\u5730\u5229\u7528GraphQL\u7684\u6a21\u5f0f\u89c4\u8303\u3002\u9996\u5148\uff0c\u6309\u7167\u8fd9\u4e2a\u89c4\u8303\u7f16\u5199\uff0c\u7136\u540e\u5728\u5404\u4e2a\u670d\u52a1\u4e2d\u5e94\u7528\u6240\u9700\u7684\u5185\u5bb9\uff0c\u5e76\u6dfb\u52a0\u6240\u7f3a\u5c11\u7684\u90e8\u5206\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">interface Node \u3092\u5b9a\u7fa9\u3057\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306fid\u306b\u3063\u3066\u5f15\u3051\u308b\u3088\u3046\u306b\u3059\u308b<\/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\">\u30ea\u30b9\u30c8\u3092\u8fd4\u3059\u5834\u5408\u306fCursor Connections\u306b\u5f93\u3046<\/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\">Mutation\u306e\u540d\u524d\u306f\u52d5\u8a5e\u3001\u5f15\u6570\u306e\u578b\u540d\u306bInput\u30b5\u30d5\u30a3\u30c3\u30af\u30b9\u3001\u8fd4\u308a\u5024\u306e\u578b\u540d\u306bPayload\u30b5\u30d5\u30a3\u30c3\u30af\u30b9\u3092\u3064\u3051\u308b<\/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\">Mutation\u306e\u5165\u529b\u3068\u51fa\u529b\u3092\u7d10\u4ed8\u3051\u3066\u8abf\u6574\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5909\u63db\u8b58\u5225\u5b50\u304c\u5fc5\u8981\u306b\u306a\u308b\u5834\u5408\u304c\u3042\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">(\u3053\u308c\u306fv7.1.0\u307e\u3067\u306fMutation\u306e\u5f15\u6570\u3068\u8fd4\u308a\u5024\u306b\u8b58\u5225\u5b50clientMutationId\u304c\u5fc5\u8981\u3068\u66f8\u3044\u3066\u3042\u308b\u304c\u3001v8.0.0\u3067\u306f\u305d\u306e\u8a18\u8f09\u306f\u6d88\u3048\u3066\u3044\u308b\uff09<\/ul>\n<h1>\u4e2d\u7ee7 x GAE\/Go<\/h1>\n<p>\u7531\u4e8e\u4e0b\u9762\u7684\u8ba8\u8bba\u6d89\u53ca\u5230GAE\/Go\uff0c\u6240\u4ee5\u5b83\u5c06\u662f\u5173\u4e8e\u4f7f\u7528datastore\u7684\u8ba8\u8bba\u3002<\/p>\n<h2>\u5b9a\u4e49\u4e00\u4e2a\u540d\u4e3aNode\u7684\u63a5\u53e3\uff0c\u4f7f\u5176\u5b9e\u4f53\u80fd\u591f\u901a\u8fc7id\u8fdb\u884c\u8bbf\u95ee\u3002<\/h2>\n<p>\u9996\u5148\u5b9a\u4e49\u4e00\u4e2a\u540d\u4e3aNode\u7684\u63a5\u53e3\uff0c\u4f7f\u5f97\u5b9e\u4f53\u80fd\u591f\u901a\u8fc7id\u8fdb\u884c\u68c0\u7d22\u3002<br \/>\n\u5728GraphQL\u4e2d\uff0cid\u5fc5\u987b\u5728\u6240\u6709\u5b9e\u4f53\u4e2d\u662f\u552f\u4e00\u7684\u3002<br \/>\n\u4e5f\u5c31\u662f\u8bf4\uff0c\u5f53\u5b58\u5728User\u548cItem\uff0c\u5e76\u4e14\u5b83\u4eec\u5206\u522b\u5177\u6709id\u65f6\uff0c<\/p>\n<pre class=\"post-pre\"><code>User.ID = 1\r\nItem.ID = 1\r\n<\/code><\/pre>\n<p>&#8220;\u8fd9\u662f\u4e0d\u53ef\u88ab\u5bb9\u5fcd\u7684\u3002\u6bcf\u4e2a\u4eba\u90fd\u5fc5\u987b\u662f\u552f\u4e00\u7684\u3002&#8221;<\/p>\n<pre class=\"post-pre\"><code>User.ID = \"User:1\"\r\nItem.ID = \"Item:1\"\r\n<\/code><\/pre>\n<p>\u5982\u4f55\u4ee5\u4e2d\u6587\u8868\u8fbe\u4ee5\u4e0b\u5185\u5bb9\uff0c\u4ec5\u9700\u4e00\u4e2a\u9009\u9879\uff1a<br \/>\n\u5fc5\u987b\u660e\u786e\u786e\u4fdd\u5b9e\u4f53\u552f\u4e00\u3002<\/p>\n<p>\u7136\u540e\uff0c\u5728Relay\u4e2d\u5b9a\u4e49\u4e86\u63a5\u53e3Node\uff0c\u5fc5\u987b\u901a\u8fc7id\u6765\u83b7\u53d6\u6bcf\u4e2a\u5b9e\u4f53\u3002<\/p>\n<p>\u7b80\u5355\u6765\u8bf4\uff0c\u5982\u679c\u4f7f\u7528UUID\u7b49\u65b9\u5f0f\u80fd\u591f\u552f\u4e00\u786e\u5b9a\u4e00\u4e2aID\u548c\u5b9e\u4f53\u7684\u4e00\u5bf9\u4e00\u5173\u7cfb\uff0c\u4f46\u4ec5\u901a\u8fc7ID\u65e0\u6cd5\u63d0\u53d6\u5b9e\u4f53\u3002\u8fd9\u662f\u56e0\u4e3a\u65e0\u6cd5\u5224\u65ad\u8be5ID\u662f\u4ec0\u4e48\u7c7b\u578b\u7684ID\u3002<\/p>\n<p>\u56e0\u6b64\uff0c\u5982\u679c\u4f7f\u7528GAE\u4e14\u5047\u8bbe\u4f7f\u7528datastore\uff0c\u6211\u8ba4\u4e3a\u6700\u597d\u5c06ID\u8bbe\u4e3a\u5305\u542bKind\u540d\u79f0\u548c\u6bcf\u4e2aKind\u7684\u6807\u8bc6\u7b26\uff08id\u6216name\uff09\u7684\u5b57\u7b26\u4e32\u3002\u8fd9\u6837\u505a\u7684\u597d\u5904\u662f\uff0c\u60a8\u53ef\u4ee5\u6e05\u695a\u5730\u77e5\u9053\u8981\u5728\u54ea\u4e2aKind\u4e2d\u68c0\u7d22\uff0c\u56e0\u6b64\u5373\u4f7f\u53ea\u6709ID\uff0c\u4e5f\u53ef\u4ee5\u63d0\u53d6\u5b9e\u4f53\u3002<\/p>\n<h2>\u5982\u679c\u8fd4\u56de\u4e00\u4e2a\u5217\u8868\uff0c\u5e94\u6309\u7167Cursor Connections\u7684\u89c4\u5b9a\u3002<\/h2>\n<p>\u5728\u4f7f\u7528Relay\u65f6\uff0c\u5982\u679c\u5e0c\u671b\u8fd4\u56de\u4e00\u4e2a\u5bf9\u8c61\u5217\u8868\uff0c\u53ef\u4ee5\u901a\u8fc7\u8bbe\u5b9a\u4e00\u5b9a\u7684\u89c4\u5219\u6765\u65b9\u4fbf\u5730\u5904\u7406\u5206\u9875\u548c\u5217\u8868\u64cd\u4f5c\u3002\u4e0b\u9762\u662f\u6240\u9700\u7684\u7c7b\u578b\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">XXXEdge\u578b: Cursor\u3068XXX\u578b\u3092\u6301\u3064\u578b<\/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\">PageInfo: \u30da\u30fc\u30b8\u60c5\u5831\u3092\u6301\u3064\u578b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">XXXConnection\u578b: PageInfo\u3068XXXEdge\u306e\u30ea\u30b9\u30c8\u3068\u305d\u306e\u4ed6\u5fc5\u8981\u306a\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u6301\u3064\u578b<\/ul>\n<p>\u4f7f\u7528\u8fd9\u4e9b\u7c7b\u578b\uff0c\u5728\u4ee5\u4e0b\u6b65\u9aa4\u4e2d\u5b9a\u4e49\u67e5\u8be2\u7684\u6a21\u5f0f\uff1a<br \/>\n&#8211; \u5c06\u8fd4\u56de\u5217\u8868\u7684\u90e8\u5206\u66f4\u6539\u4e3a\u8fd4\u56deXXXConnection<br \/>\n&#8211; \u5728\u67e5\u8be2\u5b57\u6bb5\u4e2d\u6dfb\u52a0\u53c2\u6570{first: Int, after: String, last: Int, before: String}<\/p>\n<p>\u7b2c\u4e00\u4e2a\/\u4e4b\u540e\uff0c\u6700\u540e\u4e00\u4e2a\/\u4e4b\u524d\u7684\u7ec4\u5408\u65b9\u5f0f\u8fdb\u884c\u5904\u7406\u3002<br \/>\n&#8211; \u7b2c\u4e00\u4e2a\/\u6700\u540e\u4e00\u4e2a\uff1a\u4ece\u4e4b\u540e\/\u4e4b\u524d\uff08\u5149\u6807\uff09\u5f00\u59cb\u83b7\u53d6\u591a\u5c11\u4e2a\u5bf9\u8c61<br \/>\n&#8211; \u4e4b\u540e\uff1a\u63a5\u6536\u5149\u6807\uff0c\u5e76\u6307\u793a\u5217\u8868\u4e2d\u5f00\u59cb\u83b7\u53d6\u5bf9\u8c61\u7684\u4f4d\u7f6e<br \/>\n&#8211; \u4e4b\u524d\uff1a\u63a5\u6536\u5149\u6807\uff0c\u5e76\u6307\u793a\u5217\u8868\u4e2d\u5f00\u59cb\u83b7\u53d6\u5bf9\u8c61\u7684\u4f4d\u7f6e\u3002\u540c\u65f6\uff0c\u5c06\u4e4b\u540e\u53cd\u5411\u4f7f\u7528\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\">type<\/span> <span class=\"n\">User<\/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=\"p\">}<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">PageInfo<\/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\">startCursor<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span>\r\n    <span class=\"n\">endCursor<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">UserEdge<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">cursor<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">node<\/span><span class=\"p\">:<\/span> <span class=\"n\">User<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">UserConnection<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">edges<\/span><span class=\"p\">:<\/span> <span class=\"p\">[<\/span><span class=\"n\">UserEdge<\/span><span class=\"p\">]<\/span>\r\n    <span class=\"n\">pageInfo<\/span><span class=\"p\">:<\/span> <span class=\"n\">PageInfo<\/span><span class=\"p\">!<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">Query<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"n\">users<\/span><span class=\"p\">(<\/span><span class=\"n\">first<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Int<\/span><span class=\"p\">,<\/span> <span class=\"n\">after<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">,<\/span> <span class=\"n\">last<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Int<\/span><span class=\"p\">,<\/span> <span class=\"n\">before<\/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<p>\u5728\u8fd9\u91cc\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528datastore\u7684Cursor\u6765\u5904\u7406Cursor\u7684\u51fa\u73b0\u3002\u4f46\u662f\uff0c\u5f53\u5904\u7406datastore\u7684Cursor\u65f6\uff0c\u6709\u4e00\u4e9b\u9700\u8981\u6ce8\u610f\u7684\u5730\u65b9\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">datastore\u306eCursor\u306f\u540c\u3058\u30af\u30a8\u30ea\u3067\u306a\u3044\u3068\u4f7f\u3046\u3053\u3068\u304c\u3067\u304d\u306a\u3044<\/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\">datastore\u306eCursor\u306f\u6697\u53f7\u5316\u3092\u30c7\u30b3\u30fc\u30c9\u3057\u3066\u7d50\u679c\u306e\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306b\u95a2\u3059\u308b\u60c5\u5831\u3092\u53d6\u5f97\u3067\u304d\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u30c7\u30fc\u30bf\u306e\u66f4\u65b0<\/ul>\n<p>\u6211\u4f1a\u9010\u4e00\u8fdb\u884c\u89e3\u91ca\u3002<\/p>\n<h3>\u5728datastore\u4e2d\uff0c\u53ea\u80fd\u4f7f\u7528\u76f8\u540c\u7684\u67e5\u8be2\u624d\u80fd\u4f7f\u7528Cursor\u3002<\/h3>\n<p>\u53ea\u6709\u5728\u4ee5\u4e0b\u60c5\u51b5\u4e0b\uff0c\u624d\u80fd\u5904\u7406\u76f8\u540c\u7684\u6e38\u6807\uff1a\u6570\u636e\u5b58\u50a8\u6e38\u6807\u7684\u9650\u5236\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u5b9f\u884c\u3057\u305f\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3068\u540c\u3058\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306eCursor<\/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\">\u958b\u59cb\u30ab\u30fc\u30bd\u30eb\u3001\u7d42\u4e86\u30ab\u30fc\u30bd\u30eb\u3001\u30aa\u30d5\u30bb\u30c3\u30c8\u3001\u6761\u4ef6\u306e\u66f4\u65b0<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u5143\u30af\u30a8\u30ea\u304c&#8221;key&#8221;\u3067\u6700\u5f8c\u306b\u4e26\u3073\u66ff\u3048\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u9006\u5f15\u304d\u30af\u30a8\u30ea\u3067\u4f7f\u7528\u3067\u304d\u308b<\/ul>\n<p>\u57fa\u672c\u4e0a\uff0c\u9664\u4e86\u9019\u500b\u4ee5\u5916\uff0c\u4f60\u57fa\u672c\u4e0a\u4e0d\u80fd\u8655\u7406\u76f8\u540c\u7684\u6e38\u6a19\u3002<br \/>\n\uff08\u7136\u800c\uff0c\u6839\u64da\u6211\u6240\u78ba\u8a8d\u7684\uff0c\u5c0d\u65bc\u9006\u5411\u67e5\u8a62\uff0c\u96d6\u7136\u4e0d\u6703\u51fa\u932f\uff0c\u4f46\u5b98\u65b9\u6587\u4ef6\u4e2d\u6307\u51fa\u6e38\u6a19\u4e0d\u61c9\u8a72\u4f7f\u7528\uff0c\u6240\u4ee5\u6700\u597d\u4e0d\u8981\u4f7f\u7528\u3002\uff09<\/p>\n<h3>\u6570\u636e\u5b58\u50a8Cursor\u53ef\u4ee5\u89e3\u7801\u52a0\u5bc6\u5e76\u83b7\u53d6\u6709\u5173\u7ed3\u679c\u5b9e\u4f53\u7684\u4fe1\u606f\u3002<\/h3>\n<p>\u8fd9\u4e2aCursor\u91cc\u5305\u542b\u4e86\u4ee5\u4e0b\u4fe1\u606f\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">ProjectID<\/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\">\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306e\u7a2e\u985e<\/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\">\u30ad\u30fc\u540d\u307e\u305f\u306f\u6570\u5024 ID<\/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\">\u7956\u5148\u30ad\u30fc<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u30d7\u30ed\u30d1\u30c6\u30a3<\/ul>\n<p>\u6362\u53e5\u8bdd\u8bf4\uff0c\u5373\u8be5\u65f6\u95f4\u70b9\u7684\u5b9e\u4f53\u6570\u636e\u5df2\u88ab\u5305\u542b\u5728\u5185\u3002\u56e0\u6b64\uff0c\u5982\u679c\u4e0d\u5e0c\u671b\u6cc4\u9732\u8fd9\u4e9b\u4fe1\u606f\uff0c\u5c31\u9700\u8981\u5c06\u67d0\u79cd\u52a0\u5bc6\u6570\u636e\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\u3002<\/p>\n<h3>\u6570\u636e\u66f4\u65b0<\/h3>\n<p>\u5149\u6807\u8868\u793a\u5728\u8fd4\u56de\u6700\u7ec8\u7ed3\u679c\u4e4b\u540e\u7ed3\u679c\u5217\u8868\u4e2d\u7684\u4f4d\u7f6e\u3002<br \/>\n\u4ee5\u4e0b\u662f\u63a5\u4e0b\u6765\u7684\u89c4\u5219\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30c7\u30fc\u30bf\u304c\u66f4\u65b0\u3055\u308c\u305f\u5834\u5408\u30ab\u30fc\u30bd\u30eb\u4f4d\u7f6e\u3088\u308a\u5f8c\u306e\u7d50\u679c\u3067\u767a\u751f\u3057\u305f\u5909\u5316\u306f\u691c\u77e5\u3059\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u30ab\u30fc\u30bd\u30eb\u3088\u308a\u5f8c\u306e\u7d50\u679c\u3092\u53d6\u3063\u3066\u304d\u3066\u3082\u65b0\u3057\u3044\u7d50\u679c\u306f\u8fd4\u3055\u306a\u3044<\/ul>\n<p>\u56e0\u4e3a\u5177\u5907\u8fd9\u4e9b\u7279\u5f81\uff0c\u4f7f\u7528\u5149\u6807\u590d\u5236\u7684\u5185\u5bb9\u5c06\u4fdd\u6301\u4e0d\u53d8\uff0c\u4f46\u662f\u5bf9\u4e8e\u4ee5\u540e\u590d\u5236\u7684\u5185\u5bb9\uff0c\u5b83\u5c06\u53d1\u751f\u53d8\u5316\uff0c\u6240\u4ee5\u4e0d\u5fc5\u62c5\u5fc3\u8fd9\u4e2a\u3002<\/p>\n<p>\u9700\u8981\u8003\u8651\u4ee5\u4e0a\u9650\u5236\uff0c\u5728GAE\/GO\u4e2d\u8fdb\u884c\u5b9e\u65bd\uff01<\/p>\n<h1>\u7b80\u5355\u5b9e\u65bd<\/h1>\n<p>\u8ba9\u6211\u4eec\u770b\u4e00\u4e2a\u8bd5\u9a8c\u6027\u7684\u7b80\u5355GraphQL+GAE\/GO\u5b9e\u73b0\u3002<\/p>\n<p>\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u5f53\u6211\u5728\u4f7f\u7528datastore\u548cgo\u65f6\uff0c\u6211\u4f1a\u4f7f\u7528go.mercari.io\/datastore\u3002\u56e0\u6b64\uff0cUser\u548cEvent\u7684struct\u4e2d\u7684id\u4f1a\u5e26\u6709boom\u6807\u7b7e\u3002<\/p>\n<p>\u672c\u6b21\uff0c\u9664\u4e86\u4e0a\u8ff0\u63d0\u5230\u7684\u5185\u5bb9\u4ee5\u5916\uff0c\u6211\u4eec\u6ca1\u6709\u6d89\u53ca\u5176\u4ed6\u590d\u6742\u67e5\u8be2\uff0c\u4e5f\u6ca1\u6709\u5f15\u5165dataloaden\u3001Cash\u3001\u6216\u4ece\u7236\u7ea7\u7684\u7236\u7ea7\u83b7\u53d6\u6570\u636e\u7b49\u64cd\u4f5c\u3002<\/p>\n<h2>\u76ee\u5f55\u7ed3\u6784<\/h2>\n<pre class=\"post-pre\"><code>\r\n.\r\n\u251c\u2500\u2500 app.yaml\r\n\u251c\u2500\u2500 datastore\r\n\u2502\u00a0\u00a0 \u2514\u2500\u2500 datastore.go\r\n\u251c\u2500\u2500 go.mod\r\n\u251c\u2500\u2500 go.sum\r\n\u251c\u2500\u2500 gqlgen\r\n\u2502\u00a0\u00a0 \u251c\u2500\u2500 generated.go\r\n\u2502\u00a0\u00a0 \u2514\u2500\u2500 models_gen.go\r\n\u251c\u2500\u2500 gqlgen.yml\r\n\u251c\u2500\u2500 main.go\r\n\u251c\u2500\u2500 model\r\n\u2502\u00a0\u00a0 \u251c\u2500\u2500 event.go\r\n\u2502\u00a0\u00a0 \u251c\u2500\u2500 page.go\r\n\u2502\u00a0\u00a0 \u2514\u2500\u2500 user.go\r\n\u251c\u2500\u2500 schema.graphql\r\n\u2514\u2500\u2500 server\r\n    \u2514\u2500\u2500 resolver_gen.go\r\n\r\n<\/code><\/pre>\n<h2>\u6a21\u5f0f<\/h2>\n<p>\u7531\u4e8e\u672c\u6b21\u6570\u636e\u5b58\u50a8\u7684\u884c\u4e3a\uff0c\u5728\u540c\u4e00\u6279\u6b21\u4e2d\u5b9e\u73b0last\/before\u7684\u64cd\u4f5c\u53d8\u5f97\u5f88\u56f0\u96be\uff0c\u56e0\u6b64\u6211\u4eec\u5c06\u5176\u7701\u7565\u3002<br \/>\n\u56e0\u6b64\uff0cHasPreviousPage\u4e5f\u88ab\u7701\u7565\u4e86\u3002<\/p>\n<pre class=\"post-pre\"><code>\r\n<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\">type<\/span> <span class=\"n\">PageInfo<\/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\">startCursor<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span>\r\n    <span class=\"n\">endCursor<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">User<\/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\r\n    <span class=\"n\">events<\/span><span class=\"p\">(<\/span><span class=\"n\">first<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Int<\/span><span class=\"p\">!,<\/span> <span class=\"n\">after<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">):<\/span> <span class=\"n\">EventConnection<\/span><span class=\"p\">!<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">Event<\/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\">userID<\/span><span class=\"p\">:<\/span> <span class=\"nb\">ID<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">description<\/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\">type<\/span> <span class=\"n\">UserEdge<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">cursor<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">node<\/span><span class=\"p\">:<\/span> <span class=\"n\">User<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">UserConnection<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">edges<\/span><span class=\"p\">:<\/span> <span class=\"p\">[<\/span><span class=\"n\">UserEdge<\/span><span class=\"p\">]<\/span>\r\n    <span class=\"n\">pageInfo<\/span><span class=\"p\">:<\/span> <span class=\"n\">PageInfo<\/span><span class=\"p\">!<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">EventEdge<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">cursor<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">node<\/span><span class=\"p\">:<\/span> <span class=\"n\">Event<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">EventConnection<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">edges<\/span><span class=\"p\">:<\/span> <span class=\"p\">[<\/span><span class=\"n\">EventEdge<\/span><span class=\"p\">]<\/span>\r\n    <span class=\"n\">pageInfo<\/span><span class=\"p\">:<\/span> <span class=\"n\">PageInfo<\/span><span class=\"p\">!<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n\r\n<span class=\"k\">input<\/span> <span class=\"n\">CreateUserInput<\/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=\"p\">}<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">CreateUserPayload<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">user<\/span><span class=\"p\">:<\/span> <span class=\"n\">User<\/span><span class=\"p\">!<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">input<\/span> <span class=\"n\">CreateEventInput<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">userID<\/span><span class=\"p\">:<\/span> <span class=\"nb\">ID<\/span><span class=\"p\">!<\/span>\r\n    <span class=\"n\">description<\/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\">type<\/span> <span class=\"n\">CreateEventPayload<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">event<\/span><span class=\"p\">:<\/span> <span class=\"n\">Event<\/span><span class=\"p\">!<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">Mutation<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">createUser<\/span><span class=\"p\">(<\/span><span class=\"n\">input<\/span><span class=\"p\">:<\/span> <span class=\"n\">CreateUserInput<\/span><span class=\"p\">!):<\/span> <span class=\"n\">CreateUserPayload<\/span>\r\n    <span class=\"n\">createEvent<\/span><span class=\"p\">(<\/span><span class=\"n\">input<\/span><span class=\"p\">:<\/span> <span class=\"n\">CreateEventInput<\/span><span class=\"p\">!):<\/span> <span class=\"n\">CreateEventPayload<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">Query<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">node<\/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\">Node<\/span>\r\n    <span class=\"n\">user<\/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\">User<\/span>\r\n    <span class=\"n\">users<\/span><span class=\"p\">(<\/span><span class=\"n\">first<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Int<\/span><span class=\"p\">!,<\/span> <span class=\"n\">after<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">):<\/span> <span class=\"n\">UserConnection<\/span><span class=\"p\">!<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h2>gqlgen\u914d\u7f6e<\/h2>\n<p>\u5c06\u751f\u6210\u7684\u4ee3\u7801\u653e\u5728gqlgen\u76ee\u5f55\u4e0b\uff0c\u5e76\u5c06\u53ef\u91cd\u7528\u7684\u7ed3\u6784\u4f53\u653e\u5728models\u6587\u4ef6\u4e2d\u3002\u5982\u679c\u6307\u5b9a\u4e86autobind\uff0c\u90a3\u4e48\u8be5\u7ed3\u6784\u4f53\u5c06\u4e0d\u4f1a\u5728models_gen.go\u4e2d\u751f\u6210\uff0c\u800c\u662f\u4f7f\u7528\u6307\u5b9a\u7684\u7ed3\u6784\u4f53\uff01<\/p>\n<pre class=\"post-pre\"><code><span class=\"na\">schema<\/span><span class=\"pi\">:<\/span>\r\n<span class=\"pi\">-<\/span> <span class=\"s\">schema.graphql<\/span>\r\n<span class=\"na\">exec<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">filename<\/span><span class=\"pi\">:<\/span> <span class=\"s\">gqlgen\/generated.go<\/span>\r\n<span class=\"na\">model<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">filename<\/span><span class=\"pi\">:<\/span> <span class=\"s\">gqlgen\/models_gen.go<\/span>\r\n<span class=\"na\">resolver<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">filename<\/span><span class=\"pi\">:<\/span> <span class=\"s\">server\/resolver_gen.go<\/span>\r\n  <span class=\"na\">type<\/span><span class=\"pi\">:<\/span> <span class=\"s\">Resolver<\/span>\r\n<span class=\"na\">autobind<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"pi\">-<\/span> <span class=\"s\">github.com\/Yamashou\/gae-relay\/model<\/span>\r\n\r\n<\/code><\/pre>\n<h2>\u6a21\u578b<\/h2>\n<p>\u5373\u4f7f\u6211\u4eec\u79f0\u5176\u4e3a\u6a21\u578b\uff0c\u4f46\u662f\u7531\u4e8e\u7f3a\u4e4f\u7279\u5b9a\u7684\u4e1a\u52a1\u903b\u8f91\uff0c\u6211\u4eec\u57fa\u672c\u4e0a\u662f\u5728\u7ed3\u6784\u4f53\u7684\u5b9a\u4e49\u4e2d\u8fdb\u884c\u81ea\u5b9a\u4e49\u800c\u4e0d\u662f\u81ea\u52a8\u751f\u6210\u3002<\/p>\n<p>\u5f53\u67e5\u770b\u4ee5\u4e0b\u7528\u6237\u65f6\uff0c\u53ef\u4ee5\u770b\u5230\u6a21\u5f0f\u4e2d\u6ca1\u6709\u5b9a\u4e49\u7684&#8221;events&#8221;\u3002<br \/>\n\u8fd9\u662f\u56e0\u4e3a\u6211\u60f3\u8981\u5b9a\u4e49\u4e00\u4e2a\u7528\u4e8e\u83b7\u53d6&#8221;events&#8221;\u7684\u89e3\u6790\u5668\uff0c\u6240\u4ee5\u6ca1\u6709\u5199\u5b83\u3002<br \/>\n\u8fd9\u6837\u505a\u7684\u597d\u5904\u662f\uff0cgqlgen\u4f1a\u81ea\u52a8\u5728\u63a5\u53e3\u4e2d\u6dfb\u52a0&#8221;Events&#8221;\u89e3\u6790\u5668\u3002<\/p>\n<pre class=\"post-pre\"><code>\r\n<span class=\"c\">\/\/ user.go<\/span>\r\n<span class=\"k\">package<\/span> <span class=\"n\">model<\/span>\r\n\r\n<span class=\"k\">import<\/span> <span class=\"p\">(<\/span>\r\n    <span class=\"s\">\"fmt\"<\/span>\r\n    <span class=\"s\">\"strings\"<\/span>\r\n\r\n    <span class=\"s\">\"github.com\/google\/uuid\"<\/span>\r\n<span class=\"p\">)<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">UserID<\/span> <span class=\"kt\">string<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">newUserID<\/span><span class=\"p\">()<\/span> <span class=\"n\">UserID<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"n\">UserID<\/span><span class=\"p\">(<\/span><span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Sprintf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"User:%s\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">uuid<\/span><span class=\"o\">.<\/span><span class=\"n\">New<\/span><span class=\"p\">()<\/span><span class=\"o\">.<\/span><span class=\"n\">String<\/span><span class=\"p\">()))<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">IsUserID<\/span><span class=\"p\">(<\/span><span class=\"n\">s<\/span> <span class=\"kt\">string<\/span><span class=\"p\">)<\/span> <span class=\"kt\">bool<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"n\">strings<\/span><span class=\"o\">.<\/span><span class=\"n\">Contains<\/span><span class=\"p\">(<\/span><span class=\"n\">s<\/span><span class=\"p\">,<\/span> <span class=\"s\">\"User\"<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">NewUser<\/span><span class=\"p\">(<\/span><span class=\"n\">name<\/span> <span class=\"kt\">string<\/span><span class=\"p\">)<\/span> <span class=\"o\">*<\/span><span class=\"n\">User<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">User<\/span><span class=\"p\">{<\/span>\r\n        <span class=\"n\">ID<\/span><span class=\"o\">:<\/span>   <span class=\"n\">newUserID<\/span><span class=\"p\">(),<\/span>\r\n        <span class=\"n\">Name<\/span><span class=\"o\">:<\/span> <span class=\"n\">name<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">User<\/span> <span class=\"k\">struct<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">ID<\/span>   <span class=\"n\">UserID<\/span> <span class=\"s\">`boom:\"id\" 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=\"p\">}<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"p\">(<\/span><span class=\"n\">u<\/span> <span class=\"o\">*<\/span><span class=\"n\">User<\/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\">UserConnection<\/span> <span class=\"k\">struct<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">Edges<\/span>    <span class=\"p\">[]<\/span><span class=\"o\">*<\/span><span class=\"n\">UserEdge<\/span> <span class=\"s\">`json:\"edges\"`<\/span>\r\n    <span class=\"n\">PageInfo<\/span> <span class=\"o\">*<\/span><span class=\"n\">PageInfo<\/span>   <span class=\"s\">`json:\"pageInfo\"`<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">UserEdge<\/span> <span class=\"k\">struct<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">Cursor<\/span> <span class=\"kt\">string<\/span> <span class=\"s\">`json:\"cursor\"`<\/span>\r\n    <span class=\"n\">Node<\/span>   <span class=\"o\">*<\/span><span class=\"n\">User<\/span>  <span class=\"s\">`json:\"node\"`<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code>\r\n<span class=\"c\">\/\/ event.go<\/span>\r\n\r\n<span class=\"k\">package<\/span> <span class=\"n\">model<\/span>\r\n\r\n<span class=\"k\">import<\/span> <span class=\"p\">(<\/span>\r\n    <span class=\"s\">\"fmt\"<\/span>\r\n    <span class=\"s\">\"strings\"<\/span>\r\n\r\n    <span class=\"s\">\"github.com\/google\/uuid\"<\/span>\r\n<span class=\"p\">)<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">EventID<\/span> <span class=\"kt\">string<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">newEventID<\/span><span class=\"p\">()<\/span> <span class=\"n\">EventID<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"n\">EventID<\/span><span class=\"p\">(<\/span><span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Sprintf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Event:%s\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">uuid<\/span><span class=\"o\">.<\/span><span class=\"n\">New<\/span><span class=\"p\">()<\/span><span class=\"o\">.<\/span><span class=\"n\">String<\/span><span class=\"p\">()))<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">IsEventID<\/span><span class=\"p\">(<\/span><span class=\"n\">s<\/span> <span class=\"kt\">string<\/span><span class=\"p\">)<\/span> <span class=\"kt\">bool<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"n\">strings<\/span><span class=\"o\">.<\/span><span class=\"n\">Contains<\/span><span class=\"p\">(<\/span><span class=\"n\">s<\/span><span class=\"p\">,<\/span> <span class=\"s\">\"Event\"<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">NewEvent<\/span><span class=\"p\">(<\/span><span class=\"n\">userID<\/span> <span class=\"n\">UserID<\/span><span class=\"p\">,<\/span> <span class=\"n\">description<\/span> <span class=\"kt\">string<\/span><span class=\"p\">)<\/span> <span class=\"o\">*<\/span><span class=\"n\">Event<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">Event<\/span><span class=\"p\">{<\/span>\r\n        <span class=\"n\">ID<\/span><span class=\"o\">:<\/span>          <span class=\"n\">newEventID<\/span><span class=\"p\">(),<\/span>\r\n        <span class=\"n\">UserID<\/span><span class=\"o\">:<\/span>      <span class=\"n\">userID<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"n\">Description<\/span><span class=\"o\">:<\/span> <span class=\"n\">description<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">Event<\/span> <span class=\"k\">struct<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">ID<\/span>          <span class=\"n\">EventID<\/span> <span class=\"s\">`boom:\"id\" json:\"id\"`<\/span>\r\n    <span class=\"n\">UserID<\/span>      <span class=\"n\">UserID<\/span>  <span class=\"s\">`json:\"userID\"`<\/span>\r\n    <span class=\"n\">Description<\/span> <span class=\"kt\">string<\/span>  <span class=\"s\">`json:\"description\"`<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"p\">(<\/span><span class=\"n\">e<\/span> <span class=\"o\">*<\/span><span class=\"n\">Event<\/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\">EventConnection<\/span> <span class=\"k\">struct<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">Edges<\/span>    <span class=\"p\">[]<\/span><span class=\"o\">*<\/span><span class=\"n\">EventEdge<\/span> <span class=\"s\">`json:\"edges\"`<\/span>\r\n    <span class=\"n\">PageInfo<\/span> <span class=\"o\">*<\/span><span class=\"n\">PageInfo<\/span>    <span class=\"s\">`json:\"pageInfo\"`<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">EventEdge<\/span> <span class=\"k\">struct<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">Cursor<\/span> <span class=\"kt\">string<\/span> <span class=\"s\">`json:\"cursor\"`<\/span>\r\n    <span class=\"n\">Node<\/span>   <span class=\"o\">*<\/span><span class=\"n\">Event<\/span> <span class=\"s\">`json:\"node\"`<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<\/code><\/pre>\n<h2>\u6570\u636e\u5b58\u50a8<\/h2>\n<p>\u7531\u4e8e\u8fd9\u4e2a\u5df2\u7ecf\u76f8\u5f53\u5927\u4e86\uff0c\u6240\u4ee5\u6211\u4f1a\u53bb\u770b\u770b\u83b7\u53d6\u591a\u4e2a\u7528\u6237\u7684\u90e8\u5206\u7684GetUsers\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">package<\/span> <span class=\"n\">datastore<\/span>\r\n\r\n<span class=\"k\">import<\/span> <span class=\"p\">(<\/span>\r\n    <span class=\"s\">\"context\"<\/span>\r\n\r\n    <span class=\"s\">\"google.golang.org\/api\/iterator\"<\/span>\r\n\r\n    <span class=\"s\">\"github.com\/Yamashou\/gae-relay\/model\"<\/span>\r\n\r\n    <span class=\"s\">\"golang.org\/x\/xerrors\"<\/span>\r\n\r\n    <span class=\"s\">\"go.mercari.io\/datastore\/boom\"<\/span>\r\n\r\n    <span class=\"s\">\"go.mercari.io\/datastore\"<\/span>\r\n<span class=\"p\">)<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">Client<\/span> <span class=\"k\">struct<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">client<\/span> <span class=\"n\">datastore<\/span><span class=\"o\">.<\/span><span class=\"n\">Client<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"o\">...<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"p\">(<\/span><span class=\"n\">c<\/span> <span class=\"o\">*<\/span><span class=\"n\">Client<\/span><span class=\"p\">)<\/span> <span class=\"n\">GetUsers<\/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\">cursor<\/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\">UserConnection<\/span><span class=\"p\">,<\/span> <span class=\"kt\">error<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"c\">\/\/ \u6b21\u306e\u30da\u30fc\u30b8\u304c\u5b58\u5728\u3059\u308b\u304b\u78ba\u8a8d\u3059\u308b\u305f\u30811\u4ef6\u591a\u304f\u53d6\u5f97\u3059\u308b<\/span>\r\n    <span class=\"n\">limitPlusOne<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">limit<\/span> <span class=\"o\">+<\/span> <span class=\"m\">1<\/span>\r\n    <span class=\"n\">bm<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">boom<\/span><span class=\"o\">.<\/span><span class=\"n\">FromClient<\/span><span class=\"p\">(<\/span><span class=\"n\">ctx<\/span><span class=\"p\">,<\/span> <span class=\"n\">c<\/span><span class=\"o\">.<\/span><span class=\"n\">client<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">q<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">bm<\/span><span class=\"o\">.<\/span><span class=\"n\">NewQuery<\/span><span class=\"p\">(<\/span><span class=\"n\">bm<\/span><span class=\"o\">.<\/span><span class=\"n\">Kind<\/span><span class=\"p\">(<\/span><span class=\"n\">model<\/span><span class=\"o\">.<\/span><span class=\"n\">User<\/span><span class=\"p\">{}))<\/span><span class=\"o\">.<\/span>\r\n        <span class=\"n\">Limit<\/span><span class=\"p\">(<\/span><span class=\"n\">limitPlusOne<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">cursor<\/span> <span class=\"o\">!=<\/span> <span class=\"s\">\"\"<\/span> <span class=\"p\">{<\/span>\r\n                <span class=\"c\">\/\/ \u30ab\u30fc\u30bd\u30eb\u304c\u7a7a\u51fa\u306a\u3044\u6642\u306f\u305d\u308c\u3092\u30bb\u30c3\u30c8\u3059\u308b<\/span>\r\n        <span class=\"n\">cur<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">c<\/span><span class=\"o\">.<\/span><span class=\"n\">client<\/span><span class=\"o\">.<\/span><span class=\"n\">DecodeCursor<\/span><span class=\"p\">(<\/span><span class=\"n\">cursor<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n            <span class=\"k\">return<\/span> <span class=\"no\">nil<\/span><span class=\"p\">,<\/span> <span class=\"n\">xerrors<\/span><span class=\"o\">.<\/span><span class=\"n\">Errorf<\/span><span class=\"p\">(<\/span><span class=\"s\">\": %w\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"p\">}<\/span>\r\n        <span class=\"n\">q<\/span> <span class=\"o\">=<\/span> <span class=\"n\">q<\/span><span class=\"o\">.<\/span><span class=\"n\">Start<\/span><span class=\"p\">(<\/span><span class=\"n\">cur<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">}<\/span>\r\n\r\n    <span class=\"k\">var<\/span> <span class=\"n\">edges<\/span> <span class=\"p\">[]<\/span><span class=\"o\">*<\/span><span class=\"n\">model<\/span><span class=\"o\">.<\/span><span class=\"n\">UserEdge<\/span>\r\n    <span class=\"n\">it<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">bm<\/span><span class=\"o\">.<\/span><span class=\"n\">Run<\/span><span class=\"p\">(<\/span><span class=\"n\">q<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"k\">for<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">var<\/span> <span class=\"n\">user<\/span> <span class=\"n\">model<\/span><span class=\"o\">.<\/span><span class=\"n\">User<\/span>\r\n        <span class=\"n\">_<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">it<\/span><span class=\"o\">.<\/span><span class=\"n\">Next<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"n\">user<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"k\">if<\/span> <span class=\"n\">xerrors<\/span><span class=\"o\">.<\/span><span class=\"n\">Is<\/span><span class=\"p\">(<\/span><span class=\"n\">err<\/span><span class=\"p\">,<\/span> <span class=\"n\">iterator<\/span><span class=\"o\">.<\/span><span class=\"n\">Done<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n            <span class=\"k\">break<\/span>\r\n        <span class=\"p\">}<\/span>\r\n        <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n            <span class=\"k\">return<\/span> <span class=\"no\">nil<\/span><span class=\"p\">,<\/span> <span class=\"n\">xerrors<\/span><span class=\"o\">.<\/span><span class=\"n\">Errorf<\/span><span class=\"p\">(<\/span><span class=\"s\">\": %w\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"p\">}<\/span>\r\n\r\n        <span class=\"n\">cursor<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">it<\/span><span class=\"o\">.<\/span><span class=\"n\">Cursor<\/span><span class=\"p\">()<\/span>\r\n        <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n            <span class=\"k\">return<\/span> <span class=\"no\">nil<\/span><span class=\"p\">,<\/span> <span class=\"n\">xerrors<\/span><span class=\"o\">.<\/span><span class=\"n\">Errorf<\/span><span class=\"p\">(<\/span><span class=\"s\">\": %w\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"p\">}<\/span>\r\n\r\n        <span class=\"n\">edge<\/span> <span class=\"o\">:=<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">model<\/span><span class=\"o\">.<\/span><span class=\"n\">UserEdge<\/span><span class=\"p\">{<\/span>\r\n            <span class=\"n\">Cursor<\/span><span class=\"o\">:<\/span> <span class=\"n\">cursor<\/span><span class=\"o\">.<\/span><span class=\"n\">String<\/span><span class=\"p\">(),<\/span>\r\n            <span class=\"n\">Node<\/span><span class=\"o\">:<\/span>   <span class=\"o\">&amp;<\/span><span class=\"n\">user<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"p\">}<\/span>\r\n\r\n        <span class=\"n\">edges<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">append<\/span><span class=\"p\">(<\/span><span class=\"n\">edges<\/span><span class=\"p\">,<\/span> <span class=\"n\">edge<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">}<\/span>\r\n\r\n    <span class=\"c\">\/\/ \u3053\u306e\u30da\u30fc\u30b8\u306e\u6700\u521d\u3068\u6700\u5f8c\u306eCursor\u3092\u8fd4\u3059<\/span>\r\n    <span class=\"k\">var<\/span> <span class=\"n\">startCursor<\/span><span class=\"p\">,<\/span> <span class=\"n\">endCursor<\/span> <span class=\"kt\">string<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"nb\">len<\/span><span class=\"p\">(<\/span><span class=\"n\">edges<\/span><span class=\"p\">)<\/span> <span class=\"o\">&gt;<\/span> <span class=\"m\">0<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">startCursor<\/span> <span class=\"o\">=<\/span> <span class=\"n\">edges<\/span><span class=\"p\">[<\/span><span class=\"m\">0<\/span><span class=\"p\">]<\/span><span class=\"o\">.<\/span><span class=\"n\">Cursor<\/span>\r\n        <span class=\"n\">endCursor<\/span> <span class=\"o\">=<\/span> <span class=\"n\">edges<\/span><span class=\"p\">[<\/span><span class=\"nb\">len<\/span><span class=\"p\">(<\/span><span class=\"n\">edges<\/span><span class=\"p\">)<\/span><span class=\"o\">-<\/span><span class=\"m\">1<\/span><span class=\"p\">]<\/span><span class=\"o\">.<\/span><span class=\"n\">Cursor<\/span>\r\n    <span class=\"p\">}<\/span>\r\n\r\n    <span class=\"c\">\/\/ \u6b21\u306e\u30da\u30fc\u30b8\u304c\u5b58\u5728\u3059\u308b\u5834\u5408<\/span>\r\n    <span class=\"k\">var<\/span> <span class=\"n\">hasNextPage<\/span> <span class=\"kt\">bool<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"nb\">len<\/span><span class=\"p\">(<\/span><span class=\"n\">edges<\/span><span class=\"p\">)<\/span> <span class=\"o\">==<\/span> <span class=\"n\">limitPlusOne<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">hasNextPage<\/span> <span class=\"o\">=<\/span> <span class=\"no\">true<\/span>\r\n        <span class=\"c\">\/\/ \u6700\u5f8c\u306e1\u4ef6\u306f\u6b21\u306e\u30da\u30fc\u30b8\u306e\u5b58\u5728\u78ba\u8a8d\u7528\u306a\u306e\u3067\u9664\u5916\u3059\u308b<\/span>\r\n        <span class=\"n\">edges<\/span> <span class=\"o\">=<\/span> <span class=\"n\">edges<\/span><span class=\"p\">[<\/span><span class=\"o\">:<\/span><span class=\"nb\">len<\/span><span class=\"p\">(<\/span><span class=\"n\">edges<\/span><span class=\"p\">)<\/span><span class=\"o\">-<\/span><span class=\"m\">1<\/span><span class=\"p\">]<\/span>\r\n    <span class=\"p\">}<\/span>\r\n\r\n    <span class=\"n\">conn<\/span> <span class=\"o\">:=<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">model<\/span><span class=\"o\">.<\/span><span class=\"n\">UserConnection<\/span><span class=\"p\">{<\/span>\r\n        <span class=\"n\">Edges<\/span><span class=\"o\">:<\/span> <span class=\"n\">edges<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"n\">PageInfo<\/span><span class=\"o\">:<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">model<\/span><span class=\"o\">.<\/span><span class=\"n\">PageInfo<\/span><span class=\"p\">{<\/span>\r\n            <span class=\"n\">StartCursor<\/span><span class=\"o\">:<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">startCursor<\/span><span class=\"p\">,<\/span>\r\n            <span class=\"n\">EndCursor<\/span><span class=\"o\">:<\/span>   <span class=\"o\">&amp;<\/span><span class=\"n\">endCursor<\/span><span class=\"p\">,<\/span>\r\n            <span class=\"n\">HasNextPage<\/span><span class=\"o\">:<\/span> <span class=\"n\">hasNextPage<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"p\">},<\/span>\r\n    <span class=\"p\">}<\/span>\r\n\r\n    <span class=\"k\">return<\/span> <span class=\"n\">conn<\/span><span class=\"p\">,<\/span> <span class=\"no\">nil<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h2>\u89e3\u51b3\u8005<\/h2>\n<p>\u5728 server\/resolver_gen.go \u6587\u4ef6\u4e2d\u4f1a\u751f\u6210\u5982\u4e0b\u4ee3\u7801\u3002<br \/>\n\u57fa\u672c\u4e0a\uff0c\u53ea\u8981\u5728\u8fd9\u91cc\u8fdb\u884c\u5b9e\u73b0\uff0c\u5c31\u53ef\u4ee5\u521b\u5efaGraphQL\u7684API\u3002<\/p>\n<pre class=\"post-pre\"><code>\r\n<span class=\"k\">package<\/span> <span class=\"n\">server<\/span>\r\n\r\n<span class=\"k\">import<\/span> <span class=\"p\">(<\/span>\r\n    <span class=\"s\">\"context\"<\/span>\r\n\r\n    <span class=\"s\">\"github.com\/Yamashou\/gae-relay\/gqlgen\"<\/span>\r\n    <span class=\"s\">\"github.com\/Yamashou\/gae-relay\/model\"<\/span>\r\n<span class=\"p\">)<\/span>\r\n\r\n<span class=\"c\">\/\/ THIS CODE IS A STARTING POINT ONLY. IT WILL NOT BE UPDATED WITH SCHEMA CHANGES.<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">Resolver<\/span> <span class=\"k\">struct<\/span><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\">Resolver<\/span><span class=\"p\">)<\/span> <span class=\"n\">Event<\/span><span class=\"p\">()<\/span> <span class=\"n\">gqlgen<\/span><span class=\"o\">.<\/span><span class=\"n\">EventResolver<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">eventResolver<\/span><span class=\"p\">{<\/span><span class=\"n\">r<\/span><span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">func<\/span> <span class=\"p\">(<\/span><span class=\"n\">r<\/span> <span class=\"o\">*<\/span><span class=\"n\">Resolver<\/span><span class=\"p\">)<\/span> <span class=\"n\">Mutation<\/span><span class=\"p\">()<\/span> <span class=\"n\">gqlgen<\/span><span class=\"o\">.<\/span><span class=\"n\">MutationResolver<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">mutationResolver<\/span><span class=\"p\">{<\/span><span class=\"n\">r<\/span><span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">func<\/span> <span class=\"p\">(<\/span><span class=\"n\">r<\/span> <span class=\"o\">*<\/span><span class=\"n\">Resolver<\/span><span class=\"p\">)<\/span> <span class=\"n\">Query<\/span><span class=\"p\">()<\/span> <span class=\"n\">gqlgen<\/span><span class=\"o\">.<\/span><span class=\"n\">QueryResolver<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">queryResolver<\/span><span class=\"p\">{<\/span><span class=\"n\">r<\/span><span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">func<\/span> <span class=\"p\">(<\/span><span class=\"n\">r<\/span> <span class=\"o\">*<\/span><span class=\"n\">Resolver<\/span><span class=\"p\">)<\/span> <span class=\"n\">User<\/span><span class=\"p\">()<\/span> <span class=\"n\">gqlgen<\/span><span class=\"o\">.<\/span><span class=\"n\">UserResolver<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">userResolver<\/span><span class=\"p\">{<\/span><span class=\"n\">r<\/span><span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">eventResolver<\/span> <span class=\"k\">struct<\/span><span class=\"p\">{<\/span> <span class=\"o\">*<\/span><span class=\"n\">Resolver<\/span> <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\">eventResolver<\/span><span class=\"p\">)<\/span> <span class=\"n\">ID<\/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\">Event<\/span><span class=\"p\">)<\/span> <span class=\"p\">(<\/span><span class=\"kt\">string<\/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=\"s\">\"not implemented\"<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">func<\/span> <span class=\"p\">(<\/span><span class=\"n\">r<\/span> <span class=\"o\">*<\/span><span class=\"n\">eventResolver<\/span><span class=\"p\">)<\/span> <span class=\"n\">UserID<\/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\">Event<\/span><span class=\"p\">)<\/span> <span class=\"p\">(<\/span><span class=\"kt\">string<\/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=\"s\">\"not implemented\"<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">mutationResolver<\/span> <span class=\"k\">struct<\/span><span class=\"p\">{<\/span> <span class=\"o\">*<\/span><span class=\"n\">Resolver<\/span> <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\">mutationResolver<\/span><span class=\"p\">)<\/span> <span class=\"n\">CreateUser<\/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\">input<\/span> <span class=\"n\">gqlgen<\/span><span class=\"o\">.<\/span><span class=\"n\">CreateUserInput<\/span><span class=\"p\">)<\/span> <span class=\"p\">(<\/span><span class=\"o\">*<\/span><span class=\"n\">gqlgen<\/span><span class=\"o\">.<\/span><span class=\"n\">CreateUserPayload<\/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=\"s\">\"not implemented\"<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">func<\/span> <span class=\"p\">(<\/span><span class=\"n\">r<\/span> <span class=\"o\">*<\/span><span class=\"n\">mutationResolver<\/span><span class=\"p\">)<\/span> <span class=\"n\">CreateEvent<\/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\">input<\/span> <span class=\"n\">gqlgen<\/span><span class=\"o\">.<\/span><span class=\"n\">CreateEventInput<\/span><span class=\"p\">)<\/span> <span class=\"p\">(<\/span><span class=\"o\">*<\/span><span class=\"n\">gqlgen<\/span><span class=\"o\">.<\/span><span class=\"n\">CreateEventPayload<\/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=\"s\">\"not implemented\"<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">queryResolver<\/span> <span class=\"k\">struct<\/span><span class=\"p\">{<\/span> <span class=\"o\">*<\/span><span class=\"n\">Resolver<\/span> <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\">Node<\/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=\"n\">gqlgen<\/span><span class=\"o\">.<\/span><span class=\"n\">Node<\/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=\"s\">\"not implemented\"<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/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\">User<\/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\">User<\/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=\"s\">\"not implemented\"<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/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\">Users<\/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\">first<\/span> <span class=\"kt\">int<\/span><span class=\"p\">,<\/span> <span class=\"n\">after<\/span> <span class=\"o\">*<\/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\">UserConnection<\/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=\"s\">\"not implemented\"<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">userResolver<\/span> <span class=\"k\">struct<\/span><span class=\"p\">{<\/span> <span class=\"o\">*<\/span><span class=\"n\">Resolver<\/span> <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\">userResolver<\/span><span class=\"p\">)<\/span> <span class=\"n\">ID<\/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\">User<\/span><span class=\"p\">)<\/span> <span class=\"p\">(<\/span><span class=\"kt\">string<\/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=\"s\">\"not implemented\"<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">func<\/span> <span class=\"p\">(<\/span><span class=\"n\">r<\/span> <span class=\"o\">*<\/span><span class=\"n\">userResolver<\/span><span class=\"p\">)<\/span> <span class=\"n\">Events<\/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\">User<\/span><span class=\"p\">,<\/span> <span class=\"n\">first<\/span> <span class=\"kt\">int<\/span><span class=\"p\">,<\/span> <span class=\"n\">after<\/span> <span class=\"o\">*<\/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\">EventConnection<\/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=\"s\">\"not implemented\"<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<\/code><\/pre>\n<p>\u4f7f\u7528\u521a\u521a\u521b\u5efa\u7684GetUsers\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u6309\u4ee5\u4e0b\u65b9\u5f0f\u6765\u5b9e\u73b0Users\u89e3\u6790\u5668\u3002<\/p>\n<pre class=\"post-pre\"><code>\r\n<span class=\"k\">type<\/span> <span class=\"n\">Resolver<\/span> <span class=\"k\">struct<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">DatastoreClient<\/span> <span class=\"o\">*<\/span><span class=\"n\">datastore<\/span><span class=\"o\">.<\/span><span class=\"n\">Client<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"o\">...<\/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\">Users<\/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\">first<\/span> <span class=\"kt\">int<\/span><span class=\"p\">,<\/span> <span class=\"n\">after<\/span> <span class=\"o\">*<\/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\">UserConnection<\/span><span class=\"p\">,<\/span> <span class=\"kt\">error<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">var<\/span> <span class=\"n\">cursor<\/span> <span class=\"kt\">string<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">after<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">cursor<\/span> <span class=\"o\">=<\/span> <span class=\"o\">*<\/span><span class=\"n\">after<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"n\">userConnection<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">r<\/span><span class=\"o\">.<\/span><span class=\"n\">DatastoreClient<\/span><span class=\"o\">.<\/span><span class=\"n\">GetUsers<\/span><span class=\"p\">(<\/span><span class=\"n\">ctx<\/span><span class=\"p\">,<\/span> <span class=\"n\">first<\/span><span class=\"p\">,<\/span> <span class=\"n\">cursor<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"no\">nil<\/span><span class=\"p\">,<\/span> <span class=\"n\">xerrors<\/span><span class=\"o\">.<\/span><span class=\"n\">Errorf<\/span><span class=\"p\">(<\/span><span class=\"s\">\": %w\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">}<\/span>\r\n\r\n    <span class=\"k\">return<\/span> <span class=\"n\">userConnection<\/span><span class=\"p\">,<\/span> <span class=\"no\">nil<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h2>\u884c\u52a8<\/h2>\n<p>\u4ee5\u4e0b\u662f\u6211\u5011\u9032\u884c\u9a57\u8b49\u7684GIF\u5c55\u793a\uff0c\u82e5\u60a8\u60f3\u81ea\u884c\u78ba\u8a8d\u7684\u8a71\uff0c\u53ef\u4ee5\u5c07\u9019\u500b\u5be6\u4f5c\u514b\u9686\u4e0b\u4f86\uff0c\u90e8\u7f72\u5230\u60a8\u81ea\u5df1\u7684GCP\u9805\u76ee\u4e2d\uff0c\u4e26\u9032\u884c\u6e2c\u8a66\uff01<\/p>\n<p>\u4ee3\u7801\u5e93 j\u00ec)<\/p>\n<p>\u521b\u5efa\u7528\u6237 (Chuang jian yong hu)<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d8384913a08637a6b39a6\/85-0.gif\" alt=\"create_user.gif\" \/><\/div>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d8384913a08637a6b39a6\/86-0.gif\" alt=\"create_event.gif\" \/><\/div>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d8384913a08637a6b39a6\/87-0.gif\" alt=\"create_node.gif\" \/><\/div>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d8384913a08637a6b39a6\/88-0.gif\" alt=\"get_users.gif\" \/><\/div>\n<h1>\u603b\u7ed3<\/h1>\n<p>\u5c3d\u7ba1\u6211\u8fd8\u521a\u5f00\u59cb\u5b66\u4e60\uff0c\u4f46\u56e0\u4e3a\u5728\u65e5\u672c\u5f88\u5c11\u6709\u4eba\u8c08\u8bba\u8fd9\u4e2a\u8bdd\u9898\uff0c\u6240\u4ee5\u6211\u5e26\u7740\u4e00\u4e1d\u671f\u671b\u5199\u4e86\u8fd9\u7bc7\u6587\u7ae0\uff0c\u5e0c\u671b\u5982\u679c\u6211\u5199\u4e86\u6587\u7ae0\uff0c\u4f1a\u6709\u4eba\u4f1a\u5e2e\u5fd9\u3002<br \/>\n\u4e2a\u4eba\u8ba4\u4e3aGraphQL\u975e\u5e38\u597d\uff0c\u6240\u4ee5\u4eca\u540e\u6211\u8fd8\u60f3\u7528Go\u548cGraphQL\u7ee7\u7eed\u5f00\u53d1\u670d\u52a1\u5668\u5e94\u7528\u3002<\/p>\n<h1>\u8bf7\u53c2\u9605<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">https:\/\/github.com\/vvakame\/graphql-with-go-book<\/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\">https:\/\/www.oreilly.co.jp\/books\/9784873118932\/<\/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\">https:\/\/relay.dev\/<\/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\">https:\/\/facebook.github.io\/relay\/graphql\/connections.htm<\/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\">https:\/\/graphql.org\/<\/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\">https:\/\/cloud.google.com\/datastore\/docs\/concepts\/queries?hl=en<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">https:\/\/qiita.com\/wawoon\/items\/d00bd180dcac48a3068e<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd9\u7bc7\u6587\u7ae0\u662f2019\u5e74Go\u9644\u6b73\u672b\u65e5\u5386\u7b2c20\u5929\u7684\u6587\u7ae0\u3002 \u9996\u5148 \u5728\u5404\u79cd\u6587\u7ae0\u548c\u6d3b\u52a8\u7684\u6f14\u8bb2\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u542c\u5230\u5173\u4e8e\u5904\u7406 gR [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-48161","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>\u6211\u5728GAE\/Go\u4e2d\u5c1d\u8bd5\u4f7f\u7528\u7b26\u5408Relay\u89c4\u8303\u7684GraphQL - 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\" 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