{"id":47525,"date":"2022-11-18T20:37:11","date_gmt":"2023-09-28T22:17:50","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8ruby-on-rails%e5%ad%a6%e4%b9%a0graphql%ef%bc%88graphql-ruby%ef%bc%89%e7%9a%84%e5%85%a5%e9%97%a8%e5%a4%87%e5%bf%98%e5%bd%95%e3%80%82\/"},"modified":"2024-04-29T01:19:42","modified_gmt":"2024-04-28T17:19:42","slug":"%e4%bd%bf%e7%94%a8ruby-on-rails%e5%ad%a6%e4%b9%a0graphql%ef%bc%88graphql-ruby%ef%bc%89%e7%9a%84%e5%85%a5%e9%97%a8%e5%a4%87%e5%bf%98%e5%bd%95%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8ruby-on-rails%e5%ad%a6%e4%b9%a0graphql%ef%bc%88graphql-ruby%ef%bc%89%e7%9a%84%e5%85%a5%e9%97%a8%e5%a4%87%e5%bf%98%e5%bd%95%e3%80%82\/","title":{"rendered":"\u4f7f\u7528Ruby on Rails\u5b66\u4e60GraphQL\uff08graphql-ruby\uff09\u7684\u5165\u95e8\u5907\u5fd8\u5f55"},"content":{"rendered":"<h1>\u9996\u5148<\/h1>\n<p>\u6211\u7528Ruby on Rails\u5c1d\u8bd5\u4e86\u4e00\u4e0bGraphQL\uff0c\u5e76\u5199\u4e86\u4e00\u7bc7\u5907\u5fd8\u5f55\u3002<\/p>\n<p>\u73af\u5883\u5982\u4e0b\u6240\u793a\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">ruby: 3.0.2<\/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\">rails: 6.1.4<\/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-ruby: 1.12<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">graphiql-rails: 1.8.0<\/ul>\n<h1>GraphQL \u662f\u4e00\u79cd\u67e5\u8be2\u8bed\u8a00\u548c\u8fd0\u884c\u65f6\u73af\u5883\uff0c\u7528\u4e8e\u4ece\u5ba2\u6237\u7aef\u5411\u670d\u52a1\u5668\u8bf7\u6c42\u548c\u54cd\u5e94\u6570\u636e\u3002<\/h1>\n<p>GraphQL\u662f\u4e00\u79cd\u7528\u4e8eAPI\u7684\u67e5\u8be2\u8bed\u8a00\uff0c\u4e0eREST API\u4e0d\u540c\uff0c\u5177\u6709\u4ee5\u4e0b\u4f18\u70b9\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">1\u3064\u306e\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u306e\u307f\u3067\u547c\u3073\u51fa\u305b\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u6b32\u3057\u3044\u60c5\u5831\u306e\u307f\u3092\u6307\u5b9a\u3067\u304d\u3001\u4f59\u5206\u306a\u3082\u306e\u3092\u53d6\u5f97\u3057\u306a\u3044<\/ul>\n<h1>\u5b89\u88c5<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">graphql-ruby<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">graphiql-rails<\/ul>\n<p>\u6211\u4eec\u5c06\u53c2\u8003\u8fd9\u4e2a\u8fdb\u884c\u5728Rails\u4e2d\u5f15\u5165GraphQL\u548cGraphiQL\u3002<br \/>\n\u901a\u8fc7\u5f15\u5165GraphiQL\uff0c\u60a8\u53ef\u4ee5\u5728\u5f00\u53d1\u73af\u5883\u4e2d\u4f7f\u7528\u56fe\u5f62\u754c\u9762\u6765\u786e\u8ba4\u548c\u6267\u884cGraphQL\u7684\u67e5\u8be2\u548c\u53d8\u66f4\u8bbe\u7f6e\uff0c\u4ee5\u8fdb\u884c\u6d4b\u8bd5\u3002<br \/>\n\u5b83\u7c7b\u4f3c\u4e8ephpMyAdmin\u7684GraphQL\u7248\u672c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">gem<\/span> <span class=\"s1\">'graphql'<\/span>\r\n<span class=\"n\">group<\/span> <span class=\"ss\">:development<\/span> <span class=\"k\">do<\/span>\r\n  <span class=\"n\">gem<\/span> <span class=\"s1\">'graphiql-rails'<\/span>\r\n<span class=\"k\">end<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code>bundle <span class=\"nb\">install\r\n<\/span>rails g graphql:install\r\n<\/code><\/pre>\n<p>\u5728\u4e2d\u6587\u4e2d\u53ea\u9700\u8981\u4e00\u4e2a\u9009\u9879\u6765\u6539\u5199\u4ee5\u4e0b\u5185\u5bb9\uff1a<br \/>\n\u8fdb\u884cGraphiQL\u7684\u8def\u7531\u8bbe\u7f6e\u3002<br \/>\n\u8fd9\u6837\uff0c\u60a8\u53ea\u80fd\u5728\u672c\u5730\u5f00\u53d1\u73af\u5883\u4e2d\u901a\u8fc7http:\/\/localhost:3000\/graphiql\u7b49URL\u8bbf\u95eeGraphiQL\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"no\">Rails<\/span><span class=\"p\">.<\/span><span class=\"nf\">application<\/span><span class=\"p\">.<\/span><span class=\"nf\">routes<\/span><span class=\"p\">.<\/span><span class=\"nf\">draw<\/span> <span class=\"k\">do<\/span>\r\n  <span class=\"n\">post<\/span> <span class=\"s2\">\"\/graphql\"<\/span><span class=\"p\">,<\/span> <span class=\"ss\">to: <\/span><span class=\"s2\">\"graphql#execute\"<\/span>\r\n  <span class=\"c1\"># \u4ee5\u4e0b\u3092\u8ffd\u52a0<\/span>\r\n  <span class=\"k\">if<\/span> <span class=\"no\">Rails<\/span><span class=\"p\">.<\/span><span class=\"nf\">env<\/span><span class=\"p\">.<\/span><span class=\"nf\">development?<\/span>\r\n    <span class=\"n\">mount<\/span> <span class=\"no\">GraphiQL<\/span><span class=\"o\">::<\/span><span class=\"no\">Rails<\/span><span class=\"o\">::<\/span><span class=\"no\">Engine<\/span><span class=\"p\">,<\/span> <span class=\"ss\">at: <\/span><span class=\"s1\">'\/graphiql'<\/span><span class=\"p\">,<\/span> <span class=\"ss\">graphql_path: <\/span><span class=\"s1\">'\/graphql'<\/span>\r\n  <span class=\"k\">end<\/span>\r\n<span class=\"k\">end<\/span>\r\n\r\n<\/code><\/pre>\n<h1>\u83b7\u53d6\u6570\u636e (Query)<\/h1>\n<p>\u4e3a\u4e86\u83b7\u53d6\u6570\u636e\uff0c\u9700\u8981\u5b9a\u4e49\u7c7b\u578b(Type)\u548c\u67e5\u8be2(Query)\u3002<\/p>\n<h2>Type\u7684\u5b9a\u4e49<\/h2>\n<p>Type\u7528\u4e8e\u5b9a\u4e49\u8fd4\u56de\u6570\u636e\u7684\u7ed3\u6784\u3002<br \/>\n\u5728\u751f\u6210\u7528\u4e8eType\u5b9a\u4e49\u7684\u6587\u4ef6\u4e4b\u524d\uff0c\u5148\u521b\u5efaRails\u6a21\u578b\u5e76\u6267\u884c\u8fc1\u79fb\uff0cType\u4f1a\u6839\u636e\u8be5\u6a21\u5f0f\u81ea\u52a8\u751f\u6210\u5b9a\u4e49\u3002<\/p>\n<pre class=\"post-pre\"><code>rails g model User\r\n<span class=\"c\"># migration\u306e\u8a2d\u5b9a<\/span>\r\nrails db:migrate\r\nrails g graphql:object User\r\n<\/code><\/pre>\n<p>\u6587\u4ef6\u88ab\u521b\u5efa\uff0c\u4f8b\u5982\u4f1a\u751f\u6210\u4ee5\u4e0b\u7c7b\u4f3c\u7684\u4ee3\u7801\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">module<\/span> <span class=\"nn\">Types<\/span>\r\n  <span class=\"k\">class<\/span> <span class=\"nc\">UserType<\/span> <span class=\"o\">&lt;<\/span> <span class=\"no\">Types<\/span><span class=\"o\">::<\/span><span class=\"no\">BaseObject<\/span>\r\n    <span class=\"n\">field<\/span> <span class=\"ss\">:id<\/span><span class=\"p\">,<\/span> <span class=\"no\">ID<\/span><span class=\"p\">,<\/span> <span class=\"ss\">null: <\/span><span class=\"kp\">false<\/span>\r\n    <span class=\"n\">field<\/span> <span class=\"ss\">:email<\/span><span class=\"p\">,<\/span> <span class=\"no\">String<\/span><span class=\"p\">,<\/span> <span class=\"ss\">null: <\/span><span class=\"kp\">false<\/span>\r\n    <span class=\"n\">field<\/span> <span class=\"ss\">:encrypted_password<\/span><span class=\"p\">,<\/span> <span class=\"no\">String<\/span><span class=\"p\">,<\/span> <span class=\"ss\">null: <\/span><span class=\"kp\">false<\/span>\r\n    <span class=\"n\">field<\/span> <span class=\"ss\">:created_at<\/span><span class=\"p\">,<\/span> <span class=\"no\">GraphQL<\/span><span class=\"o\">::<\/span><span class=\"no\">Types<\/span><span class=\"o\">::<\/span><span class=\"no\">ISO8601DateTime<\/span><span class=\"p\">,<\/span> <span class=\"ss\">null: <\/span><span class=\"kp\">false<\/span>\r\n    <span class=\"n\">field<\/span> <span class=\"ss\">:updated_at<\/span><span class=\"p\">,<\/span> <span class=\"no\">GraphQL<\/span><span class=\"o\">::<\/span><span class=\"no\">Types<\/span><span class=\"o\">::<\/span><span class=\"no\">ISO8601DateTime<\/span><span class=\"p\">,<\/span> <span class=\"ss\">null: <\/span><span class=\"kp\">false<\/span>\r\n  <span class=\"k\">end<\/span>\r\n<span class=\"k\">end<\/span>\r\n\r\n<\/code><\/pre>\n<p>\u7136\u800c\uff0cType\u662f\u7528\u4e8e\u5b9a\u4e49\u8fd4\u56de\u54cd\u5e94\u6570\u636e\u7ed3\u6784\u7684\u3002\u5b83\u4e0d\u9700\u8981\u4e0e\u6570\u636e\u5e93\u8868\u7ed3\u6784\u5339\u914d\uff0c\u60a8\u53ef\u4ee5\u81ea\u7531\u5730\u6dfb\u52a0\u6216\u5220\u9664\u5b57\u6bb5\u3002<br \/>\n\u50cf\u5bc6\u7801\u4e4b\u7c7b\u7684\u4e0d\u5e94\u8be5\u653e\u5728API\u4e2d\u7684\u654f\u611f\u4fe1\u606f\uff0c\u6700\u597d\u662f\u5220\u9664\u76f8\u5173\u5b57\u6bb5\u3002<\/p>\n<h2>\u67e5\u8be2\u7684\u5b9a\u4e49<\/h2>\n<p>\u6211\u4eec\u5c06\u4f7f\u7528Query\u6765\u5b9a\u4e49\u5982\u4f55\u83b7\u53d6\u4fe1\u606f\u3002<br \/>\nQuery\u7684\u5b9a\u4e49\u5c06\u5199\u5728app\/graphql\/types\/query_type.rb\u4e2d\u3002<br \/>\n\u4f8b\u5982\uff0c\u53ef\u4ee5\u7f16\u5199\u67e5\u8be2\u4ee5\u83b7\u53d6\u6240\u6709\u7528\u6237\u6216\u83b7\u53d6\u6307\u5b9aID\u7684\u7528\u6237\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">module<\/span> <span class=\"nn\">Types<\/span>\r\n  <span class=\"k\">class<\/span> <span class=\"nc\">QueryType<\/span> <span class=\"o\">&lt;<\/span> <span class=\"no\">Types<\/span><span class=\"o\">::<\/span><span class=\"no\">BaseObject<\/span>\r\n    <span class=\"n\">field<\/span> <span class=\"ss\">:users<\/span><span class=\"p\">,<\/span> <span class=\"p\">[<\/span><span class=\"no\">UserType<\/span><span class=\"p\">],<\/span> <span class=\"ss\">null: <\/span><span class=\"kp\">false<\/span>\r\n    <span class=\"k\">def<\/span> <span class=\"nf\">users<\/span>\r\n      <span class=\"no\">User<\/span><span class=\"p\">.<\/span><span class=\"nf\">all<\/span>\r\n    <span class=\"k\">end<\/span>\r\n\r\n    <span class=\"n\">field<\/span> <span class=\"ss\">:user<\/span><span class=\"p\">,<\/span> <span class=\"no\">UserType<\/span><span class=\"p\">,<\/span> <span class=\"ss\">null: <\/span><span class=\"kp\">false<\/span> <span class=\"k\">do<\/span>\r\n      <span class=\"n\">argument<\/span> <span class=\"ss\">:id<\/span><span class=\"p\">,<\/span> <span class=\"no\">ID<\/span><span class=\"p\">,<\/span> <span class=\"ss\">required: <\/span><span class=\"kp\">true<\/span>\r\n    <span class=\"k\">end<\/span>\r\n    <span class=\"k\">def<\/span> <span class=\"nf\">user<\/span><span class=\"p\">(<\/span><span class=\"nb\">id<\/span><span class=\"p\">:)<\/span>\r\n      <span class=\"no\">User<\/span><span class=\"p\">.<\/span><span class=\"nf\">find<\/span><span class=\"p\">(<\/span><span class=\"nb\">id<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"k\">end<\/span>\r\n  <span class=\"k\">end<\/span>\r\n<span class=\"k\">end<\/span>\r\n\r\n<\/code><\/pre>\n<h2>\u5c1d\u8bd5\u4f7f\u7528GraphiQL\u83b7\u53d6\u6570\u636e<\/h2>\n<p>\u8bbf\u95eeGraphiQL\u9875\u9762\uff0c\u5c06\u4ee5\u4e0b\u5185\u5bb9\u8f93\u5165\u5230\u5de6\u4fa7\u7684\u8f93\u5165\u6846\u4e2d\uff0c\u7136\u540e\u70b9\u51fb\u64ad\u653e\u6309\u94ae\u9009\u62e9\u67e5\u8be2\uff0c\u7ed3\u679c\u5c06\u663e\u793a\u5728\u53f3\u4fa7\u7684\u6846\u4e2d\u3002<br \/>\n\u5728\u5b9a\u4e49\u65f6\uff0c\u5b57\u6bb5\u540d\u79f0\u4f7f\u7528snake_case\u8fdb\u884c\u7f16\u5199\uff0c\u4f46\u5728\u8c03\u7528API\u65f6\uff0c\u8bf7\u4f7f\u7528camelCase\u8fdb\u884c\u7f16\u5199\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">query<\/span> <span class=\"n\">users<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"n\">users<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">id<\/span>\r\n    <span class=\"n\">email<\/span>\r\n    <span class=\"n\">createdAt<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">query<\/span> <span class=\"n\">user1<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"n\">user<\/span><span class=\"p\">(<\/span><span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"mi\">1<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">id<\/span>\r\n    <span class=\"n\">email<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">query<\/span> <span class=\"n\">user<\/span><span class=\"p\">(<\/span><span class=\"nv\">$id<\/span><span class=\"p\">:<\/span> <span class=\"nb\">ID<\/span><span class=\"p\">!)<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"n\">user<\/span><span class=\"p\">(<\/span><span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"nv\">$id<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">id<\/span>\r\n    <span class=\"n\">email<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"p\">{<\/span>\r\n  <span class=\"nl\">\"id\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"1\"<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u5728\u4e0b\u9762\u7684\u67e5\u8be2\u4e2d\uff0c\u5c06\u53c2\u6570\u5206\u5f00\u5199\u662f\u4e00\u79cd\u65b9\u5f0f\u3002<br \/>\n\u578b\u540d(ID!)\u540e\u9762\u7684!\u8868\u793a\u5b83\u662f\u4e00\u4e2a\u5fc5\u9700\u53c2\u6570\u3002<br \/>\n\uff08\u56e0\u4e3a\u5728\u67e5\u8be2\u5b9a\u4e49\u4e2d\u8bbe\u7f6e\u4e86argument :id, ID, required: true\uff09<br \/>\n\u6b64\u5916\uff0c\u53ef\u4ee5\u4ece\u53f3\u4e0a\u89d2\u7684Docs\u4e2d\u67e5\u770b\u67e5\u8be2\u3001\u53d8\u5f02\u548c\u7c7b\u578b\u7684\u5b9a\u4e49\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d7f13913a08637a6a55c6\/30-0.gif\" alt=\"41c85dc040331a98c0eaf281be2a9a48.gif\" \/><\/div>\n<h1>\u521b\u5efa\u3001\u7f16\u8f91\u3001\u5220\u9664\u6570\u636e\uff08Mutation\uff09<\/h1>\n<p>\u521b\u5efa\u3001\u7f16\u8f91\u3001\u5220\u9664\u6570\u636e\u7b49\u5177\u6709\u526f\u4f5c\u7528\u7684\u5904\u7406\u5c06\u5728Mutation\u4e2d\u5b9a\u4e49\u3002<br \/>\nmutation\u7684\u5b9a\u4e49\u5e94\u8be5\u5199\u5728app\/graphql\/types\/mutation_type.rb\u4e2d\u3002<br \/>\n\u4f46\u662f\uff0c\u901a\u8fc7\u547d\u4ee4\u751f\u6210mutation\u540e\uff0cmutation_type.rb\u6587\u4ef6\u5c06\u81ea\u52a8\u6dfb\u52a0\u4ee3\u7801\uff0c\u5b9e\u9645\u7f16\u8f91\u7684\u6587\u4ef6\u5c06\u662f\u5404\u4e2amutation\u5b9a\u4e49\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code>rails g graphql:mutation CreateUser\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"k\">module<\/span> <span class=\"nn\">Types<\/span>\r\n  <span class=\"k\">class<\/span> <span class=\"nc\">MutationType<\/span> <span class=\"o\">&lt;<\/span> <span class=\"no\">Types<\/span><span class=\"o\">::<\/span><span class=\"no\">BaseObject<\/span>\r\n    <span class=\"n\">field<\/span> <span class=\"ss\">:create_user<\/span><span class=\"p\">,<\/span> <span class=\"ss\">mutation: <\/span><span class=\"no\">Mutations<\/span><span class=\"o\">::<\/span><span class=\"no\">CreateUser<\/span> <span class=\"c1\"># \u81ea\u52d5\u3067\u8ffd\u8a18\u3055\u308c\u308b<\/span>\r\n    <span class=\"c1\"># ~<\/span>\r\n  <span class=\"k\">end<\/span>\r\n<span class=\"k\">end<\/span>\r\n\r\n<\/code><\/pre>\n<p>\u6211\u4eec\u5c06\u5982\u4e0b\u5b9a\u4e49mutation\uff1a<br \/>\n\u4f7f\u7528field\u5b9a\u4e49\u54cd\u5e94\u3001argument\u5b9a\u4e49\u53c2\u6570\uff0c\u4f7f\u7528resolve\u5b9a\u4e49\u5904\u7406\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">module<\/span> <span class=\"nn\">Mutations<\/span>\r\n  <span class=\"k\">class<\/span> <span class=\"nc\">CreateUser<\/span> <span class=\"o\">&lt;<\/span> <span class=\"no\">BaseMutation<\/span>\r\n    <span class=\"n\">field<\/span> <span class=\"ss\">:user<\/span><span class=\"p\">,<\/span> <span class=\"no\">Types<\/span><span class=\"o\">::<\/span><span class=\"no\">UserType<\/span><span class=\"p\">,<\/span> <span class=\"ss\">null: <\/span><span class=\"kp\">false<\/span>\r\n\r\n    <span class=\"n\">argument<\/span> <span class=\"ss\">:email<\/span><span class=\"p\">,<\/span>                 <span class=\"no\">String<\/span><span class=\"p\">,<\/span> <span class=\"ss\">required: <\/span><span class=\"kp\">true<\/span>\r\n    <span class=\"n\">argument<\/span> <span class=\"ss\">:password<\/span><span class=\"p\">,<\/span>              <span class=\"no\">String<\/span><span class=\"p\">,<\/span> <span class=\"ss\">required: <\/span><span class=\"kp\">true<\/span>\r\n    <span class=\"n\">argument<\/span> <span class=\"ss\">:password_confirmation<\/span><span class=\"p\">,<\/span> <span class=\"no\">String<\/span><span class=\"p\">,<\/span> <span class=\"ss\">required: <\/span><span class=\"kp\">true<\/span>\r\n\r\n    <span class=\"k\">def<\/span> <span class=\"nf\">resolve<\/span><span class=\"p\">(<\/span><span class=\"o\">**<\/span><span class=\"n\">args<\/span><span class=\"p\">)<\/span>\r\n      <span class=\"n\">user<\/span> <span class=\"o\">=<\/span> <span class=\"no\">User<\/span><span class=\"p\">.<\/span><span class=\"nf\">create!<\/span><span class=\"p\">(<\/span><span class=\"n\">args<\/span><span class=\"p\">)<\/span>\r\n      <span class=\"p\">{<\/span> <span class=\"ss\">user: <\/span><span class=\"n\">user<\/span> <span class=\"p\">}<\/span>\r\n    <span class=\"k\">end<\/span>\r\n  <span class=\"k\">end<\/span>\r\n<span class=\"k\">end<\/span>\r\n\r\n<\/code><\/pre>\n<h2>\u8bd5\u7740\u4f7f\u7528GrapiQL\u521b\u5efa\u6570\u636e\u3002<\/h2>\n<p>\u901a\u8fc7\u8c03\u7528mutation\uff0c\u53ef\u4ee5\u8fdb\u884c\u4ee5\u4e0b\u64cd\u4f5c\u3002<br \/>\n\u4e0e\u6570\u636e\u83b7\u53d6\u64cd\u4f5c\u4e0d\u540c\u7684\u662f\uff0cmutation\u4ee5createUser()\u5f00\u5934\uff0c\u4f46\u662fcreateUser(email: ~)\u53d8\u4e3a\u4e86createUser(input:{email: ~})\u7684\u7ed3\u6784\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">mutation<\/span> <span class=\"n\">createUser<\/span><span class=\"p\">(<\/span><span class=\"nv\">$email<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!,<\/span> <span class=\"nv\">$password<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!,<\/span> <span class=\"nv\">$passwordConfirmation<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!)<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"n\">createUser<\/span><span class=\"p\">(<\/span>\r\n    <span class=\"n\">input<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span><span class=\"n\">email<\/span><span class=\"p\">:<\/span> <span class=\"nv\">$email<\/span><span class=\"p\">,<\/span> <span class=\"n\">password<\/span><span class=\"p\">:<\/span> <span class=\"nv\">$password<\/span><span class=\"p\">,<\/span> <span class=\"n\">passwordConfirmation<\/span><span class=\"p\">:<\/span> <span class=\"nv\">$passwordConfirmation<\/span><span class=\"p\">}<\/span>\r\n  <span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">user<\/span> <span class=\"p\">{<\/span>\r\n      <span class=\"n\">id<\/span>\r\n      <span class=\"n\">email<\/span>\r\n    <span class=\"p\">}<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"p\">{<\/span>\r\n  <span class=\"nl\">\"email\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"test2@example.com\"<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"nl\">\"password\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"abc123\"<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"nl\">\"passwordConfirmation\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"abc123\"<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h2>\u7f16\u8f91\u548c\u5220\u9664<\/h2>\n<p>\u53ea\u9700\u6309\u7167\u6570\u636e\u521b\u5efa\u65f6\u7684\u65b9\u6cd5\u521b\u5efa\u53d8\u5f02\u5373\u53ef\u8fdb\u884c\u7f16\u8f91\u6216\u5220\u9664\u3002<\/p>\n<h1>\u5176\u4ed6<\/h1>\n<h2>\u8054\u60f3<\/h2>\n<p>\u5982\u679c\u7528\u6237\u62e5\u6709\u591a\u4e2a\u4efb\u52a1\u6570\u636e\uff0c\u4e14\u60f3\u8981\u540c\u65f6\u83b7\u53d6\u7528\u6237\u4fe1\u606f\u548c\u7528\u6237\u62e5\u6709\u7684\u4efb\u52a1\u7684\u65b9\u6cd5\u3002<\/p>\n<p>\u6211\u4f1a\u521b\u5efa\u4e00\u4e2a\u540d\u4e3aTask\u7684\u6a21\u578b\uff0c\u5e76\u6267\u884c\u8fc1\u79fb\u548c\u521b\u5efa\u7c7b\u578b\uff0c\u540c\u65f6\u8bbe\u7f6e\u6a21\u578b\u7684\u5173\u8054\uff08\u7528\u6237\u6a21\u578b\u548c\u4efb\u52a1\u6a21\u578b\uff09\u3002\u53ea\u9700\u5728\u7528\u6237\u7c7b\u578b\u7684\u5b9a\u4e49\u4e2d\u6dfb\u52a0tasks\u5b57\u6bb5\u5373\u53ef\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">module<\/span> <span class=\"nn\">Types<\/span>\r\n  <span class=\"k\">class<\/span> <span class=\"nc\">UserType<\/span> <span class=\"o\">&lt;<\/span> <span class=\"no\">Types<\/span><span class=\"o\">::<\/span><span class=\"no\">BaseObject<\/span>\r\n    <span class=\"c1\"># ~<\/span>\r\n    <span class=\"n\">field<\/span> <span class=\"ss\">:tasks<\/span><span class=\"p\">,<\/span> <span class=\"p\">[<\/span><span class=\"no\">TaskType<\/span><span class=\"p\">],<\/span> <span class=\"ss\">null: <\/span><span class=\"kp\">false<\/span>\r\n  <span class=\"k\">end<\/span>\r\n<span class=\"k\">end<\/span>\r\n<\/code><\/pre>\n<p>\u8fd9\u6837\u4e00\u6765\uff0c\u76f8\u5173\u6a21\u578b\u7684\u4fe1\u606f\u4e5f\u80fd\u4e00\u6b21\u6027\u83b7\u53d6\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">query<\/span> <span class=\"n\">user1<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"n\">user<\/span><span class=\"p\">(<\/span><span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"mi\">1<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">id<\/span>\r\n    <span class=\"n\">email<\/span>\r\n    <span class=\"n\">tasks<\/span> <span class=\"p\">{<\/span>\r\n      <span class=\"n\">id<\/span>\r\n    <span class=\"p\">}<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h2>\u5173\u8054\u6a21\u578b\u4e2a\u6570\u7684\u5b57\u6bb5\u6dfb\u52a0\uff0c\u5173\u4e8eN+1\u95ee\u9898\u3002<\/h2>\n<p>\u5f53\u9700\u8981\u83b7\u53d6\u7528\u6237\u62e5\u6709\u7684\u4efb\u52a1\u6570\u91cf\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\u3002<\/p>\n<h3>\u9009\u98791: \u5c06&#8221;\u53d6\u5f97\u65b9\u6cd5&#8221;\u5305\u62ec\u5728Type\u5b9a\u4e49\u4e2d\u7684\u65b9\u6cd5<\/h3>\n<p>\u53ef\u4ee5\u5728 object \u4e0a\u7f16\u5199\u5bf9\u6a21\u578b\u5b9e\u4f8b\u7684\u5904\u7406\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">module<\/span> <span class=\"nn\">Types<\/span>\r\n  <span class=\"k\">class<\/span> <span class=\"nc\">UserType<\/span> <span class=\"o\">&lt;<\/span> <span class=\"no\">Types<\/span><span class=\"o\">::<\/span><span class=\"no\">BaseObject<\/span>\r\n    <span class=\"c1\"># ~<\/span>\r\n    <span class=\"n\">field<\/span> <span class=\"ss\">:tasks_count<\/span><span class=\"p\">,<\/span> <span class=\"no\">Int<\/span><span class=\"p\">,<\/span> <span class=\"ss\">null: <\/span><span class=\"kp\">false<\/span>\r\n    <span class=\"k\">def<\/span> <span class=\"nf\">tasks_count<\/span>\r\n      <span class=\"n\">object<\/span><span class=\"p\">.<\/span><span class=\"nf\">tasks<\/span><span class=\"p\">.<\/span><span class=\"nf\">size<\/span>\r\n    <span class=\"k\">end<\/span>\r\n  <span class=\"k\">end<\/span>\r\n<span class=\"k\">end<\/span>\r\n\r\n<\/code><\/pre>\n<p>\u4e3a\u4e86\u907f\u514dN+1\u95ee\u9898\uff0c\u5728\u67e5\u8be2\u5b9a\u4e49\u7684\u90e8\u5206\u8981\u5305\u542b(:tasks)\u3002<br \/>\n\u5373\u4f7f\u5305\u542b\u4e86\uff0c\u5982\u679c\u5728Type\u5b9a\u4e49\u4e2d\u4f7f\u7528object.tasks.count\uff0c\u4ecd\u7136\u4f1a\u5bfc\u81f4N+1\u95ee\u9898\u7684\u53d1\u751f\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">module<\/span> <span class=\"nn\">Types<\/span>\r\n  <span class=\"k\">class<\/span> <span class=\"nc\">QueryType<\/span> <span class=\"o\">&lt;<\/span> <span class=\"no\">Types<\/span><span class=\"o\">::<\/span><span class=\"no\">BaseObject<\/span>\r\n    <span class=\"c1\"># ~<\/span>\r\n    <span class=\"n\">field<\/span> <span class=\"ss\">:users<\/span><span class=\"p\">,<\/span> <span class=\"p\">[<\/span><span class=\"no\">UserType<\/span><span class=\"p\">],<\/span> <span class=\"ss\">null: <\/span><span class=\"kp\">false<\/span>\r\n    <span class=\"k\">def<\/span> <span class=\"nf\">users<\/span>\r\n      <span class=\"no\">User<\/span><span class=\"p\">.<\/span><span class=\"nf\">includes<\/span><span class=\"p\">(<\/span><span class=\"ss\">:tasks<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"k\">end<\/span>\r\n    <span class=\"c1\"># ~<\/span>\r\n  <span class=\"k\">end<\/span>\r\n<span class=\"k\">end<\/span>\r\n\r\n<\/code><\/pre>\n<h3>\u9009\u98792\uff1a\u5728\u67e5\u8be2\u7684\u5b9a\u4e49\u4e2d\u83b7\u53d6\u7684\u65b9\u6cd5\u3002<\/h3>\n<pre class=\"post-pre\"><code><span class=\"k\">module<\/span> <span class=\"nn\">Types<\/span>\r\n  <span class=\"k\">class<\/span> <span class=\"nc\">UserType<\/span> <span class=\"o\">&lt;<\/span> <span class=\"no\">Types<\/span><span class=\"o\">::<\/span><span class=\"no\">BaseObject<\/span>\r\n    <span class=\"c1\"># ~<\/span>\r\n    <span class=\"n\">field<\/span> <span class=\"ss\">:tasks_count<\/span><span class=\"p\">,<\/span> <span class=\"no\">Int<\/span><span class=\"p\">,<\/span> <span class=\"ss\">null: <\/span><span class=\"kp\">false<\/span>\r\n  <span class=\"k\">end<\/span>\r\n<span class=\"k\">end<\/span>\r\n\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"k\">module<\/span> <span class=\"nn\">Types<\/span>\r\n  <span class=\"k\">class<\/span> <span class=\"nc\">QueryType<\/span> <span class=\"o\">&lt;<\/span> <span class=\"no\">Types<\/span><span class=\"o\">::<\/span><span class=\"no\">BaseObject<\/span>\r\n    <span class=\"c1\"># ~<\/span>\r\n    <span class=\"n\">field<\/span> <span class=\"ss\">:users<\/span><span class=\"p\">,<\/span> <span class=\"p\">[<\/span><span class=\"no\">UserType<\/span><span class=\"p\">],<\/span> <span class=\"ss\">null: <\/span><span class=\"kp\">false<\/span>\r\n    <span class=\"k\">def<\/span> <span class=\"nf\">users<\/span>\r\n      <span class=\"no\">User<\/span><span class=\"p\">.<\/span><span class=\"nf\">select<\/span><span class=\"p\">(<\/span><span class=\"sx\">%|\r\n        *,\r\n        (SELECT COUNT (*) FROM tasks t\r\n          WHERE t.user_id = users.id\r\n        ) AS tasks_count\r\n      |<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"k\">end<\/span>\r\n    <span class=\"c1\"># ~<\/span>\r\n  <span class=\"k\">end<\/span>\r\n<span class=\"k\">end<\/span>\r\n\r\n<\/code><\/pre>\n<p>\u5c3d\u7ba1\u6211\u66f4\u559c\u6b22\u8fd9\u79cd\u751f\u6210\u7684SQL\u8bed\u53e5\uff0c\u5e76\u4e14\u6027\u80fd\u53ef\u80fd\u66f4\u597d\uff0c\u4f46\u662f\u8001\u5b9e\u8bf4\uff0c\u8003\u8651\u5230\u53ef\u8bfb\u6027\u4ee5\u53ca\u9700\u8981\u9488\u5bf9\u6bcf\u4e2a\u67e5\u8be2\u548c\u53d8\u5f02\u5206\u522b\u7f16\u5199\uff0c\u6211\u89c9\u5f97\u8fd9\u79cd\u65b9\u6cd5\u53ef\u80fd\u6709\u4e9b\u5fae\u5999\u3002<\/p>\n<h3>\u5176\u4ed6\u7684\u65b9\u6cd5 de<\/h3>\n<p>\u6211\u8fd8\u6ca1\u6709\u5c1d\u8bd5\u8fc7\uff0c\u4f46\u4f7f\u7528\u540d\u4e3agraphql-batch\u7684gem\u53ef\u4ee5\u66f4\u7075\u6d3b\u5730\u83b7\u53d6\u6570\u636e\uff0c\u800c\u4e0d\u4f1a\u51fa\u73b0N+1\u95ee\u9898\uff1f<\/p>\n<h2>\u4f1a\u8bdd\u3001\u5f53\u524d\u7528\u6237<\/h2>\n<p>\u5728Query\u6216Mutation\u7684\u5b9a\u4e49\u4e2d\uff0c\u4e0d\u80fd\u76f4\u63a5\u8c03\u7528\u50cfsession\u6216devise\u7684current_user\u8fd9\u6837\u7684\u8f85\u52a9\u65b9\u6cd5\u3002\u8981\u80fd\u591f\u8c03\u7528\u5b83\u4eec\uff0c\u9700\u8981\u5728GraphqlController\u4e2d\u8fdb\u884c\u8bbe\u7f6e\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">class<\/span> <span class=\"nc\">GraphqlController<\/span> <span class=\"o\">&lt;<\/span> <span class=\"no\">ApplicationController<\/span>\r\n  <span class=\"c1\"># ~<\/span>\r\n  <span class=\"k\">def<\/span> <span class=\"nf\">execute<\/span>\r\n    <span class=\"c1\"># ~<\/span>\r\n    <span class=\"n\">context<\/span> <span class=\"o\">=<\/span> <span class=\"p\">{<\/span>\r\n      <span class=\"ss\">session: <\/span><span class=\"n\">session<\/span><span class=\"p\">,<\/span>\r\n      <span class=\"ss\">current_user: <\/span><span class=\"n\">current_user<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"c1\"># ~<\/span>\r\n  <span class=\"k\">end<\/span>\r\n  <span class=\"c1\"># ~<\/span>\r\n<span class=\"k\">end<\/span>\r\n<\/code><\/pre>\n<p>\u8bbe\u5b9a\u5982\u4e0b\uff0c\u8fd9\u6837\u5728\u67e5\u8be2\u6216\u8005\u53d8\u66f4\u5185\u53ef\u4ee5\u901a\u8fc7\u8c03\u7528context[:session]\u6216\u8005context[:current_user]\u8fdb\u884c\u8c03\u7528\u3002<\/p>\n<h1>\u6700\u540e<\/h1>\n<p>\u8fd9\u6b21\u662f\u6211\u7b2c\u4e00\u6b21\u5c1d\u8bd5\u4f7f\u7528GraphQL\uff0c\u6211\u80fd\u591f\u8f7b\u677e\u5730\u5b9e\u73b0\u57fa\u672c\u7684\u6570\u636e\u83b7\u53d6\u3001\u521b\u5efa\u3001\u7f16\u8f91\u548c\u5220\u9664\u7b49\u529f\u80fd\u3002\u7136\u800c\uff0c\u5728\u89e3\u51b3N+1\u95ee\u9898\u4ee5\u53ca\u8ba4\u8bc1\u548c\u6388\u6743\u65b9\u9762\uff0c\u867d\u7136\u672c\u6b21\u6587\u7ae0\u6ca1\u6709\u5199\u5230\uff0c\u4f46\u6211\u5728\u5b9e\u8df5\u8fc7\u7a0b\u4e2d\u9047\u5230\u4e86\u8bb8\u591a\u56f0\u96be\u3002\u56e0\u4e3a\u6211\u4ecd\u7136\u5bf9\u8bb8\u591a\u65b9\u9762\u90fd\u6ca1\u6709\u5b8c\u5168\u7406\u89e3\uff0c\u6240\u4ee5\u6211\u5e0c\u671b\u80fd\u591f\u7ee7\u7eed\u5b66\u4e60GraphQL\u3002<\/p>\n<p>\u611f\u8c22\u60a8\u4e00\u76f4\u9605\u8bfb\u5230\u6700\u540e\u3002<\/p>\n<h1>\u6211\u53c2\u8003\u4e86\u90a3\u7bc7\u6587\u7ae0\u3002<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u5165\u9580 GraphQL Ruby \u301c\u57fa\u672c\u306eCRUD\u51e6\u7406\u301c<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u3010Rails\u3011graphql-ruby\u3067API\u3092\u4f5c\u6210<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u9996\u5148 \u6211\u7528Ruby on Rails\u5c1d\u8bd5\u4e86\u4e00\u4e0bGraphQL\uff0c\u5e76\u5199\u4e86\u4e00\u7bc7\u5907\u5fd8\u5f55\u3002 \u73af\u5883\u5982\u4e0b\u6240\u793a\u3002 ruby:  [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-47525","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\/ 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