{"id":47577,"date":"2022-12-26T23:04:42","date_gmt":"2023-03-14T12:26:08","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8rails%e5%92%8cgraphql%e5%88%9b%e5%bb%baapi\/"},"modified":"2024-04-29T07:06:17","modified_gmt":"2024-04-28T23:06:17","slug":"%e4%bd%bf%e7%94%a8rails%e5%92%8cgraphql%e5%88%9b%e5%bb%baapi","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8rails%e5%92%8cgraphql%e5%88%9b%e5%bb%baapi\/","title":{"rendered":"\u4f7f\u7528Rails\u548cGraphQL\u521b\u5efaAPI"},"content":{"rendered":"

\u7248\u672c\u5dee\u5f02\u4e0d\u540c<\/h2>\n
ruby: 2.7.1\r\nrails: 6.0.3.4\r\ngraphql-ruby: 1.11.6\r\n<\/code><\/pre>\n
GraphQL Ruby (GraphQL-\u7684Ruby\u5b9e\u73b0)<\/h2>\n
\u516c\u5f0f\u7f51\u9875<\/p>\n
\u5982\u679c\u5728Rails\u4e2d\u4f7f\u7528GraphQL\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4e0a\u8ff0\u7684gem\u6765\u5b9e\u73b0API\u3002<\/p>\n
\u56fe\u5f62\u754c\u9762\u67e5\u8be2(GraphiQL)\u662f\u4e00\u4e2a\u7528\u4e8eRuby on Rails\u6846\u67b6\u7684\u63d2\u4ef6\u3002<\/h3>\n
\u5982\u679c\u5b89\u88c5\u4e0a graphiql-rails gem\uff0c\u5c31\u53ef\u4ee5\u5728\u6d4f\u89c8\u5668\u4e0a\u4f7f\u7528\u4e00\u4e2a\u53ef\u4ee5\u68c0\u67e5\u5df2\u5b9e\u65bd\u7684GraphQL\u7684IDE\u3002\u5728\u5b89\u88c5 graphql-ruby \u65f6\uff0c\u4f1a\u81ea\u52a8\u5c06 graphiql-rails gem \u6dfb\u52a0\u5230 Gemfile \u4e2d\u3002<\/p>\n
\"graphiql-rails\"<\/div>\n
\u73af\u5883\u642d\u5efa<\/h3>\n
\n
gem<\/span> 'graphql'<\/span>\r\ngem<\/span> 'graphiql-rails'<\/span> # \u4eca\u56de\u306f\u5148\u306b\u5165\u308c\u307e\u3057\u305f<\/span>\r\n<\/code><\/pre>\n
\u5f53Gem\u5b89\u88c5\u5b8c\u6210\u540e\uff0c\u6267\u884crails generate graphql:install\u547d\u4ee4\u6765\u751f\u6210\u5404\u4e2a\u6587\u4ef6\u3002
\n\u751f\u6210\u7684\u6587\u4ef6\u5982\u4e0b\u6240\u793a\u2193<\/p>\n
$ <\/span>rails generate graphql:install\r\n      create  app\/graphql\/types\r\n      create  app\/graphql\/types\/.keep\r\n      create  app\/graphql\/app_schema.rb\r\n      create  app\/graphql\/types\/base_object.rb\r\n      create  app\/graphql\/types\/base_argument.rb\r\n      create  app\/graphql\/types\/base_field.rb\r\n      create  app\/graphql\/types\/base_enum.rb\r\n      create  app\/graphql\/types\/base_input_object.rb\r\n      create  app\/graphql\/types\/base_interface.rb\r\n      create  app\/graphql\/types\/base_scalar.rb\r\n      create  app\/graphql\/types\/base_union.rb\r\n      create  app\/graphql\/types\/query_type.rb\r\nadd_root_type  query\r\n      create  app\/graphql\/mutations\r\n      create  app\/graphql\/mutations\/.keep\r\n      create  app\/graphql\/mutations\/base_mutation.rb\r\n      create  app\/graphql\/types\/mutation_type.rb\r\nadd_root_type  mutation\r\n      create  app\/controllers\/graphql_controller.rb\r\n       route  post \"\/graphql\"<\/span>, to: \"graphql#execute\"<\/span>\r\n     gemfile  graphiql-rails\r\n       route  graphiql-rails\r\n<\/code><\/pre>\n
\u5728\u6b64\u65f6\u70b9\u7684 routes.rb \u6587\u4ef6\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
Rails<\/span>.<\/span>application<\/span>.<\/span>routes<\/span>.<\/span>draw<\/span> do<\/span>\r\n\r\n  # GraphQL<\/span>\r\n  if<\/span> Rails<\/span>.<\/span>env<\/span>.<\/span>development?<\/span>\r\n    mount<\/span> GraphiQL<\/span>::<\/span>Rails<\/span>::<\/span>Engine<\/span>,<\/span> at: <\/span>'\/graphiql'<\/span>,<\/span> graphql_path: <\/span>'\/graphql'<\/span>\r\n  end<\/span>\r\n\r\n  post<\/span> '\/graphql'<\/span>,<\/span> to: <\/span>'graphql#execute'<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
\u505a\u5b9e<\/h3>\n
\n
\u8bf7\u521b\u5efa\u67e5\u8be2<\/h4>\n
\u9996\u5148\uff0c\u9700\u8981\u5b9a\u4e49\u4e0e\u6bcf\u4e2a\u8868\u5bf9\u5e94\u7684\u7c7b\u578b\uff0c\u6240\u4ee5\u6211\u60f3\u8981\u521b\u5efa\u4e00\u4e2a\u4e0e\u4ee5\u4e0b\u793a\u4f8b\u7528\u6237\u8868\uff08users\uff09\u5bf9\u5e94\u7684\u7528\u6237\u7c7b\u578b\uff08user_type\uff09\u3002<\/p>\n
create_table :users do |t|\r\n  t.string :name, null: false\r\n  t.string :email\r\n  t.timestamps\r\nend\r\n<\/code><\/pre>\n
\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\u5c06\u521b\u5efauser_type\u3002
\n\uff08\u6307\u5b9a\u7c7b\u578b\u662f\u4e3aGraphQL\u5b9a\u4e49\u7684\u7528\u4e8eID\u7684\u7c7b\u578b\uff08\u5b9e\u9645\u4e0a\u662f\u5b57\u7b26\u4e32\uff09
\n\u540c\u65f6\uff0c\u4ee5\uff01\u7ed3\u5c3e\u7684\u7c7b\u578b\u4e0d\u5141\u8bb8\u4e3a\u7a7a\uff0c\u800c\u6ca1\u6709\uff01\u7684\u7c7b\u578b\u5141\u8bb8\u4e3a\u7a7a\u3002\uff09<\/p>\n
$ <\/span>bundle exec <\/span>rails g graphql:object User id<\/span>:ID! name:String! email:String\r\n<\/code><\/pre>\n
\u5982\u679c\u6570\u636e\u5e93\u4e2d\u5df2\u7ecf\u5b58\u5728\u8be5\u8868\uff0c\u90a3\u4e48\u5b83\u4f3c\u4e4e\u4f1a\u5e2e\u6211\u4eec\u8865\u5145\u5b8c\u6210\u3002<\/p>\n
$ <\/span>bundle exec <\/span>rails g graphql:object User\r\n<\/code><\/pre>\n
\u2191\u8fd9\u6837\u4e5f\u6ca1\u95ee\u9898<\/p>\n
\u751f\u6210\u7684\u6587\u4ef6 graphql\/type\/user_type.rb \u7684\u5185\u5bb9\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
module<\/span> Types<\/span>\r\n  class<\/span> UserType<\/span> <<\/span> Types<\/span>::<\/span>BaseObject<\/span>\r\n    field<\/span> :id<\/span>,<\/span> ID<\/span>,<\/span> null: <\/span>false<\/span>\r\n    field<\/span> :name<\/span>,<\/span> String<\/span>,<\/span> null: <\/span>false<\/span>\r\n    field<\/span> :email<\/span>,<\/span> String<\/span>,<\/span> null: <\/span>true<\/span>\r\n    field<\/span> :created_at<\/span>,<\/span> GraphQL<\/span>::<\/span>Types<\/span>::<\/span>ISO8601DateTime<\/span>,<\/span> null: <\/span>false<\/span>\r\n    field<\/span> :updated_at<\/span>,<\/span> GraphQL<\/span>::<\/span>Types<\/span>::<\/span>ISO8601DateTime<\/span>,<\/span> null: <\/span>false<\/span>\r\n  end<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
\u6211\u5c06\u4ee5\u4e0b\u5185\u5bb9\u6dfb\u52a0\u5230\u5df2\u7ecf\u751f\u6210\u7684 graphql\/type\/query_type.rb \u6587\u4ef6\u4e2d\u3002<\/p>\n
    field<\/span> :users<\/span>,<\/span> [<\/span>Types<\/span>::<\/span>UserType<\/span>],<\/span> null: <\/span>false<\/span>\r\n    def<\/span> users<\/span>\r\n      User<\/span>.<\/span>all<\/span>\r\n    end<\/span>\r\n<\/code><\/pre>\n
\u6211\u8ba4\u4e3a\u5f53\u60a8\u5728 http:\/\/localhost:3000\/graphiql \u4e0a\u63d0\u51fa\u4ee5\u4e0b\u67e5\u8be2\u65f6\uff0c\u5c06\u8fd4\u56de\u54cd\u5e94\u3002<\/p>\n
{<\/span>\r\n  users<\/span> {<\/span>\r\n    id<\/span>\r\n    name<\/span>\r\n    email<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u521b\u5efa\u53d8\u5f02<\/h4>\n
\u63a5\u4e0b\u6765\uff0c\u6211\u60f3\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a “CreateUser” \u7684Mutations\u4ee5\u4fbf\u521b\u5efa\u7528\u6237\u3002<\/p>\n
$ <\/span>bundle exec <\/span>rails g graphql:mutation CreateUser\r\n<\/code><\/pre>\n
\u7531\u4e8e\u521b\u5efa\u4e86graphql\/mutations\/create_user.rb\uff0c\u56e0\u6b64\u5c06\u6839\u636e\u4ee5\u4e0b\u65b9\u5f0f\u8fdb\u884c\u4fee\u6539\u3002<\/p>\n
module<\/span> Mutations<\/span>\r\n  class<\/span> CreateUser<\/span> <<\/span> BaseMutation<\/span>\r\n    field<\/span> :user<\/span>,<\/span> Types<\/span>::<\/span>UserType<\/span>,<\/span> null: <\/span>true<\/span>\r\n\r\n    argument<\/span> :name<\/span>,<\/span> String<\/span>,<\/span> required: <\/span>true<\/span>\r\n    argument<\/span> :email<\/span>,<\/span> String<\/span>,<\/span> required: <\/span>false<\/span>\r\n\r\n    def<\/span> resolve<\/span>(<\/span>**<\/span>args<\/span>)<\/span>\r\n      user<\/span> =<\/span> User<\/span>.<\/span>create!<\/span>(<\/span>args<\/span>)<\/span>\r\n      {<\/span>\r\n        user: <\/span>user<\/span>\r\n      }<\/span>\r\n    end<\/span>\r\n  end<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
\u6211\u4f1a\u5411\u5df2\u7ecf\u751f\u6210\u7684graphql\/types\/mutation_type.rb\u6587\u4ef6\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u5185\u5bb9\u3002<\/p>\n
module<\/span> Types<\/span>\r\n  class<\/span> MutationType<\/span> <<\/span> Types<\/span>::<\/span>BaseObject<\/span>\r\n    field<\/span> :createUser<\/span>,<\/span> mutation: <\/span>Mutations<\/span>::<\/span>CreateUser<\/span> # \u8ffd\u8a18<\/span>\r\n  end<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
\u5f53\u5728 http:\/\/localhost:3000\/graphiql \u4e0a\u6267\u884c\u4ee5\u4e0b\u64cd\u4f5c\u65f6\uff0c\u5c06\u4f1a\u521b\u5efa\u4e00\u4e2a\u540d\u4e3aUser\u7684\u5bf9\u8c61\u3002<\/p>\n
mutation<\/span> {<\/span>\r\n  createUser<\/span>(<\/span>\r\n    input<\/span>:{<\/span>\r\n      name<\/span>:<\/span> \"user\"<\/span>\r\n      email<\/span>:<\/span> \"user@email.com\"<\/span>\r\n    }<\/span>\r\n  ){<\/span>\r\n    user<\/span> {<\/span>\r\n      id<\/span>\r\n      name<\/span> \r\n      email<\/span>\r\n    }<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u534f\u4f1a<\/h4>\n
    1:1\u306e\u95a2\u9023\u30c6\u30fc\u30d6\u30eb\u306e\u5834\u5408<\/ul>\n
    \u5982\u679c\u5c06\u5e16\u5b50\u4e0e\u6807\u7b7e\u8fdb\u884c\u4e00\u5bf9\u4e00\u7684\u5173\u8054\u7684\u8bdd\uff0c\u53ef\u4ee5\u4e3e\u4f8b\u5982\u4e0b\u3002<\/p>\n
    module<\/span> Types<\/span>\r\n  class<\/span> LabelType<\/span> <<\/span> Types<\/span>::<\/span>BaseObject<\/span>\r\n    field<\/span> :id<\/span>,<\/span> ID<\/span>,<\/span> null: <\/span>false<\/span>\r\n    field<\/span> :name<\/span>,<\/span> String<\/span>,<\/span> null: <\/span>false<\/span>\r\n    ...<\/span>\r\n  end<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
    module<\/span> Types<\/span>\r\n  class<\/span> PostType<\/span> <<\/span> Types<\/span>::<\/span>BaseObject<\/span>\r\n    field<\/span> :label<\/span>,<\/span> LabelType<\/span>,<\/span> null: <\/span>true<\/span>\r\n  end<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
    \u53ef\u4ee5\u5c06label\u5b9a\u4e49\u4e3aLabelType\uff0c\u5c31\u50cf\u4e0a\u9762\u7684\u4f8b\u5b50\u90a3\u6837\u3002
    \n\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u5c06\u67e5\u8be2\u56fe\u50cf\u60f3\u8c61\u6210…<\/p>\n
    {<\/span>\r\n  posts<\/span> {<\/span>\r\n    id<\/span>\r\n    label<\/span> {<\/span>\r\n      id<\/span>\r\n      name<\/span>\r\n    }<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
    \u60a8\u53ef\u4ee5\u4f7f\u7528\u67e5\u8be2\u5c06\u6807\u7b7e(label)\u4f5c\u4e3aLabelType\u83b7\u53d6\u6240\u9700\u7684\u503c\u3002<\/p>\n
      1:N\u306e\u95a2\u9023\u30c6\u30fc\u30d6\u30eb\u306e\u5834\u5408<\/ul>\n
      \u5047\u8bbe\u7528\u6237\u4e0e\u5e16\u5b50\u662f\u4e00\u5bf9\u591a\u7684\u5173\u7cfb<\/p>\n
      module<\/span> Types<\/span>\r\n  class<\/span> PostType<\/span> <<\/span> Types<\/span>::<\/span>BaseObject<\/span>\r\n    field<\/span> :id<\/span>,<\/span> ID<\/span>,<\/span> null: <\/span>false<\/span>\r\n    field<\/span> :label<\/span>,<\/span> LabelType<\/span>,<\/span> null: <\/span>true<\/span>\r\n  end<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
      module<\/span> Types<\/span>\r\n  class<\/span> UserType<\/span> <<\/span> Types<\/span>::<\/span>BaseObject<\/span>\r\n    field<\/span> :posts<\/span>,<\/span> [<\/span>PostType<\/span>],<\/span> null: <\/span>false<\/span>\r\n  end<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
      \u53ef\u4ee5\u5c06\u4e0a\u8ff0\u7684\u5e16\u5b50\u5b9a\u4e49\u4e3a[\u5e16\u5b50\u7c7b\u578b]\uff0c\u5e76\u4e14\u53ef\u4ee5\u4f5c\u4e3a\u67e5\u8be2<\/p>\n
      {<\/span>\r\n  user<\/span>(<\/span>id<\/span>:<\/span> 1234<\/span>)<\/span> {<\/span>\r\n    id<\/span>\r\n    posts<\/span> {<\/span>\r\n      id<\/span>\r\n      label<\/span> {<\/span>\r\n        id<\/span>\r\n        name<\/span>\r\n      }<\/span>\r\n    }<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
      \u53ef\u4ee5\u5982\u4e0a\u6240\u8ff0\u8fdb\u884c\u8c03\u7528\u3002<\/p>\n
      GraphQL\u6279\u5904\u7406<\/h4>\n
      \u6839\u636e\u4e0a\u8ff0\u8bf4\u660e\uff0c\u53ef\u4ee5\u63d0\u53d61:1\u62161:N\u5173\u8054\u8868\u7684\u6570\u636e\uff0c\u4f46\u5f53\u524d\u60c5\u51b5\u4e0b\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5927\u91cf\u5411\u6570\u636e\u5e93\u53d1\u51fa\u67e5\u8be2\u8bf7\u6c42\u3002\u4ee5User\u548cPost\u76841:N\u5173\u7cfb\u4e3a\u4f8b\uff0c\u5982\u679c\u6709100\u6761Post\uff0c\u90a3\u4e48\u6bcf\u6761\u90fd\u4f1a\u53d1\u8d77100\u6b21\u67e5\u8be2\u8bf7\u6c42\u3002<\/p>\n
      \u56e0\u6b64\uff0c\u6211\u5011\u5c07\u8a66\u8457\u5f15\u5165\u4e00\u7a2e\u89e3\u6c7a\u65b9\u6cd5\uff0c\u5373\u4f7f\u7528 graphql-batch \u4f86\u5c07\u591a\u500b\u8acb\u6c42\u6574\u5408\u5728\u4e00\u8d77\u3002<\/p>\n
      gem<\/span> 'graphql-batch'<\/span>\r\n<\/code><\/pre>\n
      \u5f53\u5b89\u88c5\u4e86Gem\u4e4b\u540e\uff0c\u6211\u4eec\u5c06\u5f00\u59cb\u521b\u5efaloader\u3002
      \nloader\u5c06\u7528\u4e8e\u5b9e\u73b0\u201c\u5c06\u591a\u4e2a\u67e5\u8be2\u6574\u5408\u5728\u4e00\u8d77\u201d\u7684\u90e8\u5206\u3002<\/p>\n
      module<\/span> Loaders<\/span>\r\n  class<\/span> RecordLoader<\/span> <<\/span> GraphQL<\/span>::<\/span>Batch<\/span>::<\/span>Loader<\/span>\r\n    def<\/span> initialize<\/span>(<\/span>model<\/span>)<\/span>\r\n      @model<\/span> =<\/span> model<\/span>\r\n    end<\/span>\r\n\r\n    def<\/span> perform<\/span>(<\/span>ids<\/span>)<\/span>\r\n      @model<\/span>.<\/span>where<\/span>(<\/span>id: <\/span>ids<\/span>).<\/span>each<\/span> {<\/span> |<\/span>record<\/span>|<\/span> fulfill<\/span>(<\/span>record<\/span>.<\/span>id<\/span>,<\/span> record<\/span>)<\/span> }<\/span>\r\n      ids<\/span>.<\/span>each<\/span> {<\/span> |<\/span>id<\/span>|<\/span> fulfill<\/span>(<\/span>id<\/span>,<\/span> nil<\/span>)<\/span> unless<\/span> fulfilled?<\/span>(<\/span>id<\/span>)<\/span> }<\/span>\r\n    end<\/span>\r\n  end<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
      \u5982\u679c\u8fd9\u4e2a\u8d34\u5b50\u4e0e\u4e4b\u524d\u7684\u5e16\u5b50\u662f\u4e00\u5bf9\u4e00\u7684\u5173\u8054\u7684\u8bdd\uff0c\u90a3\u4e48\u5c31\u9002\u7528\u4e8e\u5b83\u3002<\/p>\n
      module<\/span> Types<\/span>\r\n  class<\/span> PostType<\/span> <<\/span> Types<\/span>::<\/span>BaseObject<\/span>\r\n    field<\/span> :label<\/span>,<\/span> LabelType<\/span>,<\/span> null: <\/span>true<\/span>\r\n    def<\/span> label<\/span>\r\n      Loaders<\/span>::<\/span>RecordLoader<\/span>.<\/span>for<\/span>(<\/span>Label<\/span>).<\/span>load<\/span>(<\/span>object<\/span>.<\/span>label_id<\/span>)<\/span>\r\n    end<\/span>\r\n  end<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
      \u5728\u7528\u6237\u4e0e\u5e16\u5b50\u4e4b\u95f4\u662f\u4e00\u5bf9\u591a\u7684\u5173\u7cfb\u65f6\uff0c\u9700\u8981\u5355\u72ec\u521b\u5efa\u4e00\u4e2aloader\u3002<\/p>\n
      module<\/span> Loaders<\/span>\r\n  class<\/span> AssociationLoader<\/span> <<\/span> GraphQL<\/span>::<\/span>Batch<\/span>::<\/span>Loader<\/span>\r\n    def<\/span> self<\/span>.<\/span>validate<\/span>(<\/span>model<\/span>,<\/span> association_name<\/span>)<\/span>\r\n      new<\/span>(<\/span>model<\/span>,<\/span> association_name<\/span>)<\/span>\r\n      nil<\/span>\r\n    end<\/span>\r\n\r\n    def<\/span> initialize<\/span>(<\/span>model<\/span>,<\/span> association_name<\/span>)<\/span>\r\n      @model<\/span> =<\/span> model<\/span>\r\n      @association_name<\/span> =<\/span> association_name<\/span>\r\n      validate<\/span>\r\n    end<\/span>\r\n\r\n    def<\/span> load<\/span>(<\/span>record<\/span>)<\/span>\r\n      raise<\/span> TypeError<\/span>,<\/span> \"<\/span>#{<\/span>@model<\/span>}<\/span> loader can't load association for <\/span>#{<\/span>record<\/span>.<\/span>class<\/span>}<\/span>\"<\/span> unless<\/span> record<\/span>.<\/span>is_a?<\/span>(<\/span>@model<\/span>)<\/span>\r\n      return<\/span> Promise<\/span>.<\/span>resolve<\/span>(<\/span>read_association<\/span>(<\/span>record<\/span>))<\/span> if<\/span> association_loaded?<\/span>(<\/span>record<\/span>)<\/span>\r\n      super<\/span>\r\n    end<\/span>\r\n\r\n    # We want to load the associations on all records, even if they have the same id<\/span>\r\n    def<\/span> cache_key<\/span>(<\/span>record<\/span>)<\/span>\r\n      record<\/span>.<\/span>object_id<\/span>\r\n    end<\/span>\r\n\r\n    def<\/span> perform<\/span>(<\/span>records<\/span>)<\/span>\r\n      preload_association<\/span>(<\/span>records<\/span>)<\/span>\r\n      records<\/span>.<\/span>each<\/span> {<\/span> |<\/span>record<\/span>|<\/span> fulfill<\/span>(<\/span>record<\/span>,<\/span> read_association<\/span>(<\/span>record<\/span>))<\/span> }<\/span>\r\n    end<\/span>\r\n\r\n    private<\/span>\r\n\r\n    def<\/span> validate<\/span>\r\n      unless<\/span> @model<\/span>.<\/span>reflect_on_association<\/span>(<\/span>@association_name<\/span>)<\/span>\r\n        raise<\/span> ArgumentError<\/span>,<\/span> \"No association <\/span>#{<\/span>@association_name<\/span>}<\/span> on <\/span>#{<\/span>@model<\/span>}<\/span>\"<\/span>\r\n      end<\/span>\r\n    end<\/span>\r\n\r\n    def<\/span> preload_association<\/span>(<\/span>records<\/span>)<\/span>\r\n      ::<\/span>ActiveRecord<\/span>::<\/span>Associations<\/span>::<\/span>Preloader<\/span>.<\/span>new<\/span>.<\/span>preload<\/span>(<\/span>records<\/span>,<\/span> @association_name<\/span>)<\/span>\r\n    end<\/span>\r\n\r\n    def<\/span> read_association<\/span>(<\/span>record<\/span>)<\/span>\r\n      record<\/span>.<\/span>public_send<\/span>(<\/span>@association_name<\/span>)<\/span>\r\n    end<\/span>\r\n\r\n    def<\/span> association_loaded?<\/span>(<\/span>record<\/span>)<\/span>\r\n      record<\/span>.<\/span>association<\/span>(<\/span>@association_name<\/span>).<\/span>loaded?<\/span>\r\n    end<\/span>\r\n  end<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
      \u7531\u4e8egraphql-batch\u7684\u5b58\u50a8\u5e93\u4e2d\u6709\u793a\u4f8b\uff0c\u8bf7\u53c2\u8003\u8be5\u793a\u4f8b\u8fdb\u884c\u5b9e\u73b0\uff0c\u8fd9\u6837\u505a\u53ef\u80fd\u66f4\u597d\u3002<\/p>\n
      \u6309\u7167\u4ee5\u4e0b\u7684\u65b9\u6cd5\u5199\uff0c\u53ef\u4ee5\u4e00\u6b21\u6027\u8fdb\u884c\u67e5\u8be2\u3002<\/p>\n
      module<\/span> Types<\/span>\r\n  class<\/span> UserType<\/span> <<\/span> Types<\/span>::<\/span>BaseObject<\/span>\r\n    field<\/span> :posts<\/span>,<\/span> [<\/span>PostType<\/span>],<\/span> null: <\/span>false<\/span>\r\n    def<\/span> posts<\/span>\r\n      Loaders<\/span>::<\/span>AssociationLoader<\/span>.<\/span>for<\/span>(<\/span>User<\/span>,<\/span> :posts<\/span>).<\/span>load<\/span>(<\/span>object<\/span>)<\/span>\r\n    end<\/span>\r\n  end<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
      \u4ece\u67b6\u6784\u6587\u4ef6\u751f\u6210\u6587\u4ef6\u3002<\/h4>\n
      \u6211\u60f3\u5c1d\u8bd5\u4ece\u6700\u540e\u5b9a\u4e49\u7684\u67b6\u6784\u6587\u4ef6\u4e2d\u81ea\u52a8\u751f\u6210\u6f02\u4eae\u7684\u6587\u6863\u3002<\/p>\n
      \u627e\u5230\u4e00\u4e2a\u65b9\u4fbf\u7684gem\u53eb\u505agraphdoc-ruby\uff0c\u6211\u4f1a\u8bd5\u7740\u5b89\u88c5\u5b83\uff0c\u5728routes.rb\u4e2d\u6302\u8f7d\u5b83\uff0c\u5e76\u5b9e\u73b0\u81ea\u52a8\u66f4\u65b0graphdoc\u6bcf\u6b21\u90e8\u7f72\u3002<\/p>\n
      \u8bf7\u5728Gemfile\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u5185\u5bb9<\/p>\n
      gem<\/span> 'graphdoc-ruby'<\/span>\r\n<\/code><\/pre>\n
      \u53e6\u5916\uff0c\u7531\u4e8e\u6211\u4eec\u8fd8\u9700\u8981 npm \u5305 @2fd\/graphdoc\uff0c\u8bf7\u63d0\u524d\u5728 Docker \u955c\u50cf\u4e2d\u8fdb\u884c\u5b89\u88c5\u3002(\u5982\u679c\u6ca1\u6709\u4f7f\u7528 Docker\uff0c\u8bf7\u5728\u672c\u5730\u73af\u5883\u4e2d\u8fdb\u884c\u5b89\u88c5\u5373\u53ef)<\/p>\n
      \u8fd9\u4e2a\u623f\u5b50\u975e\u5e38\u6f02\u4eae\u3002<\/p>\n
      RUN <\/span>set<\/span> -ex<\/span> \\\r\n<\/span>    &&<\/span> wget -qO-<\/span> https:\/\/deb.nodesource.com\/setup_10.x | bash - \\\r\n<\/span>    &&<\/span> apt-get update \\\r\n<\/span>    &&<\/span> apt-get install<\/span> -y<\/span> \\\r\n<\/span>                 ...\r\n                 --no-install-recommends \\\r\n    && rm -rf \/var\/lib\/apt\/lists\/* \\\r\n    && npm install -g yarn \\\r\n    && npm install -g @2fd\/graphdoc # \u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3068\u304f<\/span>\r\n<\/code><\/pre>\n
      \u5728config\/routes.rb\u6587\u4ef6\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u5185\u5bb9<\/p>\n
      Rails<\/span>.<\/span>application<\/span>.<\/span>routes<\/span>.<\/span>draw<\/span> do<\/span>\r\n  mount<\/span> GraphdocRuby<\/span>::<\/span>Application<\/span>,<\/span> at: <\/span>'graphdoc'<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
      \u5982\u679c\u66f4\u6539\u4e86\u7aef\u70b9\uff0c\u8bf7\u4fee\u6539config\/initializers\/graphdoc.rb\u3002<\/p>\n
      \u8fd9\u95f4\u9910\u5385\u7684\u98df\u7269\u975e\u5e38\u7f8e\u5473\u3002<\/p>\n
      GraphdocRuby<\/span>.<\/span>configure<\/span> do<\/span> |<\/span>config<\/span>|<\/span>\r\n  config<\/span>.<\/span>endpoint<\/span> =<\/span> 'http:\/\/0.0.0.0:3000\/api\/v1\/graphql'<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
      \u53ea\u9700\u91cd\u542fRails\uff0c\u7136\u540e\u5728http:\/\/localhost:3000\/graphdoc\u5904\u751f\u6210\u6587\u6863\u5373\u53ef\u3002<\/p>\n
      \"graphdoc\"<\/div>\n
      \u574f\u7684\u6280\u5de7<\/h3>\n
      \n
      http:\/\/localhost:3000\/graphiql \u30a2\u30af\u30bb\u30b9\u6642\u306b\u4ee5\u4e0b\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u5834\u5408<\/p>\n
      Sprockets::Rails::Helper::AssetNotPrecompiled in GraphiQL::Rails::Editors#show<\/p>\n
      \u89e3\u6c7a\u65b9\u6cd51<\/p>\n
      app\/assets\/config\/manifest.js \u306b\u4ee5\u4e0b\u3092\u8ffd\u52a0\u3059\u308b<\/p>\n
      \/\/= link graphiql\/rails\/application.css
      \n\/\/= link graphiql\/rails\/application.js<\/p>\n
      AssetNotPrecompiled error with Sprockets 4.0 \u00b7 Issue #75 \u00b7 rmosolgo\/graphiql-rails
      \n-> \u305f\u3060\u3053\u308c\u3060\u3068Production\u6642\u306b Sprockets::FileNotFound: couldn’t find file ‘graphiql\/rails\/application.css’ \u30a8\u30e9\u30fc\u304c\u51fa\u3066\u4f7f\u3048\u306a\u3044…<\/p>\n
      \u89e3\u6c7a\u65b9\u6cd52 \uff08\u3046\u307e\u304f\u3044\u3063\u305f\u65b9\u6cd5\uff09<\/p>\n
      gem ‘sprocket’\u306e\u30d0\u30fc\u30b8\u30e7\u30f33.7.2\u306b\u4e0b\u3052\u308b<\/p>\n
      gem ‘sprockets’, ‘~> 3.7.2’ [#1098: slowdev\/knowledge\/ios\/Firebase\u3092Carthage\u3067\u8ffd\u52a0\u3059\u308b](\/posts\/1098)<\/p>\n
      \u2191\u3092\u8ffd\u52a0\u3057\u3001bundle update
      \nRails6\u306eAPI\u30e2\u30fc\u30c9\u3067GraphQL\u3092\u4f7f\u3046\u65b9\u6cd5(\u30a8\u30e9\u30fc\u5bfe\u7b56\u3082\u542b\u3080) – Qiita<\/p>\n
      graphiql\u306e\u753b\u9762\u306bTypeError: Cannot read property ‘types’ of undefined \u304c\u8868\u793a\u3055\u308c\u308b
      \n-> \u624b\u5143\u306e\u74b0\u5883\u3060\u3068Rails\u518d\u8d77\u52d5\u3067\u6cbb\u308a\u307e\u3057\u305f
      \ngraphiql\u306e\u753b\u9762\u306bSyntaxError: Unexpected token < in JSON at position 0 \u304c\u8868\u793a\u3055\u308c\u308b -> \u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u3066\u308b\u53ef\u80fd\u6027\u304c\u308b\u306e\u3067\u30ed\u30b0\u3092\u898b\u3066\u4fee\u6b63\u3059\u308b<\/p>\n
      \u6709\u7528\u7684\u7f51\u7ad9\u94fe\u63a5<\/h3>\n
      \n
        \n
      • \n
          \u3010Rails\u3011graphql-ruby\u3067API\u3092\u4f5c\u6210 – Qiita<\/ul>\n<\/li>\n<\/ul>\n
           <\/p>\n
            \n
          • \n
              REST API\u304c\u4e3b\u6d41\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u4e2d\u3067GraphQL\u3092\u5c0e\u5165\u3057\u3066\u307f\u305f\u8a71\uff08\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u7de8\uff09 – Sansan Builders Blog<\/ul>\n<\/li>\n<\/ul>\n
               <\/p>\n
                \n
              • \n
                  \u300cGraphQL\u300d\u5fb9\u5e95\u5165\u9580 \u2500 REST\u3068\u306e\u6bd4\u8f03\u3001API\u30fb\u30d5\u30ed\u30f3\u30c8\u53cc\u65b9\u306e\u5b9f\u88c5\u304b\u3089\u5b66\u3076 – \u30a8\u30f3\u30b8\u30cb\u30a2Hub\uff5c\u82e5\u624bWeb\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u30ad\u30e3\u30ea\u30a2\u3092\u8003\u3048\u308b\uff01<\/ul>\n<\/li>\n<\/ul>\n
                   <\/p>\n
                    \n
                  • \n
                      GraphQL\u3092\u4f7f\u3063\u305fAPI\u4ed5\u69d8\u4e2d\u5fc3\u958b\u767a\u306e\u5c0e\u5165\u3068\u305d\u306e\u52b9\u679c\u306e\u7d39\u4ecb – Kaizen Platform \u958b\u767a\u8005\u30d6\u30ed\u30b0<\/ul>\n<\/li>\n<\/ul>\n
                       <\/p>\n
                        \n
                      • \n
                          \u96d1\u306b\u59cb\u3081\u308b GraphQL Ruby\u3010class-based API\u3011 – Qiita<\/ul>\n<\/li>\n<\/ul>\n
                           <\/p>\n
                            \n
                          • \n
                              hawksnowlog: Ruby (Sinatra) \u3067 GraphQL \u5165\u9580<\/ul>\n<\/li>\n<\/ul>\n
                               <\/p>\n
                                \n
                              • \n
                                  \u65e2\u5b58\u306eRails\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306bGraphQL API\u3092\u8ffd\u52a0\u3057\u3066\u307f\u305f – Qiita<\/ul>\n<\/li>\n<\/ul>\n
                                   <\/p>\n
                                    \n
                                  • \n
                                      Ruby on Rails \u3067 sprockets \u304b\u3089 Webpacker \u3078\u79fb\u884c\u3057\u3001\u79fb\u884c\u3067\u304d\u306a\u3044\u3082\u306e\u306f\u5171\u5b58\u3055\u305b\u308b\u65b9\u6cd5 – Qiita<\/ul>\n<\/li>\n<\/ul>\n
                                       <\/p>\n
                                        \n
                                      • \n
                                          Reading: \u521d\u3081\u3066GraphQL – \u578b\u306e\u57fa\u790e\uff5ctkhm\uff5cnote<\/ul>\n<\/li>\n<\/ul>\n
                                           <\/p>\n
                                            \n
                                          • \n
                                              https:\/\/github.com\/loopstudio\/rails-graphql-api-boilerplate<\/ul>\n<\/li>\n<\/ul>\n
                                               <\/p>\n
                                                https:\/\/github.com\/rmosolgo\/graphql-ruby-demo<\/ul>\n","protected":false},"excerpt":{"rendered":"
                                                \u7248\u672c\u5dee\u5f02\u4e0d\u540c ruby: 2.7.1 rails: 6.0.3.4 graphql-ruby: 1.11.6  […]<\/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-47577","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n\u4f7f\u7528Rails\u548cGraphQL\u521b\u5efaAPI - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528rails\u548cgraphql\u521b\u5efaapi\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u4f7f\u7528Rails\u548cGraphQL\u521b\u5efaAPI\" \/>\n<meta property=\"og:description\" content=\"\u7248\u672c\u5dee\u5f02\u4e0d\u540c ruby: 2.7.1 rails: 6.0.3.4 graphql-ruby: 1.11.6 […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528rails\u548cgraphql\u521b\u5efaapi\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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