GraphQL：未知指令包括

Posted 2023-03-08

【中文标题】GraphQL：未知指令包括

【英文标题】：GraphQL: Unknow directive include

【发布时间】：2021-02-07 13:52:23

【问题描述】：

我正在练习在 Nodejs 中使用带有 Graphql 的指令。在 Playground 中我想使用 @include 指令时，Graphql 客户端告诉我：“未知指令包含”。这是我的代码：

query getChar($id: ID!, $withGames: Boolean!) 
  getCharacter(_id: $id) 
    _id
    name
    race
    games @include(if: $withGames) 
      _id
      title
    
    image
  

在我的查询变量中：

  "id": "5f945a7b24c84f35ecfae633",
  "withGames": false

但我收到以下错误：

  "error": 
    "errors": [
      
        "message": "Unknown directive \"@include\".",
        "locations": [
          
            "line": 6,
            "column": 11
          
        ],
        "extensions": 
          "code": "GRAPHQL_VALIDATION_FAILED",
          "exception": 
            "stacktrace": [
              "GraphQLError: Unknown directive \"@include\".",
              "    at Object.Directive (C:\\Users\\MSI\\projects\\Graphql\\cursobasico\\node_modules\\graphql\\validation\\rules\\KnownDirectivesRule.js:56:29)",
              "    at Object.enter (C:\\Users\\MSI\\projects\\Graphql\\cursobasico\\node_modules\\graphql\\language\\visitor.js:323:29)",
              "    at Object.enter (C:\\Users\\MSI\\projects\\Graphql\\cursobasico\\node_modules\\graphql\\utilities\\TypeInfo.js:370:25)",
              "    at visit (C:\\Users\\MSI\\projects\\Graphql\\cursobasico\\node_modules\\graphql\\language\\visitor.js:243:26)",
              "    at Object.validate (C:\\Users\\MSI\\projects\\Graphql\\cursobasico\\node_modules\\graphql\\validation\\validate.js:69:24)",
              "    at validate (C:\\Users\\MSI\\projects\\Graphql\\cursobasico\\node_modules\\apollo-server-core\\src\\requestPipeline.ts:510:14)",
              "    at Object.<anonymous> (C:\\Users\\MSI\\projects\\Graphql\\cursobasico\\node_modules\\apollo-server-core\\src\\requestPipeline.ts:296:32)",
              "    at Generator.next (<anonymous>)",
              "    at fulfilled (C:\\Users\\MSI\\projects\\Graphql\\cursobasico\\node_modules\\apollo-server-core\\dist\\requestPipeline.js:5:58)",
              "    at processTicksAndRejections (internal/process/task_queues.js:97:5)"
            ]
          
        
      
    ]
  

我做错了什么？

【参考方案1】：

It was a version problem of the graphql-tools。检查node_modules/graphql-tools/package.json 文件，我发现我使用的是版本4。我发现here 版本4 的指令存在问题，建议使用版本5。这就是我所做的：

npm i graphql-tools@5.0.0

我重新启动了服务器并刷新了Playground page，瞧，我已经有了@include 指令和所有其他可用的指令。