GraphQL 错误字段类型必须是输入类型但得到:

IT技术 javascript graphql
2021-03-11 03:57:21

这是突变:

const createNotebook = mutationWithClientMutationId ({
    name: 'CreateNotebook',
    inputFields: {
        token: {
            type: GraphQLString,
        },

        details: {
            type: NotebookDetails,
        },
    },
    outputFields: {

    },
    async mutateCRNotebook(input, context) {
        const data = getJSONFromRelativeURL(input.token);

    },
});

这是突变的详细信息字段中使用的模式:

const NotebookDetails = new GraphQLObjectType({
    name: 'NotebookDetails',
    interfaces: [nodeInterface],

    fields: () => ({
        id: globalIdField('NotebookDetails'),

        description: {
            type: GraphQLString,
            description: '...',
            resolve(obj) {
                return obj.description;
            },
        },

        language: {
            type: GraphQLString,
            description: '...',
            resolve(obj) {
                return obj.language;
            },
        },

    }),

});

我开始运行此代码的错误是:

api_1    | Error: CreateNotebookInput.details field type must be Input Type but got: NotebookDetails.
api_1    |     at invariant (/usr/src/app/node_modules/graphql/jsutils/invariant.js:19:11)
api_1    |     at /usr/src/app/node_modules/graphql/type/definition.js:698:58
api_1    |     at Array.forEach (native)
api_1    |     at GraphQLInputObjectType._defineFieldMap (/usr/src/app/node_modules/graphql/type/definition.js:693:16)
api_1    |     at GraphQLInputObjectType.getFields (/usr/src/app/node_modules/graphql/type/definition.js:682:49)
api_1    |     at typeMapReducer (/usr/src/app/node_modules/graphql/type/schema.js:224:26)
api_1    |     at typeMapReducer (/usr/src/app/node_modules/graphql/type/schema.js:190:12)
api_1    |     at Array.reduce (native)
api_1    |     at /usr/src/app/node_modules/graphql/type/schema.js:217:36
api_1    |     at Array.forEach (native)
api_1    |     at typeMapReducer (/usr/src/app/node_modules/graphql/type/schema.js:210:27)
api_1    |     at Array.reduce (native)
api_1    |     at new GraphQLSchema (/usr/src/app/node_modules/graphql/type/schema.js:98:34)
api_1    |     at Object.<anonymous> (/usr/src/app/src/schema/index.js:39:16)
api_1    |     at Module._compile (module.js:569:30)
api_1    |     at Object.Module._extensions..js (module.js:580:10)

我在查询中使用了这种语法,并且它们工作正常。但是,他们通过突变返回错误。我的代码中有什么不正确的地方,我该如何更正?

4个回答

在 GraphQL 中,aninput不能用作 a type,atype不能用作input不幸的是,即使字段看起来与现有类型相同,您也始终必须定义单独的输入以用作参数。尝试这样的事情:

const NotebookDetailsInput = new GraphQLInputObjectType({
  name: 'NotebookDetailsInput',
  fields: () => ({
    id:          { type: GraphQLID },
    description: { type: GraphQLString },
    language:    { type: GraphQLString }, 
  })
});

如果使用 SDL,相同的类型将如下所示:

input {
  id: ID
  description: String
  language: String
}

请参阅此答案以详细解释为什么有必要这样做。

这让我花了太长时间才明白,但一旦你明白了,这似乎很“明显”!
2021-04-30 03:57:21

对于那些谁正在使用graphql-tools和蹒跚翻过这篇文章,文档是在这里,在GraphQL的网站。

使用graphQL工具我的例子是在这里如下:(这有一个输入的输入内部AKA的ImageInput内部SocialPostInput

//变异文件

extend type Mutation {
    SchedulePost ( 
        socialPost: SocialPostInput,
        schedule: ScheduleInput
     ): ScheduledPost
}`

//时间表和SocialPost文件

type Image {
    id: String
    url: String
}
type SocialPost {
    id: String
    GCID: String
    message: String
    image: Image
}
input ImageInput {
    url: String
}
input SocialPostInput {
    GCID: String
    message: String
    image: ImageInput
}
type Schedule {
    id: String
    month: Int
    date: Int
    hour: Int
    minute: Int
}
input ScheduleInput {
    id: String
    month: Int
    date: Int
    hour: Int
    minute: Int
}`

这是突变的详细信息字段中使用的模式

const NotebookDetails = new GraphQLObjectType({
    name: 'NotebookDetails',
    fields: () => ({
        id: { type: GraphQLID },
        description: { type: GraphQLString },
        language: { type: GraphQLString },

    }),

});

如果您在 schema.graphql 文件中描述架构,只需将类型替换为输入:

错误的:

type SomeData {
  someField: String!
}

对:

input SomeData {
  someField: String!
}