Question

我有

export const getPicture = {
    type: GraphPicture,
    args: {
        type: new GraphQLNonNull(GraphQLInt)
    },
    resolve(_, args) {
        return Picture.findByPrimary(args.id);
    }
};

export const getPictureList = {
    type: new GraphQLList(GraphPicture),
    resolve(_, __, session) {
        return Picture.findAll({where: {owner: session.userId}});
    }
};

和

const query = new GraphQLObjectType({
    name: 'Queries',
    fields: () => {
        return {
            getPictureList: getPictureList,
            getPicture: getPicture
        }
    }
});

const schema = new GraphQLSchema({
    query: query,
    mutation: mutation
});

引发：

Error: Queries.getPicture(type:) argument type must be Input Type but got: undefined.

getPictureList工作正常，getPicture失败。

我试过让getPicture成为GraphQLLIst，没有帮助。

我尝试将args类型设为输入类型，但没有帮助。

关于这里发生了什么的任何想法

堆栈跟踪是：

Error: Queries.getPicture(type:) argument type must be Input Type but got: undefined.
at invariant (/home/jrootham/dev/trytheseon/node_modules/graphql/jsutils/invariant.js:19:11)
at /home/jrootham/dev/trytheseon/node_modules/graphql/type/definition.js:307:33
at Array.map (native)
at /home/jrootham/dev/trytheseon/node_modules/graphql/type/definition.js:304:52
at Array.forEach (native)
at defineFieldMap (/home/jrootham/dev/trytheseon/node_modules/graphql/type/definition.js:293:14)
at GraphQLObjectType.getFields (/home/jrootham/dev/trytheseon/node_modules/graphql/type/definition.js:250:46)
at /home/jrootham/dev/trytheseon/node_modules/graphql/type/schema.js:224:27
at typeMapReducer (/home/jrootham/dev/trytheseon/node_modules/graphql/type/schema.js:236:7)
at Array.reduce (native)
at new GraphQLSchema (/home/jrootham/dev/trytheseon/node_modules/graphql/type/schema.js:104:34)
at Object.<anonymous> (/home/jrootham/dev/trytheseon/server/graphQL.js:45:16)
at Module._compile (module.js:399:26)
at normalLoader (/usr/lib/node_modules/babel/node_modules/babel-core/lib/babel/api/register/node.js:160:5)
at Object.require.extensions.(anonymous function) [as .js] (/usr/lib/node_modules/babel/node_modules/babel-core/lib/babel/api/register/node.js:173:7)
at Module.load (module.js:345:32)
at Function.Module._load (module.js:302:12)
at Module.require (module.js:355:17)
at require (internal/module.js:13:17)
at Object.<anonymous> (/home/jrootham/dev/trytheseon/devServer.js:14:44)
at Module._compile (module.js:399:26)
at normalLoader (/usr/lib/node_modules/babel/node_modules/babel-core/lib/babel/api/register/node.js:160:5)

Answer 1

问题不在于查询的返回类型，而在于您为args指定的类型。

<ion-header-bar class="bar-positive">
          <button class="icon ion-home button button-clear"></button>
      <h1 class="title">vivalooks</h1>
          <button class="icon ion-person button button-clear"></button>
      </ion-header-bar>

      <div class="bar bar-subheader item-input-inset bar-light">
      <label class="item-input-wrapper">
          <i class="icon ion-search placeholder-icon"></i>
          <input type="search" placeholder="Search">

          </label>

      </div>
<ion-view>


<ion-content class="has-subheader">

    <ion-list class="list-inset" ng-repeat="items in keeps">
    <ion-item class="item-text-wrap">
       <div class="thumbnails_v"> <img ng-src="http://localhost/vivalooks/resize_image/vivalooks.php?image={{item.pic}}&new_width=300&new_height=300"">
           </div>
        <p>
        {{item.fname}} {{item.lname}}
        </p>

        </ion-item>

    </ion-list>

    </ion-content>

</ion-view>

假设你想要一个名为＆＃34的参数;输入＆＃34;它应该是：

export const getPicture = {
    type: GraphPicture,
    args: {
        type: new GraphQLNonNull(GraphQLInt)
    },
    resolve(_, args) {
        return Picture.findByPrimary(args.id);
    }
};

这是graphql-js repo的一个例子：

export const getPicture = {
    type: GraphPicture,
    args: {
        type: {
             type: new GraphQLNonNull(GraphQLInt)
        }
    },
    resolve(_, args) {
        return Picture.findByPrimary(args.id);
    }
};

请参阅graphql-js repo中的完整架构：https://github.com/graphql/graphql-js/blob/master/src/tests/starWarsSchema.js

Answer 2

仅供参考，我在这里搜索相同的错误，但不是undefined，而是使用我自己的Product类型：

... argument * must be Input Type but got Product

原来在GraphQL中传递给Mutation的内容应该是标量类型（String，Integer，...）或用户定义的 input 类型，而不是{{1} }类型。

http://graphql.org/graphql-js/mutations-and-input-types/

type

我试图传递我的产品input ProductInput { id: ID name: String }：

type

这感觉有点多余，但猜测，我很高兴以后将它分开。

GraphQL错误 - 参数类型必须是输入类型但得到：undefined

2 个答案: