无法从模式拼接中的另一个 schema.graphql 文件中的其他 schema.graphql 文件访问共享模式

Posted 2023-03-08

【中文标题】无法从模式拼接中的另一个 schema.graphql 文件中的其他 schema.graphql 文件访问共享模式

【英文标题】：Cannot access shared schema from other schema.graphql file in another schema.graphql file in schema stiching

【发布时间】：2019-09-06 17:06:45

【问题描述】：

我在 userSchema.graphql 文件中有用户架构；

  id: String!
  userName: String!
  email: String!
  password: String!

我有不同的 schema.graphql 文件用于登录和注册

我无法访问登录/注册模式中的用户模式

type Query
    hi: String!

type Mutation 
    register( userName: String!, email: String!, password: String! ): User

我正在使用来自 graphql 工具的模式拼接 并从 merge-graphql-schema 包中合并 typeDefs 和解析器

import "graphql-import-node";
import  GraphQLSchema  from "graphql";
import  mergeResolvers, mergeTypes  from "merge-graphql-schemas";
import * as userSchema from './modules/auth/shared/schema.graphql'
import * as registerTypedefs from "./modules/auth/register/schema.graphql";
import registerResolver from "./modules/auth/register/registerResolver";

import * as todoTypedefs from "./modules/todo/schema.graphql";
import todoResolver from "./modules/todo/todoResolver";

import  makeExecutableSchema  from "graphql-tools";

const schema: GraphQLSchema = makeExecutableSchema(
  typeDefs: mergeTypes([userSchema, registerTypedefs, todoTypedefs],  all: true ),
  resolvers: mergeResolvers([registerResolver, todoResolver])
);
export default schema;

我收到了错误

Error: Field register: Couldn't find type User in any of the schemas.
    at collectNode (E:\graphql\express-apollo-server\node_modules\graphql-import\src\definition.ts:154:15)
    at E:\graphql\express-apollo-server\node_modules\graphql-import\src\definition.ts:135:7
    at Array.forEach (<anonymous>)

编辑 我使用了“merge-graphql-schemas”中的 fileLoader 而且效果很好

import  mergeResolvers, mergeTypes, fileLoader  from "merge-graphql-schemas";


const typesArray = fileLoader(path.join(__dirname, './modules/**/*.graphql'),  recursive: true )

const schema: GraphQLSchema = makeExecutableSchema(
  typeDefs: mergeTypes(typesArray,  all: true ),
  resolvers: mergeResolvers([registerResolver, loginRegister, todoResolver, storyResolver])
);

【参考方案1】：

我在我的项目中使用了一个 require-graphql 文件和 lodash 合并，同样的场景也适用于我。

import requireGraphQLFile from 'require-graphql-file';
import  merge  from 'lodash';

const $userSchema = requireGraphQLFile('./schema/yourFolder/userSchema.graphql');
const $registerTypedefs= requireGraphQLFile('./schema/yourFolder/register.graphql');

import registerResolver from "./modules/auth/register/registerResolver";
import todoResolver from "./modules/todo/todoResolver";

const schema: GraphQLSchema = makeExecutableSchema(
   typeDefs: [$userSchema, 
              $registerTypedefs,
              todoTypedefs
             ],              
   resolvers: merge(registerResolver, todoResolver)
);

希望这会有所帮助。

【讨论】：

我正在使用打字稿，但它的@types 不存在。所以它不起作用。