NestJS 5 GraphQL 错误查询在解析器中定义，但不在模式中

Posted 2023-03-10

【中文标题】NestJS 5 GraphQL 错误查询在解析器中定义，但不在模式中

【英文标题】：NestJS 5 GraphQL Error Query defined in resolvers, but not in schema

【发布时间】：2019-08-27 14:27:42

【问题描述】：

我收到类似于Query.products is defined in resolvers but not in schema 中描述的错误，但仅在我推送到 Heroku 时出现。以下是详细信息：

// profile.graphql
type Profile 
  id: ID!
  version: String!
  // ...


type Query 
  profile(id: ID!): Profile
  profiles: [Profile]

// profiles.resolver.ts
import  Args, Query, Resolver  from '@nestjs/graphql'
import  Profile  from './profile.entity'

@Resolver('Profile')
export class ProfileResolver 
  @Query()
  public async profile(@Args('id') id: number) 
    return await Profile.findOne(id)
  

  @Query()
  public async profiles() 
    return await Profile.find()
  

在本地，我可以运行 yarn start:dev 并且效果很好。应用程序成功启动，我可以毫无问题地查询我的 GraphQL 端点。

当我将它推送到 Heroku 时，应用程序永远不会启动。

2019-04-03T15:42:38.102056+00:00 heroku[web.1]: Starting process with command `node dist/main.js`
2019-04-03T15:42:42.448420+00:00 app[web.1]: [Nest] 4   - 4/3/2019, 3:42:42 PM   [NestFactory] Starting Nest application...
2019-04-03T15:42:42.499150+00:00 app[web.1]: [Nest] 4   - 4/3/2019, 3:42:42 PM   [InstanceLoader] ConfigModule dependencies initialized +51ms
2019-04-03T15:42:42.499439+00:00 app[web.1]: [Nest] 4   - 4/3/2019, 3:42:42 PM   [InstanceLoader] TypeormConfigModule dependencies initialized +0ms
2019-04-03T15:42:42.499805+00:00 app[web.1]: [Nest] 4   - 4/3/2019, 3:42:42 PM   [InstanceLoader] TypeOrmModule dependencies initialized +0ms
2019-04-03T15:42:42.500251+00:00 app[web.1]: [Nest] 4   - 4/3/2019, 3:42:42 PM   [InstanceLoader] ApiModule dependencies initialized +1ms
2019-04-03T15:42:42.500726+00:00 app[web.1]: [Nest] 4   - 4/3/2019, 3:42:42 PM   [InstanceLoader] PassportModule dependencies initialized +0ms
2019-04-03T15:42:42.501201+00:00 app[web.1]: [Nest] 4   - 4/3/2019, 3:42:42 PM   [InstanceLoader] DataModule dependencies initialized +1ms
2019-04-03T15:42:42.501651+00:00 app[web.1]: [Nest] 4   - 4/3/2019, 3:42:42 PM   [InstanceLoader] GqlConfigModule dependencies initialized +0ms
2019-04-03T15:42:42.502039+00:00 app[web.1]: [Nest] 4   - 4/3/2019, 3:42:42 PM   [InstanceLoader] EntitiesModule dependencies initialized +0ms
2019-04-03T15:42:42.502411+00:00 app[web.1]: [Nest] 4   - 4/3/2019, 3:42:42 PM   [InstanceLoader] UsersModule dependencies initialized +0ms
2019-04-03T15:42:42.502819+00:00 app[web.1]: [Nest] 4   - 4/3/2019, 3:42:42 PM   [InstanceLoader] HelpersModule dependencies initialized +0ms
2019-04-03T15:42:42.503246+00:00 app[web.1]: [Nest] 4   - 4/3/2019, 3:42:42 PM   [InstanceLoader] ProfilesModule dependencies initialized +1ms
2019-04-03T15:42:42.503676+00:00 app[web.1]: [Nest] 4   - 4/3/2019, 3:42:42 PM   [InstanceLoader] ResourceTypesModule dependencies initialized +0ms
2019-04-03T15:42:42.504107+00:00 app[web.1]: [Nest] 4   - 4/3/2019, 3:42:42 PM   [InstanceLoader] SchemaMappingsModule dependencies initialized +1ms
2019-04-03T15:42:42.504580+00:00 app[web.1]: [Nest] 4   - 4/3/2019, 3:42:42 PM   [InstanceLoader] SearchReplaceValuesModule dependencies initialized +0ms
2019-04-03T15:42:42.505006+00:00 app[web.1]: [Nest] 4   - 4/3/2019, 3:42:42 PM   [InstanceLoader] XpathExpressionsModule dependencies initialized +0ms
2019-04-03T15:42:42.505581+00:00 app[web.1]: [Nest] 4   - 4/3/2019, 3:42:42 PM   [InstanceLoader] JwtModule dependencies initialized +1ms
2019-04-03T15:42:42.550301+00:00 app[web.1]: [Nest] 4   - 4/3/2019, 3:42:42 PM   [InstanceLoader] AppModule dependencies initialized +45ms
2019-04-03T15:42:42.553207+00:00 app[web.1]: [Nest] 4   - 4/3/2019, 3:42:42 PM   [InstanceLoader] GraphQLModule dependencies initialized +3ms
2019-04-03T15:42:42.553861+00:00 app[web.1]: [Nest] 4   - 4/3/2019, 3:42:42 PM   [InstanceLoader] AuthModule dependencies initialized +0ms
2019-04-03T15:42:42.674522+00:00 app[web.1]: query: SELECT * FROM "information_schema"."tables" WHERE "table_schema" = current_schema() AND "table_name" = 'migrations'
2019-04-03T15:42:42.690182+00:00 app[web.1]: query: SELECT * FROM "migrations" "migrations"
2019-04-03T15:42:42.693584+00:00 app[web.1]: No migrations are pending
2019-04-03T15:42:42.696083+00:00 app[web.1]: [Nest] 4   - 4/3/2019, 3:42:42 PM   [InstanceLoader] TypeOrmCoreModule dependencies initialized +142ms
2019-04-03T15:42:42.734620+00:00 app[web.1]: [Nest] 4   - 4/3/2019, 3:42:42 PM   [RoutesResolver] AppController /: +35ms
2019-04-03T15:42:42.735243+00:00 app[web.1]: [Nest] 4   - 4/3/2019, 3:42:42 PM   [RouterExplorer] Mapped /, GET route +4ms
2019-04-03T15:42:42.735665+00:00 app[web.1]: [Nest] 4   - 4/3/2019, 3:42:42 PM   [RoutesResolver] AuthController /auth: +0ms
2019-04-03T15:42:42.737212+00:00 app[web.1]: [Nest] 4   - 4/3/2019, 3:42:42 PM   [RouterExplorer] Mapped /register, POST route +2ms
2019-04-03T15:42:42.739125+00:00 app[web.1]: [Nest] 4   - 4/3/2019, 3:42:42 PM   [RouterExplorer] Mapped /login, POST route +0ms
2019-04-03T15:42:42.739137+00:00 app[web.1]: [Nest] 4   - 4/3/2019, 3:42:42 PM   [RouterExplorer] Mapped /refresh, POST route +0ms
2019-04-03T15:42:42.849522+00:00 app[web.1]: (node:4) UnhandledPromiseRejectionWarning: Error: Query.profile defined in resolvers, but not in schema

为什么我在生产中而不是在开发中得到错误？是什么导致 GraphQL 架构没有注册我的 profile 查询？

【问题讨论】：

在本地运行 yarn start 会发生什么？

【参考方案1】：

local 和 prod 之间的区别适用于 Typescript。我发现 Typescript 没有复制任何 .graphql 文件，所以我在创建 dist 文件夹后使用 copyfiles 解决问题。