架构必须包含名为“Project”的唯一命名类型

如何解决架构必须包含名为“Project”的唯一命名类型

我正在使用 type-orm 创建 Apollo Graphql 后端。我创建了一个名为 Project 的实体：

import { Field,ObjectType } from "type-graphql";
import { BaseEntity,Column,Entity,ObjectID,ObjectIdColumn } from "typeorm";

@ObjectType()
@Entity()
export class Project extends BaseEntity {

  @Field(() => String)
  @ObjectIdColumn()
  id: ObjectID;

  @Field()
  @Column({ unique: true })
  name!: string;

  @Field()
  @Column()
  startDate!: Date;

  @Field()
  @Column({nullable: true})
  endDate!: Date
  
  @Field()
  @Column({unique:true})
  githubUrl: string;
}

和解析器项目：

import { Arg,Mutation,Query,Resolver } from 'type-graphql'
import {Project} from '../entities/project'
import {ProjectInput,ProjectResponse} from '../types/ProjectTypes'

@Resolver()
export class ProjectResolver {  
    
  @Query(() => [Project])
  async getProjects(): Promise<Project[] | null> {     
    let projects = await Project.getRepository().find();
    return projects;
  }
    
  @Mutation(() => ProjectResponse)
  async createProject(
      @Arg("input") input: ProjectInput
  ): Promise<ProjectResponse>{
    let project : Project;
    if(input.name == ""){
        throw Error("Invalid input")
    }
    try{
        project = await Project.create({
            name: input.name,startDate: input.startDate,}).save();        
    }catch (error) {
        if (error.code === 11000) {
          return {
            errors: [
              {
                field: "project",message: "The project name is already in use",},],};
        } else return error;
    }
    return {project: project};
  }    

    @Mutation(() => ProjectResponse)
    async setProjectEndDate(
        @Arg("projectId") projectId: string,@Arg("endDate") endDate: Date
    ): Promise<ProjectResponse>{
        let project = await Project.getRepository().findOne(projectId)
        if(project){
            if(project?.startDate > endDate){
             return {
                 errors:[{
                         field:"EndDate",message:"The end date must be a date after the start date of a project."
                     }]
                }   
            }
            project.endDate = endDate;
            project.save();
        }
        return {
            errors:[{
                field:"Project",message:"Project could not be found."
            }]
        }        
  }
}

这是解析器输入和响应的2个辅助类的代码：

@InputType()
export class ProjectInput{
    @Field()
    name: string

    @Field()
    startDate: Date

    @Field(()=> Date,{nullable:true})
    endDate?: Date | null

    @Field(()=> String,{nullable:true})
    githubUrl?: string

}

@ObjectType()
export class ProjectResponse{
  @Field(() => [FieldError],{ nullable: true })
  errors?: FieldError[]
  
  @Field(() => Project,{ nullable: true })
  project?: Project | null
}

这是我用来创建 ApolloServer 对象的代码：

const apolloServer = new ApolloServer({
    introspection: true,playground: true,schema: await buildSchema({
      resolvers: [ProjectResolver],validate: false,// Disable default GraphQL errors
    }),context: ({ req,res }) => ({ req,res}),// Enables use of context (with request) in resolvers
  })

我得到的错误如下：

错误：架构必须包含唯一命名的类型，但包含多个名为“项目”的类型。 在新的 GraphQLSchema (C:\Users\User\Desktop\UPV\Proyectos\Cv web\myweb-backend\node_modules\graphql\type\schema.js:194:15) 在 Function.generateFromMetadataSync (C:\Users\User\Desktop\UPV\Proyectos\Cv web\myweb-backend\node_modules\type-graphql\dist\schema\schema-generator.js:31:32) 在 Function.generateFromMetadata (C:\Users\User\Desktop\UPV\Proyectos\Cv web\myweb-backend\node_modules\type-graphql\dist\schema\schema-generator.js:16:29) 在 Object.buildSchema (C:\Users\User\Desktop\UPV\Proyectos\Cv web\myweb-backend\node_modules\type-graphql\dist\utils\buildSchema.js:10:61) 在 C:\Users\User\Desktop\UPV\Proyectos\Cv web\myweb-backend\dist\index.js:42:38 在 Generator.next() 在完成 (C:\Users\User\Desktop\UPV\Proyectos\Cv web\myweb-backend\dist\index.js:5:58) 在 processTicksAndRejections (internal/process/task_queues.js:97:5)

我不知道问题出在哪里，所以非常感谢您的帮助

解决方法

通过更改“ProjectResolver”类中“Project”类的导入，我设法解决了这个问题。

代替： import {Project} from '../entities/project'

现在看起来像这样： import {Project} from '../../src/entities/project'