Custom Service

To create a custom query service to add your own methods to you can extend the TypeOrmQueryService.

todo-item.service.ts

import { QueryService } from '@ptc-org/nestjs-query-core'
import { TypeOrmQueryService } from '@ptc-org/nestjs-query-typeorm'
import { InjectRepository } from '@nestjs/typeorm'
import { Repository } from 'typeorm'
import { TodoItemEntity } from './todo-item.entity'

@QueryService(TodoItemEntity)
export class TodoItemService extends TypeOrmQueryService<TodoItemEntity> {

  constructor(@InjectRepository(TodoItemEntity) repo: Repository<TodoItemEntity>) {
    super(repo)
  }

  async markAllAsCompleted(): Promise<number> {
    const entities = await this.query({ filter: { completed: { is: true } } })

    const { updatedCount } = await this.updateMany(
      { completed: true }, // update
      { id: { in: entities.map((e) => e.id) } } // filter
    )
    // do some other business logic
    return updatedCount
  }
}

To use the custom service in the auto-generated resolver you can specify the ServiceClass option.

todo-item.module.ts

import { NestjsQueryGraphQLModule } from '@ptc-org/nestjs-query-graphql'
import { NestjsQueryTypeOrmModule } from '@ptc-org/nestjs-query-typeorm'
import { Module } from '@nestjs/common'
import { TodoItemDTO } from './dto/todo-item.dto'
import { TodoItemEntity } from './todo-item.entity'
import { TodoItemService } from './todo-item.service'

@Module({
  imports: [
    NestjsQueryGraphQLModule.forFeature({
      imports: [NestjsQueryTypeOrmModule.forFeature([TodoItemEntity])],
      services: [TodoItemService],
      resolvers: [
        {
          DTOClass: TodoItemDTO,
          ServiceClass: TodoItemService
        }
      ]
    })
  ]
})
export class TodoItemModule {}