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 '@nestjs-query/core'import { TypeOrmQueryService } from '@nestjs-query/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 '@nestjs-query/query-graphql';import { NestjsQueryTypeOrmModule } from '@nestjs-query/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 {}