Nest.js | MongoDB | Find

먼저 다음과 같이 main.ts 파일에 파이프를 추가해준다.

 

main.ts

import { ValidationPipe } from '@nestjs/common';
import { NestFactory } from '@nestjs/core';
import { AppModule } from './app.module';

async function bootstrap() {
  const app = await NestFactory.create(AppModule);
  app.useGlobalPipes(
    new ValidationPipe({
      whitelist : true, 
      forbidNonWhitelisted : true,
      transform : true
    })
  )
  await app.listen(3000);
}
bootstrap();

 

그다음 controller와 service에 GET메소드로 getAll() 메소드를 만들어보자.

 

cats.controller.ts

import { Controller, Get, Param, Post, Delete, Patch, Body, Query } from '@nestjs/common';
import { CatsService } from './cats.service';
import { CreateCatDto } from './dto/create-cat.dto';
import { Cat } from './schemas/cat.schema';


@Controller('cats')
export class CatsController {
    constructor(private readonly catsService: CatsService) {}

    @Get()
    async getAll(): Promise<Cat[]> {
        return await this.catsService.getAll();
    }


}

 

cats.service.ts

import { Model } from 'mongoose';
import { Injectable } from '@nestjs/common';
import { InjectModel } from '@nestjs/mongoose';
import { Cat, CatDocument } from './schemas/cat.schema';
import { CreateCatDto } from './dto/create-cat.dto';

@Injectable()
export class CatsService {
  constructor(@InjectModel(Cat.name) private catModel: Model<CatDocument>) {}

  async getAll(): Promise<Cat[]> {
    return await this.catModel.find().exec();
  }
}

 

postman으로 확인해보자

 

 

아직 추가한 Document가 없기 때문에 당연히 빈배열로 받아와진다.