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지난글에 이어서 PATCH와 DELETE를 구현해보자.
먼저 npm 모듈을 설치하고 UpdateCatDto를 만들어준다.
$ npm i @nestjs/mapped-types
update-cat.dto.ts
import {IsString, IsNumber} from 'class-validator'
import { PartialType } from '@nestjs/mapped-types';
import { CreateCatDto } from './create-cat.dto';
export class UpdateCatDto extends PartialType(CreateCatDto) {}
Update 먼저 구현해보자. 컨트롤러와 서비스를 바꿔준다.
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 { UpdateCatDto } from './dto/update-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();
}
@Get('/:id')
async getOne(@Param('id') catId: number): Promise<Cat[]> {
console.log(catId)
return await this.catsService.getOne(catId);
}
@Post()
async create(@Body() catsData : CreateCatDto) {
return await this.catsService.create(catsData);
}
@Patch('/:id')
async update(@Param('id') catId: number, @Body() updateData: UpdateCatDto) {
return this.catsService.update(catId,updateData)
}
}
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';
import { UpdateCatDto } from './dto/update-cat.dto';
@Injectable()
export class CatsService {
constructor(@InjectModel(Cat.name) private catModel: Model<CatDocument>) {}
async getAll(): Promise<Cat[]> {
return await this.catModel.find().exec();
}
async getOne(id:number): Promise<Cat[]> {
return await this.catModel.find({"id" : id});
}
async create(catsData: CreateCatDto) {
let latestId = await this.catModel.findOne();
return await this.catModel.create({...catsData, id : parseInt(latestId ? latestId.id : 0)+1});
}
async update(id: number, updateData : UpdateCatDto) {
try {
await this.catModel.where({"id" : id}).update(updateData);
return true
}
catch(e) {
return false
}
}
}PATCH 메소드로 요청을 보내보자.
GetAll()로 확인해보자.
정상적으로 id가 1인 데이터의 name이 "초코"로 바뀐 것을 확인할 수 있다.
DELETE도 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 { UpdateCatDto } from './dto/update-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();
}
@Get('/:id')
async getOne(@Param('id') catId: number): Promise<Cat[]> {
console.log(catId)
return await this.catsService.getOne(catId);
}
@Post()
async create(@Body() catsData : CreateCatDto) {
return await this.catsService.create(catsData);
}
@Patch('/:id')
async update(@Param('id') catId: number, @Body() updateData: UpdateCatDto) {
return this.catsService.update(catId,updateData)
}
@Delete('/:id')
async delete(@Param('id') catId: number) {
return this.catsService.delete(catId);
}
}
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';
import { UpdateCatDto } from './dto/update-cat.dto';
@Injectable()
export class CatsService {
constructor(@InjectModel(Cat.name) private catModel: Model<CatDocument>) {}
async getAll(): Promise<Cat[]> {
return await this.catModel.find().exec();
}
async getOne(id:number): Promise<Cat[]> {
return await this.catModel.find({"id" : id});
}
async create(catsData: CreateCatDto) {
let latestId = await this.catModel.findOne();
return await this.catModel.create({...catsData, id : parseInt(latestId ? latestId.id : 0)+1});
}
async update(id: number, updateData : UpdateCatDto) {
try {
await this.catModel.where({"id" : id}).update(updateData);
return true
}
catch(e) {
return false
}
}
async delete(id: number) {
try {
await this.catModel.remove({"id" : id});
return true
}
catch(e) {
return false
}
}
}
postman으로 실행해본다.
getAll() 전체데이터를 확인해본다.
이렇게 몽고DB로 연결해서 데이터 CRUD 하는 것을 완성하였다.
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