一、安装 nestjs/mongoose 以及 mongoose 模块
Nest 操作 Mongodb 官方文档：https://docs.nestjs.com/techniques/mongodb
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| npm install --save @nestjs/mongoose mongoose
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二、配置数据库连接地址
在 app.module.ts 中配置数据库连接
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| import { Module } from '@nestjs/common';
import { MongooseModule } from '@nestjs/mongoose';
@Module({
imports: [MongooseModule.forRoot('mongodb://localhost/koa',{ useNewUrlParser: true })]
})
export class ApplicationModule {}
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三、配置 Schema
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| import * as mongoose from 'mongoose';
export const ArticleSchema = new mongoose.Schema({
title: String,
keywords:String,
author: Number,
status: String,
});
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四、在控制器对应的 Module 中配置 Model
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| import { Module } from '@nestjs/common';
import { NewsController } from './news.controller';
import { NewsService } from './news.service';
import { ArticleSchema } from './schemas/article.schema';
import { MongooseModule } from '@nestjs/mongoose';
@Module({
imports: [MongooseModule.forFeature([{ name: 'Article', schema: ArticleSchema,collection:"article" }])], controllers: [NewsController],
providers: [NewsService]
})
export class NewsModule {}
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五、在服务里面使用 InjectModel 获取数据库 Model 实现 操作数据库
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| import { Injectable } from '@nestjs/common';
import { InjectModel } from '@nestjs/mongoose';
@Injectable()
export class NewsService {
constructor(@InjectModel('Article') private readonly articleModel) {}
async findAll() {
return await this.articleModel.find().exec();
}
}
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