Loading... ## 首先在schema定义一下你的目标collection ``` import { Prop, Schema, SchemaFactory } from '@nestjs/mongoose'; import * as mongoose from 'mongoose'; import { Meta } from './meta.schema' //引入目标的schema @Schema() export class Article { @Prop({ type: mongoose.Schema.Types.ObjectId, //根据ObjectId关联 ref: 'Meta' }) category_id: Meta; //输入你要关联上的集合的scema } export const ArticleSchema = SchemaFactory.createForClass(Article); ``` ## 查询的时候使用 ``` this.ArticleModel.findOneAndUpdate({ _id: id, hidden: 0 }, { $inc: { views: 1 } }, { useFindAndModify: false }).populate('category_id') ``` ## 如果是一对多查询的时候 定义的时候用一个数组把数据包进去就可了 ``` @Prop([{ type: mongoose.Schema.Types.ObjectId, //根据ObjectId关联 ref: 'Meta' }]) ``` Last modification：January 5th, 2021 at 09:16 pm © 允许规范转载 Support If you think my article is useful to you, please feel free to appreciate ×Close Appreciate the author Sweeping payments Pay by AliPay Pay by WeChat
