按类别获取所有记录 NestJs + MongoDB + Mongoose

Get all records by category NestJs + MongoDB + Mongoose

我正在使用 NestJs + MongoDB + Mongoose,我想用我通过参数发送的记录获取 MongoDB 中的所有记录,但我没有得到它,我是初学者。我怎样才能获得同一类别的所有记录? 我在请求中发送了类别 ID,但我没有收到该类别的所有记录,你能帮我吗?

我需要这个:

获取/users/food 和 return 这个:

{ "password": "123", "name": "Brian", "adress": "", "email": "a@a", "category": "food", "cpfOrCnpj": "string" },

{ "password": "123", "name": "Margo", "adress": "", "email": "a@a", "category": "food", "cpfOrCnpj": "string" }

我的代码:

我的服务:

import { Injectable } from '@nestjs/common';
import { InjectModel } from '@nestjs/mongoose';
import { User } from './user.model';
import { Model } from 'mongoose';

@Injectable()
export class UserService {
  constructor(@InjectModel('User') private readonly userModel: Model<User>) {}

  async create(doc: User) {
    //Ok
    const result = await new this.userModel(doc).save();
    return result.id;
  }

  async find(id: string) {
    return await this.userModel.findById(id).exec();
  }


  async update(user: User) {
    //Test
    return await this.userModel.findByIdAndUpdate(user);
  }

}

我的控制器:

import { Body, Controller, Get, Param, Post, Put } from '@nestjs/common';
import { UserService } from './user.service';
import { User } from './user.model';

@Controller('user')
export class UserController {
  constructor(private service: UserService) {}

  @Get(':id')
    async find(@Param('category') id: string) {
    return this.service.find(id);
  }

  @Post('create')
  create(@Body() user: User) {
    return this.service.create(user);
  }

  @Put('update')
  update(@Body() user: User) {
    return this.service.update(user);
  }

}

在这个函数中

  find(id: string) {
    return this.userModel.findById(id).exec();
  }

您正在按 _id 搜索,findById 方法用于按文档 _id 过滤

我认为 category 不是你这里文档的 _id

所以,你需要使用正常的find方法,并传递一个对象给它

  find(id: string) { // id is not _id here, I suggest you to name it category instead 
    return this.userModel.find({ category: id }).exec();
  }

Note, you don't need the async/await here, as you are returning the promise itself

希望对您有所帮助