如何在nest js app的root app模块中注入模型

npm install -g @nestjs/cli

nest new my-app

cd my-app

import { Module } from '@nestjs/common';
import { UserModel } from './models/user.model';

@Module({
  imports: [],
  controllers: [],
  providers: [UserModel], // 在providers数组中添加模型类
})
export class AppModule {}

import { Injectable } from '@nestjs/common';

@Injectable()
export class UserModel {
  // 模型的具体实现...
}

import { Injectable } from '@nestjs/common';
import { UserModel } from './models/user.model';

@Injectable()
export class UserService {
  constructor(private readonly userModel: UserModel) {}

  getUsers(): any[] {
    // 使用注入的模型进行操作...
    return this.userModel.find();
  }
}