import { Module } from "@nestjs/common";
import { TypegooseModule } from "nestjs-typegoose";
import { Cat } from "./cat.model";
import { CatsController } from "./cats.controller";
import { CatsService } from "./cats.service";

@Module({
  imports: [TypegooseModule.forFeature([Cat])],
  controllers: [CatsController],
  providers: [CatsService],
})
export class CatsModule {}

Get the cat model in a service

cats.service.ts

import { Injectable } from "@nestjs/common";
import { InjectModel } from "nestjs-typegoose";
import { Cat } from "./cat.model";
import { ReturnModelType } from "@typegoose/typegoose";

@Injectable()
export class CatsService {
  constructor(
    @InjectModel(Cat) private readonly catModel: ReturnModelType<typeof Cat>
  ) {}

  async create(createCatDto: { name: string }): Promise<Cat> {
    const createdCat = new this.catModel(createCatDto);
    return await createdCat.save();
  }

  async findAll(): Promise<Cat[] | null> {
    return await this.catModel.find().exec();
  }
}

Finally, use the service in a controller!

cats.controller.ts

import { Controller, Get, Post, Body } from "@nestjs/common";
import { CatsService } from "./cats.service";
import { Cat } from "./cats.model.ts";

@Controller("cats")
export class CatsController {
  constructor(private readonly catsService: CatsService) {}

  @Get()
  async getCats(): Promise<Cat[] | null> {
    return await this.catsService.findAll();
  }

  @Post()
  async create(@Body() cat: Cat): Promise<Cat> {
    return await this.catsService.create(cat);
  }
}

Requirements

1. @typegoose/typegoose +6.1.5
2. @nestjs/common +6.10.1
3. @nestjs/core +6.10.1
4. mongoose (with typings @types/mongoose) +5.7.12

License

nestjs-typegoose is MIT licensed.