如何为NodeJs REST API和打字稿设置Typegoose?
我总是收到诸如MongoParseError: Incomplete key value pair for option
之类的奇怪错误消息,或者尽管有一些,但我没有收到任何数据。
有人可以提供完整的示例吗?
答案 0 :(得分:0)
如果要在以下条件下编程API,可以使用下面提供的最小示例:
条件:
NodeJS
Typescript
MongoDB (locally)
示例:
如果您使用的是打字稿,则建议使用与此类似的项目结构:
├── dist
| ├── (your compiled JS)
├── src
| ├── models
| | ├── user.model.ts
| ├── user-repository.ts
| ├── app.ts
| ├── index.ts
├── test
| ├── (your tests)
此外,还需要安装以下软件包
npm install --save typescript mongoose express @types/express @types/mongoose typegoose
index.ts:
这个文件,我只是出于引导目的
import app from './app';
const port = 3000;
app.listen(port, (err) => {
if (err) {
return console.log(err);
}
return console.log('Server up and running on ' + port);
});
app.ts:
这里,实际的逻辑还在继续
import { UserRepository } from './user-repository';
import * as express from 'express';
export class App {
public app;
constructor() {
this.app = express();
this.config();
this.mountRoutes();
}
private mountRoutes() {
// Definition of the possible API routes
this.app.route('/users')
.get((req, res) => {
var repo = new UserRepository();
// we catch the result with the typical "then"
repo.getUsers().then((x) => {
// .json(x) instead of .send(x) should also be okay
res.status(200).send(x);
});
});
// here with parameter
// |
// v
this.app.route('/users/:id')
.get((req, res) => {
var repo = new UserRepository();
repo.getUser(req.params.id).then((x) => {
res.status(200).send(x);
});
});
}
}
export default new App().app;
user-repository.ts
import * as mongoose from 'mongoose';
import { User, UserModel } from './models/user.model';
export class UserRepository {
constructor() {
// protocol host port database
// | | | |
// v v v v
mongoose.connect('mongodb://localhost:27017/mongotest');
// this only works, if your mongodb has no auth configured
// if you need authentication, use the following:
// mongoose.connect(MONGO_URL, {
// auth: {
// user: MONGO_DB_USER,
// password: MONGO_DB_PASSWORD
// },
// })
}
async getUser(id: number): Promise<User> {
// json query object as usual
// |
// v
return UserModel.findOne({"userId": id});
}
async getUsers(): Promise<User[]> {
return UserModel.find({});
}
}
user.model.ts
import * as mongoose from 'mongoose';
import { prop, Typegoose } from 'typegoose';
export class User extends Typegoose{
// properties
// |
// v
@prop()
userId: number;
@prop()
firstname?: string;
@prop()
lastname: string;
@prop()
email: string;
}
export const UserModel = new User().getModelForClass(User, {
existingMongoose: mongoose,
// had many problems without that definition of the collection name
// so better define it
// |
// v
schemaOptions: {collection: 'users'}
})
很明显,我有一个mongodb在本地运行,有一个名为mongotest的数据库,并且内部有一个名为users的集合。