在猫鼬模式中扩展接口以添加插件方法 [英] Extend interface in mongoose schema to add plugin method

问题描述

我有一个带有自定义接口的模式模型:

I have a Schema Model with a custom Interface:

interface IPost extends Document {
    created: Date;
    mensaje: string;
    img: string[];
    coords: string;
    usuario: string;
    test: string;
}

我在导出模型时使用这个接口:

I use this interface when exporting model:

export const Post = model<IPost>('Post', postSchema);

我想使用 mongoose-paginate-v2 插件，我已经初始化了:

I would like to use mongoose-paginate-v2 plugin, I initialized:

postSchema.plugin(mongoosePaginate);

如果我在没有 IPost 接口的情况下导出 Post 模型，我可以在我的路由中 .paginate()，但不能使用我的 IPost 接口.我尝试将方法添加到我的界面，尝试从 mongoose-paginate-v2 类型扩展，但我还没有得到它.

And if I export Post Model without my IPost interface I can .paginate() in my route, but not with my IPost interface. I tried adding the method to my interface, trying to extend from mongoose-paginate-v2 types but i haven`t got it.

如何将 mongoose-paginate-v2 中的 .paginate() 方法添加到我的界面?谢谢.

How can I add .paginate() method from mongoose-paginate-v2 to my interface? Thanks.

推荐答案

我对打字稿也很陌生，因此无法解释整个代码，但这是解决方案.

I too am very new to typescript, thus won't be able to explain the whole code but here's the solution.

/* postModel.ts */

/* postModel.ts */

import { Schema, model, PaginateModel } from 'mongoose';

interface IPost extends Document {
    created: Date;
    mensaje: string;
    img: string[];
    coords: string;
    usuario: string;
    test: string;
}

const postSchema = new Schema({
    created: Date.now(),
    mensaje: String,
    img: [String],
    coords: String,
    test: String,
})

export default model<IPost, MongooseModel<IPost>>('Post', postSchema);

导入以上文件为:

import postModel from './postModel.ts'

postModel.paginate(filters, options)

您现在可以使用分页功能了.

You'll be able to use paginate function now.

不要忘记添加 mongoose-paginate-v2.我个人喜欢在与数据库建立连接时添加它.这样我就不必在我创建的每个架构中都导入它.

Do not forget to add mongoose-paginate-v2. I personally like to add it while establishing a connection with the database. So that I don't have to import it in every schema that I create.

您可以这样做:

// DEPENDENCIES
import * as mongoose from 'mongoose';
import * as mongoosePaginate from 'mongoose-paginate-v2';

const connection = mongoose.connect(process.env.MONGODB_URI, {
  dbName: process.env.DB_NAME,
  authSource: 'admin',
  user: process.env.DB_USER,
  pass: process.env.DB_PASSWORD,
  useNewUrlParser: !0,
  useUnifiedTopology: !0,
  useCreateIndex: !0,
  useFindAndModify: !1,
  autoIndex: !0,
})
  .then(() => {
    console.log('Mongoose connected to db');
  })
  .catch((err: Error) => {
    console.log(err.message);
  });

mongoose.connection.on('connected', () => {
  console.log('Mongodb bridge connected');
});

mongoose.connection.on('error', (err: Error) => {
  console.log(`Mongoose connection ERROR: ${err}`);
});

mongoose.connection.on('disconnected', () => {
  console.log('Mongoose connection disconnected');
});

process.on('SIGINT', async () => {
  await mongoose.connection.close();
  process.exit(0);
});

mongoose.plugin(mongoosePaginate);

export default connection;

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