9

如何使用nestjs 实现猫鼬插件？

import * as mongoose from 'mongoose';
import uniqueValidator from 'mongoose-unique-validator';
import mongoosePaginate from 'mongoose-paginate';
import mongoose_delete from 'mongoose-delete';

const UsuarioSchema = new mongoose.Schema({
    username: {
        type: String,
        unique: true,
        required: [true, 'El nombre de usuario es requerido']
    },
    password: {
        type: String,
        required: [true, 'La clave es requerida'],
        select: false
    }
});

UsuarioSchema.plugin(uniqueValidator, { message: '{PATH} debe ser único' });
UsuarioSchema.plugin(mongoosePaginate);
UsuarioSchema.plugin(mongoose_delete, { deletedAt : true, deletedBy : true, overrideMethods: true });

错误：第一个参数schema.plugin()必须是一个函数，得到“未定义”

4

5 回答 5

15

这是为那些使用mongoose -paginate插件和 nestjs 的人准备的片段。您还可以安装@types/mongoose-paginate以获得类型支持

  1. 将分页插件添加到架构的代码：
import { Schema } from 'mongoose';
import * as mongoosePaginate from 'mongoose-paginate';

export const MessageSchema = new Schema({
// Your schema definitions here
});

// Register plugin with the schema
MessageSchema.plugin(mongoosePaginate);
  1. 现在在Message接口文档中
export interface Message extends Document {
// Your schema fields here
}
  1. 现在您可以像这样轻松地在服务类中获取分页方法
import { Injectable } from '@nestjs/common';
import { InjectModel } from '@nestjs/mongoose';
import { PaginateModel } from 'mongoose';
import { Message } from './interfaces/message.interface';

@Injectable()
export class MessagesService {
    constructor(
        // The 'PaginateModel' will provide the necessary pagination methods
        @InjectModel('Message') private readonly messageModel: PaginateModel<Message>,
    ) {}

    /**
     * Find all messages in a channel
     *
     * @param {string} channelId
     * @param {number} [page=1]
     * @param {number} [limit=10]
     * @returns
     * @memberof MessagesService
     */
    async findAllByChannelIdPaginated(channelId: string, page: number = 1, limit: number = 10) {
        const options = {
            populate: [
                // Your foreign key fields to populate
            ],
            page: Number(page),
            limit: Number(limit),
        };
        // Get the data from database
        return await this.messageModel.paginate({ channel: channelId }, options);
    }
}
于 2019-05-08T20:02:37.837 回答
2

尝试这个：

import * as mongoose from 'mongoose';
import * as uniqueValidator from 'mongoose-unique-validator';
import * as mongoosePaginate from 'mongoose-paginate';
import * as mongoose_delete from 'mongoose-delete';

const UsuarioSchema = new mongoose.Schema({
   username: {
    type: String,
    unique: true,
    required: [true, 'El nombre de usuario es requerido']
   },
   password: {
       type: String,
       required: [true, 'La clave es requerida'],
       select: false
   }
});

UsuarioSchema.plugin(uniqueValidator, { message: '{PATH} debe ser único' });
UsuarioSchema.plugin(mongoosePaginate);
UsuarioSchema.plugin(mongoose_delete, { deletedAt : true, deletedBy : true, overrideMethods: true });

export default UsuarioSchema;

然后你可以像这样使用它：

import UsuarioSchema from './UsuarioSchema'
于 2019-05-27T03:40:10.947 回答
1

NestJS 文档有更好的方法将插件添加到任一单独的模式。

@Module({
  imports: [
    MongooseModule.forFeatureAsync([
      {
        name: Cat.name,
        useFactory: () => {
          const schema = CatsSchema;
          schema.plugin(require('mongoose-autopopulate'));
          return schema;
        },
      },
    ]),
  ],
})
export class AppModule {}

或者，如果在全球范围内。

import { Module } from '@nestjs/common';
import { MongooseModule } from '@nestjs/mongoose';

@Module({
  imports: [
    MongooseModule.forRoot('mongodb://localhost/test', {
      connectionFactory: (connection) => {
        connection.plugin(require('mongoose-autopopulate'));
        return connection;
      }
    }),
  ],
})
export class AppModule {}
于 2021-08-27T20:03:48.707 回答
0

这是一个使用timestamp插件的例子

import { Schema } from 'mongoose';
import * as timestamp from 'mongoose-timestamp';
export const ConversationSchema = new Schema({
  users: [String],
}).plugin(timestamp);

尝试更换

import uniqueValidator from 'mongoose-unique-validator';
import mongoosePaginate from 'mongoose-paginate';
import mongoose_delete from 'mongoose-delete';

经过

import * as uniqueValidator from 'mongoose-unique-validator';
import * as mongoosePaginate from 'mongoose-paginate';
import * as mongoose_delete from 'mongoose-delete';
于 2018-03-27T09:58:54.170 回答
-1

如果您遵循官方文档，则可以在此文件中添加插件：

`export const databaseProviders = [
  {
    provide: 'DbConnectionToken',
    useFactory: async () => {
      (mongoose as any).Promise = global.Promise;

      mongoose
        .plugin('pluginOne')
        .plugin('pluginTwo')

      return await mongoose.connect('mongodb://localhost/nest', {
        useMongoClient: true,
      });
    },
  },
];`

提醒一下，如果您在 Schema 文件中设置插件，您将设置相同的插件多次。设置插件的最佳方式只有一次。

于 2018-04-05T07:18:13.663 回答