猫鼬插件 nestjs [英] Mongoose Plugins nestjs

问题描述

如何使用 nestjs 实现 mongoose 插件?

How can I implement the mongoose plugin using nestjs?

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:schema.plugin() 的第一个参数必须是一个函数，得到未定义"

Error: First param to schema.plugin() must be a function, got "undefined"

推荐答案

这是给那些使用 mongoose-paginate 插件与 nestjs.您还可以安装 @types/mongoose-paginate 以获得类型支持

This is a snippet for those who are using mongoose-paginate plugin with nestjs. You can also install @types/mongoose-paginate for getting the typings support

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);
    }
}

这篇关于猫鼬插件 nestjs的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！