如何从我的MongoDB查询常量中获取值 [英] How to get the values from my MongoDB query a const

问题描述

假设我有一个MongoDB Schema调用设置，该模式具有一些值，我希望每个值都可以在另一个模式中用作常量

Let's say I have a MongoDB Schema call settings, this schema has some values that I want each of the value to be used in another schema as a constant

const mongoose = require('mongoose');
const Schema = mongoose.Schema;

// Create Schema
const SettingSchema = new Schema({
  dimension:{ 
    type: Number
  }
paystack:{
    type: String
  }
paypal:{
    type: String
  }
stripe:{
    type: String
  }
});

module.exports = Settings = mongoose.model('settings', SettingSchema);

{
  "_id": "5d7f77d620cf10054ded50bb",
  "dimension": 166,
  "paystack": "A1212asdvsdvdd12121313",
  "paypal": "Bfwfw2ewrewrr32ASDdd133",
  "stripe": "Fr1aEacstewrr32ASDdd133",
  "__v": 0
}

我要实现的目标是创建一个const维，该维将从我的设置架构中拉出166.

What I am trying to achieve is to create a const dimension that will pull out that 166 from my settings schema.

推荐答案

您可以尝试以下代码.

const settingModel = require('../models/setting.model');
const ObjectId = require('mongodb').ObjectId;
settingModel.aggregate([
        {
            $match: { '_id': ObjectId(5d7f77d620cf10054ded50bb) }
        },
]).exec((err , data) =>{
   if(err){
      console.log(err);
   }else{
     console.log(data);  
     console.log(data[0].dimension);
   }

这篇关于如何从我的MongoDB查询常量中获取值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！