Node Mongo Db查找几分钟的记录

I am facing an issue, actually I have mongoose module

我正面临一个问题，实际上我有mongoose模块

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

var saveVisitorsDetails = new Schema({
  userId : { type: String, unique: true, dropDups: true},
  visitorName : { type: String},
  visitorMobileNumber : { type: Number},
  expireStatus : { type : Number},
  clientUnreadMessageCount : { type : Number},
  adminUnreadMessageCount : { type : Number},
  visibleVisitorChat : { type : Boolean},
  visibleAdminChat : { type : Boolean},
  displayAdminChat : { type : Boolean},
  activeChat : { type : Boolean},
  adminId : { type : String},
  visitorMsg : { type : String},
  msgTiming : { type : Date},
  showVisitorCross : { type : Boolean},
  showVisitorMinimize : { type : Boolean},
  newMessageForAdmin : { type : Boolean},
  expireUserForAdmin : { type : Boolean},
  visitorLocationObject : { type : Object }
});

module.exports = mongoose.model('Visitor',saveVisitorsDetails);

I want to query all documents of msgTiming 5 minutes from now, but I can't get it.

我想从现在起5分钟后查询msgTiming的所有文件，但我无法得到它。

My query is

我的疑问是

var express = require('express');
var app = express();
var Visitor = require('./models/visitor');
app.post('/loadVisitorDetails', function(req, res){
    Visitor.collection.find({adminId : req.body.adminId ,expireStatus : 0}).sort({msgTiming : -1}).toArray(function(err, result){
        if(err){
            console.log(err);
        }else{
            var obj = {
                rslt : result,
                id : req.body.adminId
            }
            res.send(obj);
        }
    });
});

I don't know how to find all records of 5 minutes from now and response array should be on msgTiming arrangement

我不知道如何找到从现在起5分钟的所有记录，响应数组应该在msgTiming安排上

Please help me, I have been facing this problem for the past 2 days; any suggestions will be appreciated

请帮助我，过去2天我一直面临这个问题;任何建议将不胜感激

Thanks in advance

提前致谢

2 个解决方案

#1

You can do like this

你可以这样做

var express = require('express');
var app = express();
var Visitor = require('./models/visitor');
app.post('/loadVisitorDetails', function (req, res) {

    let now = new Date();
    let after = new Date();
    after.setMinutes(after.getMinutes() + 5);
    let critria = {
        $and: [{
            adminId: req.body.adminId
        }, {
            expireStatus: 0
        }, {
            msgTiming: {
                $gte: now,
                $lte: after
            }
        }]
    };

    let projection = {}
    let options = { sort:{ msgTiming : -1 }}

    Visitor.collection.find(critria,projection,options,function(err,result){
        if(err){
            console.log(err)
        } else {
            console.log(result)
        }
    })       
});

#2

you have to use moment npm

你必须使用时刻npm

first change your msgTiming : { type : Date}, to msgTiming : { type : Number} in Visitor Model Schema .

首先将访问者模型模式中的msgTiming：{type：Date}更改为msgTiming：{type：Number}。

when you inserting a recored, set msgTiming: moment().unix() in your Object.

当你插入一个recored时，在你的Object中设置msgTiming：moment（）。unix（）。

it will store current unix timestamp in seconds like 1318874398

它将以秒为单位存储当前的unix时间戳，如1318874398

app.post('/loadVisitorDetails', function(req, res){
       var currenttime= moment().unix();
       var 5minbefore=currenttime-300;  // (5 * 60)
       Visitor.collection.find({adminId : req.body.adminId,expireStatus : 0,msgTiming:{$gt: 5minbefore, $lte : currenttime}},
                     function(err, result){
                         console.log(result);
                      });
});

#1