NodeJS：Mongoose從MongoDB返回錯誤的結果，儘管Mongo shell返回正確的結果

Question

我使用Express來構建我的第一個使用MongoDB作爲數據庫和Mongoose的NodeJS應用程序，因爲它是建模工具。我遵循tutorial from MDN作爲我的指導。 問題是，當我從我的應用程序查詢MongoDB它返回錯誤的結果，但是當我從Mongo shell查詢它時，我得到正確的結果。 一個示例場景是用下面的代碼，它返回零（0）對我的藏品做雖然有在那裏的文件（這是正確地蒙戈外殼返回）每計數：

var async = require('async'); 

var GeneralUser = require('../models/guser'); 
var Truck = require('../models/truck'); 
var Trip = require('../models/trip'); 
var TruckLocation = require('../models/location'); 

exports.index = function(req, res, next) { 
    async.parallel({ 
     user_count: function(callback) { 
      GeneralUser.count(callback); 
     }, 
     truck_count: function(callback) { 
      Truck.count(callback); 
     }, 
     trip_count: function(callback) { 
      Trip.count(callback); 
     }, 
     location_count: function(callback) { 
      TruckLocation.count(callback); 
     }, 

    }, function(err, results) { 
     res.render('index', { title: 'My App Home Page', error: err, data: results }); 
    }); 
}; 

什麼是它我可能會失蹤？任何暗示，我可能會做錯誤的方式將受到高度讚賞。

EDIT 1
guser.js

var mongoose = require('mongoose'); 

var Schema = mongoose.Schema; 

var GUserSchema = Schema(
    { 
    firstName: {type: String, required: true, maxlength: 100}, 
    lastName: {type: String, required: true, maxlength: 100}, 
    username: {type: String, required: true, unique: true, minlength: 6, maxlength: 20}, 
    password: {type: String, required: true, minlength: 8, maxlength: 20}, 
    gender: {type: String, required: true, enum: ['Male','Female'], default: 'Male'}, 
    bio: {type: String, match: /[aA-zZ]/, default: ''}, 
    companyName: {type: String, maxlength: 100, default: ''}, 
    physicalAddress: {type: String, required: true}, 
    city: {type: String, required: true, maxlength: 100}, 
    country: {type: String, required: true, maxlength: 100}, 
    mobileNo: {type: String, required: true, match: /[0-9]{12}/, default: '255656516903'}, 
    email: {type: String, required: true, unique: true, match: /^([\w-\.]+@([\w-]+\.)+[\w-]{2,4})?$/}, 
    } 
); 
//Export model 
module.exports = mongoose.model('GeneralUser', GUserSchema); 

location.js

var mongoose = require('mongoose'); 

var Schema = mongoose.Schema; 

var LocationSchema = Schema(
    { 
    locationName: String, 
    geo: {type: [Number], index: '2dSphere'}, 
    tripID: {type: Schema.ObjectId, ref: 'Trip', required: true}, 
    loggedDate: {type: Date, default: Date.now}, 
    } 
); 
//Export model 
module.exports = mongoose.model('TruckLocation', LocationSchema); 

trip.js

var mongoose = require('mongoose'); 

var Schema = mongoose.Schema; 

var TripSchema = Schema(
    { 
    startingLocation: {type: String, required: true, maxlength: 100}, 
    destination: {type: String, required: true, maxlength: 100}, 
    routeName: {type: String, required: true, maxlength: 100}, 
    plannedDeparture: {type: Date, required: true}, 
    expectedArrival: {type: Date, required: true}, 
    containerIsFull: {type: Boolean, required: true}, 
    truckID: {type: Schema.ObjectId, ref: 'Truck', required: true}, 
    } 
); 
//Export model 
module.exports = mongoose.model('Trip', TripSchema); 

truck.js

var mongoose = require('mongoose'); 

var Schema = mongoose.Schema; 

var TruckSchema = Schema(
    { 
    truckName: {type: String, required: true, maxlength: 100}, 
    truckType: {type: String, required: true, maxlength: 100}, 
    truckModel: {type: String, required: true, maxlength: 100}, 
    containerNo: {type: String, required: true, maxlength: 10}, 
    truckPass: {type: String, required: true, minlength: 8, maxlength: 20}, 
    ownerID: {type: Schema.ObjectId, ref: 'GeneralUser', required: true}, 
    } 
); 
//Export model 
module.exports = mongoose.model('Truck', TruckSchema); 

以上是我的模特按@Haroon Khan的要求。

它似乎仍然是我的故障排除導致我無處。

Answer 1

試試這個：

Truck.count({}, callback);