如何获得猫鼬模型的所有计数? [英] How to get all count of mongoose model?

问题描述

我怎么知道保存数据的模型数量?有Model.count()的方法，但似乎不起作用.

How can I know the count of a model that data has been saved? there is a method of Model.count(), but it doesn't seem to work.

var db = mongoose.connect('mongodb://localhost/myApp');
var userSchema = new Schema({name:String,password:String});
userModel =db.model('UserList',userSchema);        
var userCount = userModel.count('name');

userCount是一个Object，哪个调用的方法可以获取真实的count?

userCount is an Object, which method called can get a real count?

谢谢

Thanks

推荐答案

以下代码有效.请注意 countDocuments 的使用.

The code below works. Note the use of countDocuments.

 var mongoose = require('mongoose');
 var db = mongoose.connect('mongodb://localhost/myApp');
 var userSchema = new mongoose.Schema({name:String,password:String});
 var userModel =db.model('userlists',userSchema);
 var anand = new userModel({ name: 'anand', password: 'abcd'});
 anand.save(function (err, docs) {
   if (err) {
       console.log('Error');
   } else {
       userModel.countDocuments({name: 'anand'}, function(err, c) {
           console.log('Count is ' + c);
      });
   }
 }); 

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