Mongoose实例方法未定义 [英] Mongoose instance method is undefined

问题描述

我用Mongoose定义了一个实例方法来验证一个rep（用户）：

  RepSchema.methods.authenticate = function密码）{
 return this.encryptPassword（password）=== this.hashed_pa​​ssword; 
}; 
  

在我的应用程序中，我找到rep并调用验证方法：

  var mongoose = require（mongoose）; 
 var Rep = mongoose.model（Rep）; 
 
 Rep.findOne（{email：email}，function（err，rep）{
 if（rep.authenticate（req.body.session.password））{
 req .session.rep_id = rep._id; 
 res.redirect（'/ calls'，{}）; 
} 
}）; 
  

但是我收到这个错误：

  TypeError：Object {email：'[e-mail]'，
密码：XXXXXXXXX，
名称：'meltz'，
 _id：4fbc6fcb2777fa0272000003 ，
 created_at：Wed，23 May 2012 05:04:11 GMT，
 confirm：false，
 company_head：false}没有方法'authenticate'
 
解决方案
所以我终于弄清楚我在做错了什么。 mogoose源代码将模型的模型设置为模型名称的位置（<$ c $）将所有定义的方法应用于 schema.methods 中的模型原型c> mongoose.model（modelname，modelSchema））。因此，在将模型设置为其名称之前，必须定义所有方法，将这些方法添加到Schema实例的方法对象中。我在定义方法之前设置模型。问题解决了。
 
I defined an instance method with Mongoose to authenticate a rep (user):
RepSchema.methods.authenticate = function(password){
  return this.encryptPassword(password) === this.hashed_password;
};
In my app, I find the rep and call the authenticate method on it:
var mongoose = require("mongoose");
var Rep = mongoose.model("Rep");

Rep.findOne({email: email}, function(err, rep){
  if (rep.authenticate(req.body.session.password)){
    req.session.rep_id = rep._id;
    res.redirect('/calls', {});
  }
});
However I get this error:
TypeError: Object { email: '[e-mail]',
  password: XXXXXXXXX,
  name: 'meltz',
  _id: 4fbc6fcb2777fa0272000003,
  created_at: Wed, 23 May 2012 05:04:11 GMT,
  confirmed: false,
  company_head: false } has no method 'authenticate'
What am I doing wrong?
解决方案
So I finally figured out what I was doing wrong. The mongoose source code applies all defined methods inside schema.methods to the prototype of the model at the point at which the model's schema is set to the model name (mongoose.model("modelname", modelSchema)). Therefore, you must define all methods, which adds these methods to the method object of the Schema instance, before you set the model to its name. I was setting the model before defining the methods. Problem solved.

                        
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