Angularjs Mongodb使用nodejs保存数据

我是mongodb的新手。我只是使用mongodb插入数据。我的文档看起来：

{

   "_id": ObjectId("5654085bf61deb761109d157"),
   "address": "dsaddsadsad",
   "email": "dsaddsadsad",
   "name": "sadasdasdsad",
   "__v": NumberInt(0) 
}

我的模型看起来：

// grab the mongoose module
var mongoose = require('mongoose');

// define our nerd model
// module.exports allows us to pass this to other files when it is called
module.exports = mongoose.model('users', {
    name : {type : String, default: ''},
    email : {type : String, default: ''},
    address : {type : String, default: ''},

});

现在有一个用户对此发表评论。那么文档应该是：

{
     "comments": [
     {
       "uname": "arpit",
       "uemail": "arpit@gmail.com",
       "comment": "How can Make we this at good",
       "posted_at": ISODate("2015-11-19T11:06:03.628Z") 
    },
     {
       "uname": "sumit",
       "uemail": "sumit@ggi.net",
       "comment": "this is also well for me",
       "posted_at": ISODate("2015-11-19T11:06:27.172Z") 
    } 
  ],
       "_id": ObjectId("5654085bf61deb761109d157"),
       "address": "dsaddsadsad",
       "email": "dsaddsadsad",
       "name": "sadasdasdsad",
       "__v": NumberInt(0) 
    }

如何制作此文档。我的代码是：

var Users = require("../app/models/users");
app.post('/comments/:id', function(req, res) {
var id = req.params.id; //coment id
var input = JSON.parse(JSON.stringify(req.body)); //comment data
//code should be here
});

请帮助测试以下内容：

Users.findByIdAndUpdate(id, {$push: {"comments":{
     uname: req.body.the_uname,
     uemail : req.body.the_uemail,
     comment: req.body.the_comment,
     posted_at: Date.now() 
   } 
 }
}).exec(function(error, res){});

---

您是否在模型中定义了注释？

/**users model*/
var mongoose = require('mongoose');
module.exports = mongoose.model('users', {
    name : {type : String, default: ''},
    email : {type : String, default: ''},
    address : {type : String, default: ''},
    comments: []
});

var Users = require("../app/models/users");
app.post('/comments/:id', function(req, res) {
   var id = req.params.id; //coment id
   var object = {}
   for(var key in req.body){
      object[key] = req.body[key];
    }
    Users
      .findByIdAndUpdate(req.params.id, {$push: {"comments": object}})
      .exec(function(error, result){
          if(error){
            console.log(error);
          }
          else{
           console.log(result);
          }
     })