Node js - Push() 函数在参考和 mongodb 中无法正常工作

Question

I am using ObjectReferences and push the comment data to the database but it's not working Even the data is being saved but only 'id' get added, not the user and comment

Main File with Push Method

var Comment = require('./models/comments'),
    Camp = require('./models/user');    
app.post('/camp/:id/comment', (req,res)=>{
Camp.findById(req.params.id, (err, idf)=>{
    if(err){
    console.log(err);
    }else{

    Comment.create(req.body.comment, (err, commentz)=>{
    if(err){
      console.log(err);
    }else{
      console.log(commentz + idf);
      idf.comments.push(commentz)
      idf.save();
      res.redirect('/camp/'+ idf._id)
    }
    })
    }
})
})

ObjectReferences user.js

    var mongoose = require('mongoose');

var schema = mongoose.Schema;
var blogSchema = new schema({
name : String,
email  : String,
descr : String,  // TEMPORERY
posts: [
{
type: mongoose.Schema.Types.ObjectId,
ref: 'Post'

}
],
comments: [
    {
    type: mongoose.Schema.Types.ObjectId,
    ref: 'Comment'
    }
]
});

var Camp = mongoose.model("Camp", blogSchema);
module.exports= Camp;

CommentSchema comments.js

    var mongoose = require('mongoose');

var schema = mongoose.Schema;
var cSchema = new schema({
user : String,
comment  : String,
})

var Comment = mongoose.model("Comment", cSchema);
module.exports =Comment;

Main Form

    <form action="/camp/<%=camp._id%>/comment" method="post" class="form-group">
<div class="form-group">
<input class="form-control" type="text" name="comment[user]" value="" placeholder="Name">
</div>
<div class="form-group">
    <textarea class="form-control" style="height:100px" type="text" name="comment[comment]" value="" placeholder="Your Comment"></textarea>
</div>
<div class="form-group">
<button class="btn btn-primary btn-large btn-block" type="submit" name="submit"> SUBMIT</button>
</div>
</form>

The only ID added to the user's database, not all comments and in the comment, collection data added perfectly

Answer 1

I think instead of using commentz use commentz._id and have a callback for .save . It should work.

  console.log(commentz + idf);
  idf.comments.push(commentz._id)
  idf.save(function(err){
    if(err){
      // handle error
    }
    res.redirect('/camp/'+ idf._id)
  });