Mongoose instance .save() not working

Question

I have a problem with Mongoose and MongoDb

It is very interesting that only Model.update works and save never works and does not even fire callback.

Mongoose: 4.4.5 MongoDB: 3.0.8

Express Route

var mongoose = require('mongoose'); mongoose.connect("mongodb://127.0.0.1:27017/db"); var db = mongoose.connection; db.on('error', console.error.bind(console, 'connection error:')); db.once('open', function(callback) {     console.log("connection to db open") }); var User = require("../models/user.js"); 

User Model

var user = new Schema({     uid: { type: Number, required: true, unique: true},     hwid: { type: String, default:""},     bol:{type:String,default:""} }); 

Update Enpoint

Working version: Model.update()

User.update({_id: id}, {     uid: 5,  }, function(err, numberAffected, rawResponse) {     console.log(err); }) 

Not working version and I have to solve this: Object.save()

User.find({_id:id}, function(err,user){     if(err){          console.log(err);     }     if(!user){          console.log("No user");     }else{         user.uid = 5;         user.save(function(err,news){             console.log("Tried to save...");         });     }     console.log("At least worked"); }) 

Even callback is not firing. Connection successfully opens. It never invokes callback.

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1. Tried to use var User = connection.model('User', schema) didn't work.

Answer 1

I have the same problem. my problem was about changing an array inside db, then when I try to use .save(), it didn't understand that I changed any thing, then the .save() didn't work. I just use markModified() before use .save() and my problem become solved.

this is my code with problem: (not working)

club.members[index].name = new_name; club.save(); 

this is my solved code: (working)

club.members[index].name = new_name; club.markModified('members'); club.save(); 

enjoy!