mongoose-weird-save-failure.js

/*********** database.js ******************/

var mongoose = require('mongoose')
mongoose.Promise = global.Promise
mongoose.set('useFindAndModify', false)

// connection
exports.connection = null

// schemas and entities
exports.User = null
exports.UserSchema = null

// Connect to database
exports.connectToDatabase = function () {
    if (!exports.connection) {
        var db = mongoose.createConnection('mongodb://localhost:27017/databasename', { useNewUrlParser: true })
		mongoose.set('useCreateIndex', true)
        exports.connection = db
        exports.defineDatabaseSchemas()

        // If the Node process ends, close the Mongoose connection
        process.on('SIGINT', function() {
            if (exports.connection) { exports.connection.close(function () { exports.connection = null; }); }
        })
        // If the Node process exits, close the Mongoose connection
        process.on('exit', function() {
            if (exports.connection) { exports.connection.close(function () { exports.connection = null; }); }
        })
    }
}

exports.currentConnection = function() { return exports.connection }

exports.closeConnection = function(completion) {
    if (exports.connection) {
        exports.connection.close(function () {
            exports.connection = null
            if (completion) { completion() }
        })
    } else { if (completion) { completion() } }
}

exports.defineDatabaseSchemas = function () {
    console.log(env.name+" database: Defining global database schemas")

    // Users
    var userSchema = mongoose.Schema({
        "first_name": { type: String, required: true },
        "last_name": { type: String, required: true },  
		"locale": String,
        "status": String,                              
		"bio": String,
		"login_key": String,
		"email": String,
		"promo_code": String,
		"phone": String,
		"avatar": String,
		"certificate": {
			"_id": false,
			"text": String,
			"properties": mongoose.Schema.Types.Mixed,
			"signature_algorithm": String,
			"start_date": Date,
			"end_date": Date
		},
        "registration_data": mongoose.Schema.Types.Mixed,
        "created": Date,
		"heard_about_us": String, // where did you hear about us?
	})
    exports.User = exports.connection.model('users', userSchema)
    exports.UserSchema = userSchema
}

/*********** test.js ******************/

var db = require('./database.js')

db.connectToDatabase()
var newUser = new db.User({
    "first_name": "John",
    "last_name": "Smith",
	"email": "[email protected]",
	"phone": "+1233489548",
})
newUser.save(function (err, savedUser) {
	console.log(err)
	console.log(savedUser)
	db.closeConnection()
	console.log("Exiting...")
	process.exit(0)
})