model.js

'use strict';
const mongoose = require('mongoose');
const bcrypt = require('bcryptjs');
mongoose.Promise = global.Promise;

const userSchema = mongoose.Schema({
	username: {type: String, required: true},
	email: {type: String, required: true},
	password: {type: String, required: true}
});

const pastSearchSchema = mongoose.Schema({
	user: { type: mongoose.Schema.Types.ObjectId, ref: 'Users' },
	music_title: {type: String},
	IMSLP_links: [String],
	creation: {type: String}
});

pastSearchSchema.pre('find', function(next) {
	this.populate('user');
	next();
});

pastSearchSchema.pre('findOne', function(next) {
	this.populate('user');
	next();
});

pastSearchSchema.pre('findById', function(next) {
	this.populate('user');
	next();
});

pastSearchSchema.pre('findByIdAndUpdate', function(next) {
	this.populate('user');
	next();
});

pastSearchSchema.methods.serialize = function() {
	return {
		id: this._id,
		username: this.user.username,
		music_title: this.music_title,
		IMSLP_links: this.IMSLP_links,
		creation: this.creation
	};
};

userSchema.methods.serialize = function() {
	return {
		id: this._id,
		username: this.username,
		email: this.email
	};
};

userSchema.methods.validatePassword = function(password) {
	return bcrypt.compare(password, this.password);
}

userSchema.statics.hashPassword = function(password) {
	return bcrypt.hash(password, 10);
}

const Users = mongoose.model('Users',userSchema);
const PastSearches = mongoose.model('PastSearches', pastSearchSchema);

module.exports = { Users, PastSearches };