Laravel 5 Eloquent Casts

User.php

<?php namespace App;

use Illuminate\Database\Eloquent\Model;

class User extends Model {

    // ...

    /**
     * The attributes that should be casted to native types.
     *
     * @var array
     */
    protected $casts = [
        'id' => 'integer',
    ];

    // ...
    
}