validators.php

<?php
/* app/validators.php  */

Validator::extend('alpha_spaces', function($attribute, $value)
{
    return preg_match('/^[\pL\s]+$/u', $value);
});


/*
* add the validators.php file in start/global.php: require app_path().'/validators.php'
* and use it as usual:  $rules = array('name' => 'required|alpha_spaces',);
*/