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<?php
/*
* Copyright 2017 Jack Sleight <http://jacksleight.com/>
* This source file is subject to the MIT license that is bundled with this package in the file LICENCE.
*/
namespace Coast\Transformer\Rule;
use Coast;
use Coast\Transformer\Rule;
class NullType extends Rule
{
protected function _transform($value)
{
if (!is_string($value)) {
return $value;
}
if (strlen($value) == 0) {
$value = null;
}
return $value;
}
}