CakePHP model validation match

Test.php

<?php

class Test extends AppModel {

	public $name = 'Test';
     public $validate = array(
		'field' => array(
			array(
				'rule' => array('match','field_confirm.'),
				'message' => 'The field must match.'
			)
		),
     );
	 
	 public function match($data, $otherField) {
	 
		$fieldValue = current($data);
		$otherFieldValue = $this->data[$this->name][$otherField];
		return ($fieldValue === $otherFieldValue);
	 
	 }
}