/** * Returns true if and only if $value meets the validation requirements * * If $value fails validation, then this method returns false, and * getMessages() will return an array of messages that explain why the * validation failed. * * @param mixed $value * @param mixed $content * @return boolean * @throws \Zend_Validate_Exception If validation of $value is impossible */ public function isValid($value, $context = array()) { $result = $this->_user->authenticate($value); return $this->setAuthResult($result); }