/** * There is a difference between input fields that are present, but have an * empty value (e.g. an empty textbox), and input fields that are not * present at all (e.g. an unchecked checkbox). For some reason, Zend_Filter_Input * does not take the error message for a missing field from the rule * itself, but from an options array. Let's override the function that * returns this message to use a message from the rule, and not the options * array. */ protected function _getMissingMessage($rule, $field) { if ($this->_validatorRules[$rule][self::MESSAGES][0]) { return $this->_validatorRules[$rule][self::MESSAGES][0]; } else { return parent::_getMissingMessage($rule, $field); } }