label = $label; $this->parameters = $parameters; } /** * Validate field data * @param mixed $field Field data * @return bool TRUE if field is valid, FALSE otherwise */ public function validate($field) { if (is_array($field)) { return (count($field) >= 1); } if (extension_loaded('mbstring')) { return (mb_strlen(trim($field), strtoupper(get_bloginfo('charset'))) >= 1); } return (strlen(trim($field)) >= 1); } /** * Returns error message * @return string */ public function getMessage() { if ($this->message !== null) { return sprintf($this->message, $this->label); } return sprintf(__('The %s field cannot be empty', 'rsc-framework'), $this->label); } /** * Set error message * @param string $message Error message */ public function setMessage($message) { $this->message = (string)$message; } /** * Creates the new instance of the rule for chaining * * Rsc_Form_Rule_Required::create('Control label', $params)->setMessage('The field %s is required'); * * @param string $label Field label * @param null $parameters An array of parameters * @return Rsc_Form_Rule_Required */ public static function create($label, $parameters = null) { return new self($label, $parameters); } }