php - CodeIgniter form validation rule won't run if string is empty -
i have custom rule, regex[table_name.column_name.post_value] , using in following manner: $this->form_validation->set_rules( 'postal_code', 'postal code', 'regex[countries.postal_code_regex.country_code]' ); and here custom rule's function in my_form_validation.php : public function regex($str, $field){ list($table, $col, $post_val)=explode('.', $field); // grab regex $regex = $this->ci ->db ->limit(1) ->select($col) ->where($post_val, $_post[$post_val]) ->get($table) ->row($col); return preg_match('/'.$regex.'/', $str) === 1; } how codeigniter run rule if user sends empty string? note: cannot use required rule depends on whether database has regex or not. try below code: public function regex($str, $field){ list($table, $col, $post_val...
