Question

我已经扩展了CI表单验证库，如下所示：

class MY_Form_validation extends CI_Form_validation {

    function __construct($config = array())
    {
        parent::__construct($config);
    }

    function check_first_char($str) 
    {
        $CI =& get_instance();
        $first_char = substr($str, 0, 1);
        if ($first_char != 'P' || $first_char != 'S') 
        {
            $CI->form_validation->set_message('check_first_char', 'The %s field must begin with P or S!');
            return FALSE;
        }
        else {
            return TRUE;
        }
    }

并将其称为以下内容：

$this->form_validation->set_rules('sponsor_id', 'Sponsor ID', 'trim|required|exact_length[7]|check_first_char');

但它不起作用。我做错了什么？

Answer 1

确保在控制器中初始化库：

$this->load->library('form_validation');

Answer 2

$this->form_validation->set_rules('sponsor_id', 'Sponsor ID', 'trim|required|exact_length[7]|callback_check_first_char');

如果我没弄错的话，你需要'回调_'

来源：http://codeigniter.com/user_guide/libraries/form_validation.html

编辑：您还需要初始化form_validation库。

Codeigniter验证库扩展无效

2 个答案: