Question

我在custom_form_validation.php中创建了一个application\libraries文件，其中包含：

<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed'); 
  class Custom_form_validation extends CI_Form_validation {
    function Custom_form_validation()
    {
      parent::__construct();  
    }

    /* at_least_one_letter() by Ben Swinburne
     * http://stackoverflow.com/a/9218114/1685185
     -----------------------------------------------*/
    public function has_at_least_one_letter( $string ) 
    {
      $result = preg_match('#[a-zA-Z]#', $string);
      if ( $result == FALSE ) $this->set_message('has_at_least_one_letter', 'The %s field must have at least one letter.');
    return $result;
    }
  }

然后我将它加载到特定的控制器中：

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

最后，我使用函数has_at_least_one_letter作为：

$this->form_validation->set_rules('FieldName', 'field name', 'has_at_least_one_letter');

我不知道出了什么问题，因为我按照SO中给出的示例来构建我自己的库，特别是关于“extends form_validation”的库。我错过了一个步骤或一些特殊的部分吗？

Answer 1

自定义库扩展了CI_Form_Validation：

库\ MY_Form_validation.php

<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class MY_Form_validation extends CI_Form_validation {

    protected $CI;

    function __construct()
    {
        parent::__construct();
        $this->CI =& get_instance();
    }

function has_at_least_one_letter($string) {
    $this->CI->form_validation->set_message('has_at_least_one_letter', 'The %s field must have at least one letter.');
    return preg_match('#[a-zA-Z]#', $string);
}

然后使用

$this->form_validation->set_rules('FieldName', 'field name', 'has_at_least_one_letter');

Answer 2

您无需在CodeIgniter中创建单独的函数来运行regex验证。它允许您像这样指定正则表达式：

$this->form_validation->set_rules('FieldName', 'field name', 'regex_match[#[a-zA-Z]#]');

自定义Form_validation库无法正常工作

2 个答案: