CodeIgniter调用自定义form_validation类中的回调 [英] CodeIgniter call a callback within a custom form_validation class

问题描述

基本上我想使用里面一个回调验证方法 Form_validation 。

确定CASE

我使用公共回调方法创建 MY_Form_validation

在我的控制器中加载：

  public function __construct ）
 {
 parent :: __ construct（）; 
 $ this-> load-> helper（array（'form'，'url'））; 
 $ this-> load-> library（'form_validation'）; 
} 
  

在此控制器中使用：

  $ this-> form_validation-> validate（）; 
  

我在自定义窗体类中使用它：

  $ this-> CI-> form_validation-> set_rules（'field'，'field'，'check_callback'）; 
  

请注意，它不会被调用 callback_< code>这是我不知道为什么只有工作没有 callback _ 前缀

我创建

在我的控制器中加载：

$ my_custom_form_validation pre> public function __construct（）
{
parent :: __ construct（）;
$ this-> load-> helper（array（'form'，'url'））;
$ this-> load-> library（'form_validation'）;
$ this-> load-> library（'my_custom_form_validation'）;
}

$ this-> my_custom_form_validation-> validate（）;


在 set_rules 但这次我收到以下错误：

 无法访问与您的字段名称字段（check_callback）
  

为什么会发生这种情况？他们只有不同的文件名和加载方式！我在这里错过了什么吗？

或者只有一个扩展 MY_Form_validation ，将包含整个项目的整个验证？除了 MY_Form_validation ？

---

MY_Form_validation.php

 < ;? php 
 class MY_Form_validation extends CI_Form_validation 
 {
 protected $ CI; 
 
 public function __construct（$ rules = array（））
 {
 parent :: __ construct（$ rules）; 
 $ this-> CI =& get_instance（）; 
} 
 
 public function validate（）
 {
 $ this-> CI-> form_validation-> set_rules（'value'，'value' 
'trim | required | integer | check_value ['。$ this-> CI-> input-> post（'unit'）。 
 $ this-> CI-> form_validation-> set_rules（'unit'，'unit'，'trim | required'）; 
} 
 
 public function check_value（$ value，$ unit）
 {
 if（$ value> = 100）
 {
 return TRUE; 
} 
 else 
 {
 $ this-> CI-> form_validation-> set_message（'check_value'，
'％s必须大于或等于100。 
 return FALSE; 
} 
} 
  

MY_Custom_form_validation.php

 <？php 
 class MY_Custom_form_validation extends CI_Form_validation 
 {
 protected $ CI; 
 
 public function __construct（$ rules = array（））
 {
 parent :: __ construct（$ rules）; 
 $ this-> CI =& get_instance（）; 
} 
 
 public function validate（）
 {
 $ this-> CI-> form_validation-> set_rules（'value'，'value' 
'trim | required | integer | check_value ['。$ this-> CI-> input-> post（'unit'）。 
 $ this-> CI-> form_validation-> set_rules（'unit'，'unit'，'trim | required'）; 
} 
 
 public function check_value（$ value，$ unit）
 {
 if（$ value> = 100）
 {
 return TRUE; 
} 
 else 
 {
 $ this-> CI-> form_validation-> set_message（'check_value'，
'％s必须大于或等于100。 
 return FALSE; 
} 
} 
  

Form.php ，请注意确定CASE 和不正确

 <？php 
 class form extends CI_Controller 
 {
 
 public function __construct（）
 {
 parent :: __ construct 
 $ this-> load-> helper（array（'form'，'url'））; 
 // OK CASE 
 $ this-> load-> library（'form_validation'）; 
 // NOK CASE 
 $ this-> load-> library（'my_custom_form_validation'）; 
 $ this-> load-> model（'prf_model'）; 
} 
 
 public function submit（）
 {
 $ data ['username'] ='my_username'; 
 $ data ['title'] ='提交PRF'; 
 $ data ['last_order_submission'] = 
（$ this-> prf_model-> get_last_prf_order_submission（）+ 1）; 
 
 // OK CASE 
 $ this-> form_validation-> validate（）; 
 // NOK CASE 
 $ this-> my_custom_form_validation-> validate（）; 
 
 if（！$ this-> form_validation-> run（））
 {
 $ this-> load-> view（'templates / header'， $ data）; 
 $ this-> load-> view（'pages / form'，$ data）; 
 $ this-> load-> view（'templates / footer'，$ data）; 
} 
 else 
 {
 $ this-> _save_to_database（$ _Post）; 
 redirect（'form / success'）; 
} 
} 
  




解决方案

I面对同样的问题之前，在CI你不能只使用任何自定义验证名称，它应该是MY_Form_validation。选中此项，代码Igniter自定义验证

Basically I want to use a callback validation method inside an extended class of Form_validation.

OK CASE

I make MY_Form_validation class with the public callback method.

Loaded in my controller as:

public function __construct()
{
    parent::__construct();
    $this->load->helper(array('form', 'url'));
    $this->load->library('form_validation'); 
}

used in this controller as:

$this->form_validation->validate();

I use it like this inside the custom form class:

$this->CI->form_validation->set_rules('field', 'field', 'check_callback');

Note that it is not called as callback_<name of method> which is I do not know either why it only works without the callback_ prefix when called inside its own class.

NOK CASE

I make MY_Custom_form_validation class with the public callback method.

Loaded in my controller as:

public function __construct()
{
    parent::__construct();
    $this->load->helper(array('form', 'url'));
    $this->load->library('form_validation');
    $this->load->library('my_custom_form_validation');
}

$this->my_custom_form_validation->validate();

Same settings as OK CASE when used in set_rules but this time I get the following error:

Unable to access an error message corresponding to your field name field.(check_callback)

Why is this happening? They only differed in file name and way of loading! Did I miss something here?

Or there should only be ONE extended MY_Form_validation that will contain the entire validation for the entire project? Does CI really prevents this custom class aside from MY_Form_validation?

---

MY_Form_validation.php

<?php
class MY_Form_validation extends CI_Form_validation
{
    protected $CI;

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

    public function validate()
    {
        $this->CI->form_validation->set_rules('value', 'value',
            'trim|required|integer|check_value['.$this->CI->input->post('unit').']');
        $this->CI->form_validation->set_rules('unit', 'unit', 'trim|required');
    }

    public function check_value($value, $unit)
    {
        if($value >= 100)
        {
            return TRUE;
        }
        else
        {
            $this->CI->form_validation->set_message('check_value',
                'The %s must be greater than or equal 100.');
            return FALSE;
        }
    }

MY_Custom_form_validation.php

<?php
class MY_Custom_form_validation extends CI_Form_validation
{
    protected $CI;

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

    public function validate()
    {
        $this->CI->form_validation->set_rules('value', 'value',
            'trim|required|integer|check_value['.$this->CI->input->post('unit').']');
        $this->CI->form_validation->set_rules('unit', 'unit', 'trim|required');
    }

    public function check_value($value, $unit)
    {
        if($value >= 100)
        {
            return TRUE;
        }
        else
        {
            $this->CI->form_validation->set_message('check_value',
                'The %s must be greater than or equal 100.');
            return FALSE;
        }
    }

Form.php, please note of the OK CASE and NOT OK

<?php
class Form extends CI_Controller
{

    public function __construct()
    {
        parent::__construct();
        $this->load->helper(array('form', 'url'));
        // OK CASE
        $this->load->library('form_validation');
        // NOK CASE
        $this->load->library('my_custom_form_validation');
        $this->load->model('prf_model');
    }

    public function submit()
    {
        $data['username'] = 'my_username';
        $data['title'] = 'Submit a PRF';
        $data['last_order_submission'] =
            ($this->prf_model->get_last_prf_order_submission()+1);

        // OK CASE
        $this->form_validation->validate();
        // NOK CASE
        $this->my_custom_form_validation->validate();

        if(!$this->form_validation->run())
        {
            $this->load->view('templates/header', $data);
            $this->load->view('pages/form', $data);
            $this->load->view('templates/footer', $data);
        }
        else
        {
            $this->_save_to_database($_POST);
            redirect('form/success');
        }
    }

解决方案

I faced the same issue before, in CI you cant just use any custom validation name it should be MY_Form_validation. Check this, Code Igniter Custom Validation

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