[eluser]flyer[/eluser]
Hi all,
Really struggling to get to grips with a customised MY_Validation. The situation is I want a customised function similar to xss_clean which basically converts a text input string to a modified version (e.g. 'Bob' going to 'Hello Bob Hello'). I also want the validation function to be globally accessible i.e. not just a callback function within the Controller.
To this end I created a very simple custom MY_Validation.php vaguely following the patterns of the xss_clean function:
Code:
MY_Validation.php:
<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
class MY_Validation extends CI_Validation {
function MY_Validation()
{
parent::CI_Validation();
}
function customise_string( $str )
{
$_POST[$this->_current_field] = "Hello " + $str + " Hello";
}
}
?>
The idea is if I can do this simple conversion, I can then move onto more complex modifications.
The code then used in the controller is:
Code:
function customiseStr()
{
$this->load->helper(array('form', 'url'));
$this->load->library('validation');
$rules['customStr'] = "required|customise_string";
$this->validation->set_rules($rules);
$fields['customStr'] = "Customised String";
$this->validation->set_fields($fields);
$this->validation->run();
$this->load->view('content/customiseStr_view' );
}
and the view is:
Code:
<html>
<head>
<title></title>
</head>
<body>
<?=$this->validation->error_string; ?>
<?=form_open ('content/customiseStr' );?>
<?php
$customStr_value = ($this->validation->customStr == '') ? "String not yet entered" : $this->validation->customStr;
?>
<h5>Custom String:</h5>
<?=form_input ('customStr', $customStr_value)?>
<?=form_submit('submit', 'Customise')?>
<?=form_close()?>
</body>
</html>
All looks very simple and as if it should work. Note the form simply submits to itself, then puts the modified string if available into the text input box. If I change customise_string to xss_clean in the $rules['customStr'] definition then works exactly how expected. i.e. on submit the string is xss_clean'ed then returned to the form and displayed in the text input box.
When the customise_string function is called in the MY_Validation class, I have been able to determine that before the $_POST variable is changed it equals the correct posted value, i.e. inputed string. But after is changed it equals null.
Is the problem that I need to treat the global $_POST in a special way when modifying it? Or is my code wrong in some other way?
Many thanks in advance.
Eddie
