form_validation config file in codeigniter (and callbacks) - php

Question

After abusing Google for over an hour, I've found no answers to this question :
When using form_validation.php to your validation rules, Is it possible to pass a dynamic value to the callbacks?
array(
'field' => 'passwordrepeat',
'label' => 'סיסמא חוזרת',
'rules' => 'passwordsMatch['myDynamicValue']'
),
This clearly doesn't work as it passes "myDynamicValue" as a string.
Now, because this config file is loaded so early, this only available resource in it is CI_Loader, which doesn't help much, So I can't access the input class.
So my question:
Can a dynamic value pass to the config file, Or should that rule be written inline in the controller itself?

Answer 1

$this->form_validation->set_rules('password1', 'Password', 'trim|required|matches[password2]');
$this->form_validation->set_rules('password2', 'Verify Password', 'trim|required');
This is what I have for setting form validation on two passwords. This is what is what comes after you set all of your rules
if ($this->form_validation->run() == FALSE)
{
//Validation failed
}
else
{
//Validation suceeded carry on
}
Here is a link to some documentation
http://ellislab.com/codeigniter/user-guide/libraries/form_validation.html#validationrules

Answer 2

The answer to this question is a bit embarrassing.
The solution to this is that you can pass other field names to your callbacks.
However, remember that what you're passing is the field and not the actual value.
To get the actual value you'll need to access it through $_POST['field'].
For example the built in Matches function
public function matches($str, $field)
{
if ( ! isset($_POST[$field]))
{
return FALSE;
}
$field = $_POST[$field];
return ($str !== $field) ? FALSE : TRUE;
}
I feel a bit silly :)

Answer 3

The answer to the question is little tricky but it's easy to understand.
The solution for the asked question is here.
Create a form_validation.php file under the application/config/folder.
and past the code as bellow.
$config = array(
array(
'field' => 'passwordrepeat',
'label' => 'סיסמא חוזרת',
'rules' => 'passwordsMatch['myDynamicValue']'
),
);
the rules will loaded automatically available to the $this->form_validation->run(); this method.
Also you can append more array, I mean more rules for the different controller.
Hope this will help you.