Validation Callbacks!!!

[eluser]Bramme[/eluser]
I don't see a reason why you would extend the CI_Validation library. And you started off good, you have to make your own custom callbacks...

Code:

$rules['grupos1'] = 'callback_empty';
$rules['grupos2'] = 'required';
//or
$rules['grupos1'] = 'callback_empty';
$rules['grupos2'] = 'required';
//don't work

$grupos_1 = $this->input->post('grupos1');
if (empty($grupos_1)) echo 'TRUE';
//print TRUE

You don't have to echo true though. Add this to your controller:

Code:

function empty($str) {
    
    if(empty($str)) {
        return true;
    } else {
        $this->validation->set_message('empty', 'First group is not empty');
        return false;
    }
}