Callback when using form_validation.php $config array

[eluser]Iván Argulo[/eluser]
Maybe it's not the point, but #1 works, #2 doesn't work

#1

Code:

$config = array(
    array(
        'field' => 'choice',
        'label' => 'Dropdown Choice',
        'rules' => 'required|is_natural_no_zero'
    )                
);

#2

Code:

$config = array(
    'field' => 'choice',
    'label' => 'Dropdown Choice',
    'rules' => 'required|is_natural_no_zero'
);