One Set of Fields or Another Required

[eluser]alexwenzel[/eluser]
In my validation callback i would simply check if some of the other input fields are filled.

Code:

function my_callback_field1($xy) {

if ( ! $this->input->post('field2')) {
// not passed
}

// passed
}

function my_callback_field2($xy) {

if ( ! $this->input->post('field1')) {
// not passed
}

// passed
}

Without knowing if this works, just as an quick idea.