Called by the menu system to validate an argument.
This checks to see if this is a 'soft fail', which means that if the argument fails to validate, but there is an action to take anyway, then validation cannot actually fail.
function validate_argument($arg) {
$validate_info = $this
->default_actions($this->options['validate']['fail']);
if (empty($validate_info['hard fail'])) {
return TRUE;
}
$rc = $this
->validateArgument($arg);
// If the validator has changed the validate fail condition to a
// soft fail, deal with that:
$validate_info = $this
->default_actions($this->options['validate']['fail']);
if (empty($validate_info['hard fail'])) {
return TRUE;
}
return $rc;
}