/**
* Checks to see if any of the forms on this page have invalid messages
* @return boolean
*/
public function hasInvalid()
{
$invalid = parent::hasInvalid();
if ($this->old_position) {
$invalid |= $this->old_position->hasInvalid();
$invalid |= $this->old_person_position->hasInvalid();
}
if ($this->new_position) {
$invalid |= $this->new_position->hasInvalid();
}
return $invalid;
}
