public static function update($id)
{
self::check_admin_logged_in();
$attributes = self::get_attributes();
$attributes['id'] = $id;
$attributes['competition_name'] = Competition::find($attributes['competition_id'])->name;
$attributes['competitor_name'] = Competitor::find($attributes['competitor_id'])->name;
$attributes['standing'] = Participant::find($id)->standing;
$participant = new Participant($attributes);
$errors = $participant->validate_number();
if (count($errors) == 0) {
$participant->update();
Redirect::to('/competition/' . $participant->competition_id . '/participants', array('message' => 'Kilpailijan numeroa muokattu onnistuneesti!'));
} else {
self::edit_view(array(Competition::find($participant->competition_id)), array(Competitor::find($participant->competitor_id)), $attributes, $errors);
}
}
