public function remove_field($key, $lang = NULL)
{
if (!$this->id) {
return false;
}
$dicval = DicFieldVal::firstOrNew(array('dicval_id' => $this->id, 'language' => $lang, 'key' => $key));
$dicval->delete();
unset($this->{$key});
return $dicval;
}
