public function rules()
{
return [[['id', 'language'], 'required'], [['id'], 'integer'], [['id'], 'exist', 'targetClass' => '\\lajax\\translatemanager\\models\\LanguageSource'], [['language'], 'exist', 'targetClass' => '\\lajax\\translatemanager\\models\\Language', 'targetAttribute' => 'language_id'], [['translation'], 'string'], [['language'], 'string', 'max' => 5]];
}