/**
* @param string $attribute
*/
public function categoryIsExist($attribute)
{
$thumbsCategoryManager = new ThumbsCategoryManager();
$category = $thumbsCategoryManager->getCategoryByName($this->{$attribute});
if (!is_null($category)) {
$this->addError('thumbsCategoryId', 'Thumbs category by name "' . $this->{$attribute} . '" already exist');
}
}