protected function deleteCategoryGroup()
    {
        $this->controlAccess('category_group_delete');

        if ($this->category_group->delete($this->data_category_group['category_group_id'])) {
            $this->redirect('admin/content/category-group', $this->text('Category group has been deleted'), 'success');
        }

        $this->redirect('', $this->text('Category group has not been deleted'), 'warning');
    }