protected function updateCollectionItem()
    {
        $this->controlAccess('collection_item_edit');

        if ($this->collection_item->update($this->data_collection_item['collection_item_id'], $this->getSubmitted())) {
            $url = "admin/content/collection-item/{$this->data_collection['collection_id']}";
            $this->redirect($url, $this->text('Collection item has been updated'), 'success');
        }

        $this->redirect('', $this->text('Collection item has not been updated'), 'warning');
    }