protected function deleteFile()
    {
        $this->controlAccess('file_delete');

        if ($this->file->deleteAll($this->data_file['file_id'])) {
            $this->redirect('admin/content/file', $this->text('File has been deleted from database and disk'), 'success');
        }

        // Redirect in any case as file can be already deleted from the database
        $this->redirect('admin/content/file', $this->text('An error occurred'), 'warning');
    }