protected function deleteField()
    {
        $this->controlAccess('field_delete');

        if ($this->field->delete($this->data_field['field_id'])) {
            $this->redirect('admin/content/field', $this->text('Field has been deleted'), 'success');
        }

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