    public function remove()
    {
        $project = $this->getProject();
        $this->checkCSRFParam();
        $column_id = $this->request->getIntegerParam('column_id');

        if ($this->columnModel->remove($column_id)) {
            $this->flash->success(t('Column removed successfully.'));
        } else {
            $this->flash->failure(t('Unable to remove this column.'));
        }

        $this->response->redirect($this->helper->url->to('ColumnController', 'index', array('project_id' => $project['id'])));
    }