/**
* 异步删除话题
*/
public function actionDoDelTopic()
{
$id = $_GET['tid'];
$model = new GroupTopic();
$topic = $model->loadTopic($id);
$gid = $topic['gid'];
$return = $topic->delTopic();
if (Yii::app()->request->isAjaxRequest) {
echo !$return ? -1 : 1;
} else {
$this->redirect(array('group/show', 'gid' => $gid));
}
}
