2.1 常用函数

$app = JFactory::getApplication();返回 JapplicationCms对象
 $input = $app->input;  返回一个
 $input->get($name,$default,$filter);获取_Request[]数组中的数据

 JFactory::getDocument()->setMineEncoding(‘application/json‘);

 $user = JFactory::getUser(); 返回JUser
 $user->get(‘id‘);获取id

 $db = JFactory::getDbo();
 $query = $db->getQuery(true);
 $query->select();
 $query->delete();
 $query->insert();
 $query->from();
 $query->join();
 $query->where();
 $query->order();
 $db->setQuery($query);
 $db->loadObject();
 $db->loadObjectList();

$this->getModel($name);