typo3 main方法里面switch写法

typo3代码 main方法里多个页面的跳转  

                                                     switch($this->lConf ['what_to_display'])

                                                                    case1:break;

                                                                     case2:break;

需要配置flexform.xml,后台选项，还有主代码init里面的$this->what_to_display=$this->pi_getFFvalue($this->cObj->data['pi_flexform'],'what_to_display');

lexform.xml：

   

可以看到图上 locallang_db.xml  里面的what_to_display要对应上

然后就是后台：