页面重新加载时自动删除

导航栏时如何自动重新加载页面？我有这行代码。 此代码会在血液活动已超过活动结束日期时删除通知。

我有一张这样的桌子。

Latest Blood Campaign
---------------------------------------------------
id      CampaignTitle  CampaignAddress CampaignStartDate CampaignEndDate
1       Blood Letting   New York         2016-02-24      2016-02-26


Admin Send Notifications
------------------------------------------------------------
id       receiver        messageBody
1          jk             Please come to our blood campaign

My code to delete notification.

          <?php 
          $dateToday2 = '2016-02-29';
          $latest2 = LatestBloodCampaign::all();                        
          foreach ( $latest2 as $data2 )
          if($dateToday2 <= $data2->campaignEndDate)
          { }else{ 
          DB::table('admin_send_notifications')
                          ->where('receiver', 'jk')
                          ->where('messageBody', $notification->messageBody)
                          ->delete();
          } ?>

我将这行代码放入通知页面，因此当它加载时它会自动删除，但当它只单击导航栏时，它不会删除。