彭和平垃圾回收机制
有一个功能:
删除某些内容后,能够恢复原有的内容。这是什么原理?
是不是可以把你想删除的东西存放到另一个表里面。
然后如果你想恢复的话从另一个表里面把它在更新下?
$sql="delete from `#@__skupdate_class` where id=".$id.""; $bool = $dsql->ExecuteNoneQuery($sql); if(!$bool) { ShowMsg("课程信息回收站删除失败",'-1'); exit(); }else{ ShowMsg("课程信息回收站删除成功",'update_class.php?dopost=recycling&page='.$page.''); exit(); }
$sql="Update `#@__skupdate_class` set state=1 where id=".$id.""; $bool = $dsql->ExecuteNoneQuery($sql); if(!$bool) { ShowMsg("课程信息恢复失败",'-1'); exit(); }else{ ShowMsg("课程信息恢复成功",'update_class.php?dopost=recycling&page='.$page.''); exit(); }
这是几个意思明明已经删除了啊?
delete from `#@__skupdate_class` where id=".$id."
求解
回复讨论(解决方案)
好像明白了。我在这里少写了代码了!!
$sql="Update `#@__skupdate_class` set state=2 where id=".$id.""; $bool = $dsql->ExecuteNoneQuery($sql); if(!$bool) { ShowMsg("课程信息删除失败",'-1'); exit(); }else{ ShowMsg("课程信息删除成功",'update_class.php?page='.$page.''); exit(); }
其实就是更新到别的地方了。然后还原的时候在根据state把它还原回来。。搞定了 。不浪费大神们时间了 。。。。以后我看清楚了再发!
数据表定义status字段 0表示删除,1表示启用
当你新增数据的时候 status的状态为1,当你删除的时候status的状态为0
恢复数据,直接更改status状态属性即可。
数据表定义status字段 0表示删除,1表示启用
当你新增数据的时候 status的状态为1,当你删除的时候status的状态为0
恢复数据,直接更改status状态属性即可。
恩。我在想你头像的问题。。
哈哈

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