CakePHP $ this-＆gt; Model-＆gt;查询返回

Question

当我运行这样的查询时：

$this->User->query("DELETE FROM users WHERE deleted = 1 AND created <= '".$created."'");

我怎么知道运行查询时是否有错误？

如果出现类似错误，我想向用户发送消息：

if(!$this->User->query("DELETE FROM users WHERE deleted = 1 AND created <= '".$created."'"))
     $this->Session->setFlash('There was an error running this query');

此方法始终返回0，但查询正在运行且没有错误

Answer 1

您想知道是否有错误，或者是否删除了任何记录？

您可以使用类似$this->User->deleteAll的内容

$this->User->deleteAll(array(
   'deleted' => 1 
   'created <=' => $created
));

成功时返回布尔值True，失败时返回false。