如何在cakephp中將字段的值增加1？

Question

我試圖每當調用函數時增加一個字段的值。但問題是，它增加了3而不是1，雖然我已經加了+1。下面是我的代碼。

$this->loadModel('Listing'); 
$this->Listing->id = $listing_id; 
$this->Listing->updateAll(array(
     'Listing.total_views' => 'Listing.total_views + 1'), 
      array('Listing.id' => $listing_id)); 

Answer 1

$this->loadModel('Listing'); 
$this->Listing->id = $listing_id; 
$this->Listing->updateAll(array(
     'Listing.total_views' => 'Listing.total_views + 1'), 
      array('Listing.id' => $listing_id)); 

Answer 2

使用此代碼更新。它是更好地獲取從數據庫共TOTAL_VIEWS，然後增加它和更新數據庫

$this->loadModel('Listing'); 
$this->Listing->id = $listing_id; 
$count=$this->Listing->field('total_views'); 
$count=$count+1; 
$this->Listing->saveField('Listing.total_views',$count); 

如果問題仍然存在，那麼你的代碼必須運行多次。

http://book.cakephp.org/2.0/en/models/retrieving-your-data.html#model-field

http://book.cakephp.org/2.0/en/models/saving-your-data.html#model-savefield-string-fieldname-string-fieldvalue-validate-false