使用Symfony2過濾信息和自定義存儲庫？

Question

從GET參數中，我想從我的實體獲取信息。

我認爲我創建了一個表格3種選擇（不是多個的），是這樣的：

http://pix.toile-libre.org/upload/original/1393414663.png

如果我只由用戶本人在url得到這個過濾：類別= 0 &用戶= 6個&狀態= 0

我不得不處理0值...

這種形式用於過濾我的任務。

這是我在我的控制器行動的一部分：

if($request->query->has('user')) { 
    $category_id = $request->query->get('category'); 
    $user_id = $request->query->get('user'); 
    $status_id = $request->query->get('status'); 

    // A little test to see if it works. 
    echo $category_id . '<br>' . $user_id . '<br>' . $status_id; 

    // I will pass these variables to a repository 
    $tasks = $em->getRepository('LanCrmBundle:Task')->findFiltered($category_id, $user_id, $status_id); 
} else { 
    $tasks = $em->getRepository('LanCrmBundle:Task')->findAll(); 
} 

我創建了一個倉庫用這種方法：

public function findFiltered($category_id, $user_id, $status_id) 
{ 
    /** 
    * Get filtered tasks. 
    * 
    * Get only title, priority, created_at, category_id, user_id and status_id fields (optimization) 
    * 
    * Where field category_id = $category_id unless $category_id is smaller than 1 (not secure enough) 
    * Where field user_id = $user_id unless $user_id is smaller than 1 (not secure enough) 
    * Where field status_id = $status_id unless $status_id is smaller than 1 (not secure enough) 
    * Should I do these tests here or in the controller? 
    */ 
} 

如何做到這一點的查詢？你有沒有其他優雅的建議來解決這個問題？

Answer 1

你可以試試：

public function findFiltered($category_id, $user_id, $status_id) 
{ 
    $queryBuilder = $this->createQueryBuilder('t'); 

    if(!empty($category_id) && is_numeric($category_id)) { 
     $queryBuilder->andWhere('t.category = :category')->setParameter('category', $category_id); 
    } 

    if(!empty($user_id) && is_numeric($user_id)) { 
     $queryBuilder->andWhere('t.user = :user')->setParameter('user', $user_id); 
    } 

    if(!empty($status_id) && is_numeric($status_id)) { 
     $queryBuilder->andWhere('t.status = :status')->setParameter('status', $status_id); 
    } 

    return $queryBuilder->getQuery()->getResult(); 

}