Question

是否可以将总计数与结果一起返回？目前使用此DQL查询来获取我的数组结果，但我还需要返回每个结果的总计数。

   $dql = "SELECT a, a.id, a.status, a.departDate, a.flightNum, a.departHour, a.arrivedHour, a.convocHour, a.convocPlace, a.customerPax, a.customerNote, a.providerPax,a.providerNote
    FROM AppBundle:Assistance a GROUP BY a.id";
    $query = $this->getEntityManager()->createQuery($dql)
        ->setFirstResult($skip)
        ->setMaxResults($take);
    $paginator = new Paginator($query, $fetchJoinCollection = true);

    $c = count($paginator);

    dump($paginator->getIterator()->getArrayCopy());

    return $paginator->getIterator()->getArrayCopy();

Answer 1

我认为不可能，一次性获得结果和总计数，基本上是在幕后，学说执行两个查询：

首先获得物品：

SELECT * FROM tbl
// and optional clausules 
WHERE tbl.active = 1 
GROUP BY tbl.type
ORDER BY tbl.rank
// taking one page
LIMIT 10
OFFSET 20

第二个计数：

SELECT COUNT(*) FROM tbl
// and optional clousules 
WHERE tbl.active = 1 
GROUP BY tbl.type

您可以在symfony2探查器中查看。

所以你几乎没有选择的选择：

返回数组或某种包装器对象

return array("count" => count($paginator), "items" => $paginator->getIterator()->getArrayCopy());

或者如果你真的需要那么为每个项目手动设置

$count = count($paginator);
$items = $paginator->getIterator()->getArrayCopy();
foreach($items as $item) {
    $item->setCount($count);
}

或者为什么不直接返回$ paginator对象？

Answer 2

您还可以使用KnpPaginatorBundle：

public function getItemsAction(Request $request)
{
    $itemsQuery = $this->repository->getItems(); 

    $current = $request->get('page', 1);
    $limit = $request->get('limit', 10);

    $pagination = $this->paginator->paginate($itemsQuery, $current, $limit);

    $pagerResult = [
        'count' => $pagination->getTotalItemCount(),
        'items' => $pagination->getItems(),
        'limit' => $pagination->getItemNumberPerPage(),
        'current' => $pagination->getCurrentPageNumber()
    ];

    return new JsonResponse($pagerResult);
}

使用doctrine paginator返回结果计数

2 个答案: