Question

我正在使用KnpPaginatorBundle，我在Repository中使用QueryBuilder来选择数据。我想知道如何在查询中传递Form发送的参数排序和方向。

这是形式：

<form action="" method="get" class="form_sort" id="myForm">
                        <span class="manage_title">Sort by:</span>
                            <select class="select_styled white_select" id="sort_list" name="option">
                                <option value="">-------</option>
        {{ knp_pagination_sortable(pagination, 'Country A-Z', 'country', {'sort': 'country', 'direction': 'asc'}) }}
        {{ knp_pagination_sortable(pagination, 'Country Z-A', 'country', {'sort': 'country', 'direction': 'desc'}) }}
        {{ knp_pagination_sortable(pagination, 'City A-Z', 'destination', {'sort': 'destination', 'direction': 'asc'}) }}
        {{ knp_pagination_sortable(pagination, 'City Z-A', 'destination', {'sort': 'destination', 'direction': 'desc'}) }}
                            </select>
</form>

动作控制器：

public function listAction($page, Request $request)
{
$em = $this->getDoctrine()->getManager();

$paginator  = $this->get('knp_paginator');


$listTravels = $em->getRepository('ProjectTravelBundle:Travel')->getListTravelsFrontend();

$pagination = $paginator->paginate(
    $listTravels,
    $this->get('request')->query->get('page', $page)/*page number*/,
    10/*limit per page*/
);

return $this->render('ProjectFrontendBundle:Frontend:list.html.twig',array(
    'pagination' => $pagination
));
}

TravelReopsitory：

public function getListTravelsFrontend()
{

$qb = $this->createQueryBuilder('t')
    ->leftJoin('t.image', 'i')
    ->addSelect('i')
    ->leftJoin('t.agence', 'a')
    ->addSelect('a')
    ->Where('t.enabled = 1');

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

}

Answer 1

排序是在数据库层上处理（使用mysql ORDER BY），因此您无法从getResult()传递数据数组。您必须将QueryBuilder实例作为目标传递给paginate()电话。 KnpPaginator有特殊的Listener和Walker，它可以根据请求使用正确的ORDER BY修改您的查询，然后为您执行分页。

<强> TravelReopsitory：

public function getListTravelsFrontendQueryBuilder()
{
   $qb = $this->createQueryBuilder('t')
       ->leftJoin('t.image', 'i')
       ->addSelect('i')
       ->leftJoin('t.agence', 'a')
       ->addSelect('a')
       ->Where('t.enabled = 1');

return $qb;
}

动作控制器：

public function listAction($page, Request $request)
{
$em = $this->getDoctrine()->getManager();

$paginator  = $this->get('knp_paginator');

$qb = $em->getRepository('ProjectTravelBundle:Travel')->getListTravelsFrontendQueryBuilder();

$pagination = $paginator->paginate(
    $qb,
    $request->query->get('page', $page)/*page number*/,
    10/*limit per page*/
);

return $this->render('ProjectFrontendBundle:Frontend:list.html.twig',array(
    'pagination' => $pagination
));
}

Symfony2，如何使用KnpPaginatorBundle和QueryBuilder传递参数排序和方向

1 个答案: