Question

我正在创建一个修改KnpPaginatorBundle查询的表单，以显示已过滤的分页结果。

要做到这一点。当表单有效时，我构建查询字符串（连接）与要过滤的必填字段。我用自定义查询设置$ filteredDql变量。问题是它的价值仅保留在第一页。当我更改页面时，它变为NULL。分页重置......

我认为，问题可能是我在块上下文中设置$ filteredDql变量（当表单只有效时）。

如何为整个操作或应用程序范围设置$ filteredDql变量？也许使用参数？我尝试使用控制器中的容器而没有成功使用：

$this->container->setParameter('key', value);
$this->container->getParameter('key');
$this->container->HasParameter('key');

但是这样我得到 500内部服务器错误

以下是代码：

public function indexAction(Request $request, $page)
{
    $filters = new Filters();

    $form = $this->createForm(new FiltersType(), $filters);

    $dql = "SELECT a FROM ViciousAmateurBundle:Post a WHERE a.is_active = true";

    if ($request->isMethod('POST')) {
        $form->bind($request);

        if ($form->isValid()) {
            $country = $filters->getCountry();
            $city = $filters->getCity();
            $gender = $filters->getGender();
            $sexualOrientation = $filters->getSexualOrientation();

            if (isset($country)) {
                $dql .= " AND a.country = '" . $filters->getCountry() . "'";
            }
            if (isset($city)) {
                $dql .= " AND a.city = '" . $filters->getCity() . "'";
            }
            if (isset($gender)) {
                $dql .= " AND a.gender = '" . $filters->getGender() . "'";
            }
            if (isset($sexualOrientation)) {
                $dql .= " AND a.sexual_orientation = '" . $filters->getSexualOrientation() . "'";
            }
            $filteredDql = $dql;
        }
    }

    $em = $this->get('doctrine.orm.entity_manager');

    if (isset($filteredDql)) {
        $query = $em->createQuery($filteredDql);
    } else {
        $query = $em->createQuery($dql);
    }

    $paginator = $this->get('knp_paginator');
    $pagination = $paginator->paginate(
        $query,
        $this->get('request')->query->get('page', $page),
        5
    );

    return $this->render('ViciousAmateurBundle:Default:index.html.twig', array(
        'form' => $form->createView(),
        'pagination' => $pagination
        )
    );
}

Answer 1

最后使用会话变量解决它以存储当前过滤器。会话是应用程序范围或无状态。我很满意这种方法：D

虽然，当数据来自表单验证时，默认情况下KnpPaginatorBundle无法通过分页记住自定义查询“过滤器”（WHERE，GROUP BY，...），这是一种遗憾：S只是通过使用可排序函数来支持它建立链接以排序asc或desc是一种耻辱...

以下是代码：

/**
 * @Route("/{page}", defaults={"page" = 1}, name="homepage")
 * @Route("/")
 * @Template()
 */
public function indexAction(Request $request, $page)
{
    $filters = new Filters();

    $form = $this->createForm(new FiltersType(), $filters);

    $session = $this->getRequest()->getSession();

    if ($session->get('dql') == null) {
        $session->set('dql', "SELECT a FROM ViciousAmateurBundle:Post a WHERE a.is_active = true");
    }

    if ($request->isMethod('POST')) {
        $form->bind($request);

        if ($form->isValid()) {
            $dql = "SELECT a FROM ViciousAmateurBundle:Post a WHERE a.is_active = true";
            $country = $filters->getCountry();
            $city = $filters->getCity();
            $gender = $filters->getGender();
            $sexualOrientation = $filters->getSexualOrientation();

            if (isset($country)) {
                $dql .= " AND a.country = '" . $filters->getCountry() . "'";
            }
            if (isset($city)) {
                $dql .= " AND a.city = '" . $filters->getCity() . "'";
            }
            if (isset($gender)) {
                $dql .= " AND a.gender = '" . $filters->getGender() . "'";
            }
            if (isset($sexualOrientation)) {
                $dql .= " AND a.sexual_orientation = '" . $filters->getSexualOrientation() . "'";
            }

            $session->set('dql', $dql);
        }
    }

    $em = $this->get('doctrine.orm.entity_manager');

    $query = $em->createQuery($session->get('dql'));

    $paginator = $this->get('knp_paginator');
    $pagination = $paginator->paginate(
        $query,
        $this->get('request')->query->get('page', $page),
        5
    );

    return $this->render('ViciousAmateurBundle:Default:index.html.twig', array(
        'form' => $form->createView(),
        'pagination' => $pagination
        )
    );
}

Symfony KnpPaginator查询表单字段中的自定义过滤器？

1 个答案: