路徑“”的參數“”必須與“ [^ /] ++”（給出的“”）匹配，以生成相應的URL

Question

我有這個Facade實體，每次嘗試修改包含以下細枝的表單時，都會返回此錯誤：

An exception has been thrown during the rendering of a template ("Parameter "buildings_id" for route "addFacade" must match "[^/]++" ("" given) to generate a corresponding URL.").

我的控制器動作：

/**
 * @Route("/{id}/card", name="business_card", methods="GET|POST|DELETE", defaults={"business_id"=1})
 * @param Request $request
 * @param Business $business
 * @return Response
 */
public function show_card(Request $request, Business $business): Response
{

    $businessCard = $business->getBusinessCard();

    $formCard = $this->createForm(BusinessCardType::class, $businessCard);
    $formCard->handleRequest($request);

    if (($formCard->isSubmitted() && $formCard->isValid())) {

        $businessCard = $formCard->getData();
        $em = $this->getDoctrine()->getManager();

        $em->persist($businessCard);
        $em->flush();

        return $this->redirectToRoute('business_card', ['id' => $business->getId()]);
    }

    $dict = array('A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J');
    return $this->render('business/card.html.twig', ['business' => $business, 'formCard' => $formCard->createView(), 'dict' => $dict]);
}

我的樹枝模板：

{% for buildingsInfo in business.businessCard.buildingsInfos %}
{% set idBuildingsInfo = idBuildingsInfo|merge([buildingsInfo.id]) %}
<a class="btn btn-outline-primary mb-3" href="{{ path("addFacade",{"buildings_id": idBuildingsInfo[j] }) }}">Ajouter une façade</a>
{% endfor %}

我試圖轉儲idBuildingsInfo變量，但是數組的所有值都是數字（無null值）。 我還嘗試在控制器中為參數buildings_id添加一個默認值，但是它似乎沒有任何改變。

Answer 1

仔細閱讀錯誤

參數“ buildings_id” ...（給出“”）

您傳遞的參數值為空（“”）

{{ path("addFacade",{"buildings_id": idBuildingsInfo[j] }) }}

是否定義了j ？ 或者該行應如下所示：

{{ path("addFacade",{"buildings_id": idBuildingsInfo["j"] }) }}

Answer 2

我的猜測是該錯誤可能與以下方面有關：

href="{{ path("addFacade",{"buildings_id": idBuildingsInfo[j] }) }}

也許我們會set一個變量為我們的href ，然后逃離那些" S中的需要逃避，我們的代碼將如下所示：

{% for buildingsInfo in business.businessCard.buildingsInfos %}
{% set idBuildingsInfo = idBuildingsInfo|merge([buildingsInfo.id]) %}
{% set path = "\"addFacade\", {\"buildings_id\": idBuildingsInfo[j]" %}
<a class="btn btn-outline-primary mb-3" href="{{ path }}">Ajouter une façade</a>
{% endfor %}

或有點相似。