在控制器symfony3中自动设置一对一关系中的关系值答案

【问题标题】：Automatically set relationship value in one-to-one relationship in controller symfony3在控制器symfony3中自动设置一对一关系中的关系值
【发布时间】：2018-03-12 22:23:22
【问题描述】：

一些背景信息。我有两个具有双向关系的实体：本质上，一个申请表可以只有一个推荐表。当推荐人填写表格时，我希望自动获得它，并且仅根据他们在我创建的自定义表单页面上输入的特定代码选择相关的申请表（保护其他用户的数据）。我不确定它是怎么发生的，但我让它工作了一次，但由于某种未知的原因，它停止了，并在我的数据库中的推荐表单中为申请人表单 ID 添加了“NULL”。我会尽可能提供所有信息：

RecommendationForm 实体：

namespace AppBundle\Entity;

use Doctrine\ORM\Mapping as ORM;

/**
 * RecommendationForm
 *
 * @ORM\Table(name="recommendation_form")
 * @ORM\Entity(repositoryClass="AppBundle\Repository\RecommendationFormRepository")
 */
class RecommendationForm
{
    /**
     * @var int
     *
     * @ORM\Column(name="id", type="integer")
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    private $id;

    /**
     * One RecommendationForm has One ApplicantForm.
     * @ORM\OneToOne(targetEntity="ApplicantForm", inversedBy="recommendation_form")
     * @ORM\JoinColumn(name="applicant_form_id", referencedColumnName="id")
     */
    private $applicant_form;

    //....

    public function __construct($applicant_form) {
        date_default_timezone_set('America/New_York');

        $this->applicant_form = $applicant_form;

        $this->submitDate = new \DateTime("now");
    }


    /**
     * Get id
     *
     * @return integer
     */
    public function getId()
    {
        return $this->id;
    }


    // /**
    //  * Set applicantForm
    //  *
    //  * @param integer $applicant_form
    //  *
    //  * @return RecommendationForm
    //  */
    // public function setApplicantForm($applicant_form)
    // {
    //     $this->applicant_form = $applicant_form;

    //     return $this;
    // }

    /**
     * Get applicantForm
     *
     * @return integer
     */
    public function getApplicantForm()
    {
        return $this->applicant_form;
    }

//....
}

ApplicantForm 实体：

namespace AppBundle\Entity;

use Doctrine\ORM\Mapping as ORM;
use chriskacerguis\Randomstring\Randomstring;

/**
 * ApplicantForm
 *
 * @ORM\Table(name="applicant_form")
 * @ORM\Entity(repositoryClass="AppBundle\Repository\ApplicantFormRepository")
 */
class ApplicantForm
{
    /**
     * @var int
     *
     * @ORM\Column(name="id", type="integer")
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    private $id;

    /**
     * One ApplicantForm has One RecommendationForm.
     * @ORM\OneToOne(targetEntity="RecommendationForm", mappedBy="applicant_form")
     */
    private $recommendation_form;

    /**
     * @var string
     *
     * @ORM\Column(name="accessCode", type="string", length=75, unique=true)
     */
    private $accessCode;

    //....

    public function __construct() {

        $random = new \chriskacerguis\Randomstring\Randomstring();

        $this->accessCode = $random->generate(15, true);
    }

//...
}

推荐控制器：

namespace AppBundle\Controller;

use AppBundle\Entity\RecommendationForm;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Method;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Form\Extension\Core\Type\EmailType;
use Symfony\Component\Form\Extension\Core\Type\PasswordType;
use Symfony\Component\Form\Extension\Core\Type\SubmitType;

/**
 * Recommendationform controller.
 *
 * @Route("recommendationform")
 */
class RecommendationFormController extends Controller
{
    private $accessCode;
    private $applicantForm;
    private $applicantFormID;
    /**
     * Lists all RecommendationForm entities.
     *
     * @Route("/", name="recommendationform_index")
     * @Method({"GET", "POST"})
     */
    public function indexAction(Request $request)
    {
        $em = $this->getDoctrine()->getManager();

        $data = array();
        $form = $this->createFormBuilder($data)
            ->add('email', EmailType::class)
            ->add('accessCodeSS', PasswordType::class)
            ->add('submit', SubmitType::class)
            ->getForm();

        $form->handleRequest($request);

        if ($form->isSubmitted() && $form->isValid()) {
            $accessCode = $form["accessCodeSS"]->getData();

            return $this->redirectToRoute('recommendationform_new');
        }

        return $this->render('recommendationform/index.html.twig', array(
                'form' => $form->createView(),
        ));
    }

    /**
     * Creates a new RecommendationForm entity.
     *
     * @Route("/new", name="recommendationform_new")
     * @Method({"GET", "POST"})
     */
    public function newAction(Request $request)
    {
        if(isset($_POST["accessCodeSS"])){

            $this->accessCode = $_POST["accessCodeSS"];

            $accessCode = $this->accessCode;
            $em = $this->getDoctrine()->getManager();

            $query = $em->createQuery('SELECT u FROM AppBundle:ApplicantForm u WHERE u.accessCode = :accessCode')
                ->setParameter('accessCode', $accessCode);
            $applicantFormID = $query->getResult();

            $this->applicantForm = $applicantFormID[0];

        }

        var_dump($this->applicantForm);

        $RecommendationForm = new Recommendationform($this->applicantForm);

        $form = $this->createForm('AppBundle\Form\RecommendationFormType', $RecommendationForm);
        $form->handleRequest($request);

        if ($form->isSubmitted() && $form->isValid()) {
            $em = $this->getDoctrine()->getManager();
            $em->persist($RecommendationForm);
            $em->flush();

            return $this->redirectToRoute('recommendationform_show', array('id' => $RecommendationForm->getId()));
        }

            return $this->render('recommendationform/new.html.twig', array(
                'RecommendationForm' => $RecommendationForm,
                'form' => $form->createView(),
            ));
    }

    /**
     * Finds and displays a RecommendationForm entity.
     *
     * @Route("/{id}", name="recommendationform_show")
     * @Method("GET")
     */
    public function showAction(RecommendationForm $RecommendationForm)
    {
        $deleteForm = $this->createDeleteForm($RecommendationForm);

        return $this->render('recommendationform/show.html.twig', array(
            'RecommendationForm' => $RecommendationForm,
            'delete_form' => $deleteForm->createView(),
        ));
    }

    /**
     * Displays a form to edit an existing RecommendationForm entity.
     *
     * @Route("/{id}/edit", name="recommendationform_edit")
     * @Method({"GET", "POST"})
     */
    public function editAction(Request $request, RecommendationForm $RecommendationForm)
    {
        $deleteForm = $this->createDeleteForm($RecommendationForm);
        $editForm = $this->createForm('AppBundle\Form\RecommendationFormType', $RecommendationForm);
        $editForm->handleRequest($request);

        if ($editForm->isSubmitted() && $editForm->isValid()) {
            $this->getDoctrine()->getManager()->flush();

            return $this->redirectToRoute('recommendationform_edit', array('id' => $RecommendationForm->getId()));
        }

        return $this->render('recommendationform/edit.html.twig', array(
            'RecommendationForm' => $RecommendationForm,
            'edit_form' => $editForm->createView(),
            'delete_form' => $deleteForm->createView(),
        ));
    }

    /**
     * Deletes a RecommendationForm entity.
     *
     * @Route("/{id}", name="recommendationform_delete")
     * @Method("DELETE")
     */
    public function deleteAction(Request $request, RecommendationForm $RecommendationForm)
    {
        $form = $this->createDeleteForm($RecommendationForm);
        $form->handleRequest($request);

        if ($form->isSubmitted() && $form->isValid()) {
            $em = $this->getDoctrine()->getManager();
            $em->remove($RecommendationForm);
            $em->flush();
        }

        return $this->redirectToRoute('recommendationform_index');
    }

    /**
     * Creates a form to delete a RecommendationForm entity.
     *
     * @param RecommendationForm $RecommendationForm The RecommendationForm entity
     *
     * @return \Symfony\Component\Form\Form The form
     */
    private function createDeleteForm(RecommendationForm $RecommendationForm)
    {
        return $this->createFormBuilder()
            ->setAction($this->generateUrl('recommendationform_delete', array('id' => $RecommendationForm->getId())))
            ->setMethod('DELETE')
            ->getForm()
        ;
    }
}

我在整个互联网上搜索，但找不到答案或弄清楚它是如何停止工作的。

【问题讨论】：

标签： php symfony doctrine symfony-3.4

【解决方案1】：

我想出了我改变了什么，我会把答案放在这里，以防有人想这样做。我正在使用不同的表单方法并将表单的原始方法从“GET”更改为 POST（并且对控制器中值的所有调用都从“GET”更改为“POST”）。一时兴起，我把它改回来，它又能正常工作了。我很确定我更改了它，因为我不喜欢 get 方法将查询字符串放在地址栏中，并错误地认为将方法更改为 post 会修复它。如果有人建议使用什么而不是那个，我欢迎所有建议。

控制器不工作：

//...
public function newAction(Request $request)
{
    if(isset($_POST["accessCodeSS"])){

        $this->accessCode = $_POST["accessCodeSS"];
//...
}

正确的工作控制器：

public function newAction(Request $request)
{
    if(isset($_GET["accessCodeSS"])){

        $this->accessCode = $_GET["accessCodeSS"];
//...
}

正确的形式（index.html.twig）：

<form action="{{ path('recommendation_form_new') }}" method="GET">
    <input type="email" name="email" placeholder="Email Address">
    <input type="password" name="accessCodeSS" placeholder="Access Code">
    <input type="submit" name="submit" value="Submit">
</form>

【讨论】：