Symfony2和Doctrine,Column不能与OneToOne关系为空

Question

这是一个实体(EDITED:完整文件内容)

// Eve\MoonBundle\Entity\MoonMaterial.php

namespace Eve\MoonBundle\Entity;

use Doctrine\ORM\Mapping as ORM;

//use Doctrine\Common\Collections\ArrayCollection;

/**
 * @ORM\Table(name="_moon_material")
 * @ORM\Entity()
 */
class MoonMaterial
{

    public function __construct()
    {
        //$this->invTypes_byTypeID = new ArrayCollection();
    }

    // relations start

    /**
     * @ORM\OneToOne(targetEntity="Eve\DumpBundle\Entity\invTypes")
     * @ORM\JoinColumn(name="typeID", referencedColumnName="typeID")
     */
    private $invTypes_byTypeID;

    public function get_invTypes_byTypeID()
    {
        return $this->invTypes_byTypeID;
    }

    // relations end

    /**
     * @ORM\Column(name="userID", type="integer", nullable=false)
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="NONE")
     */
    private $userID;

    /**
     * @ORM\Column(name="moonID", type="integer", nullable=false)
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="NONE")
     */
    private $moonID;

    /**
     * @ORM\Column(name="typeID", type="integer", nullable=false)
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="NONE")
     */
    private $typeID;

    /**
     * Set userID
     *
     * @param integer $userID
     * @return MoonMaterial
     */
    public function setUserID($userID)
    {
        $this->userID = $userID;

        return $this;
    }

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

    /**
     * Set moonID
     *
     * @param integer $moonID
     * @return MoonMaterial
     */
    public function setMoonID($moonID)
    {
        $this->moonID = $moonID;

        return $this;
    }

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

    /**
     * Set typeID
     *
     * @param integer $typeID
     * @return MoonMaterial
     */
    public function setTypeID($typeID)
    {
        $this->typeID = $typeID;

        return $this;
    }

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

}

控制器中的代码(EDITED)

// Eve\MoonBundle\Controller\IndexController.php
namespace Eve\MoonBundle\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Eve\MoonBundle\Entity\MoonMaterial;

class IndexController extends Controller
{

    public function defaultAction($moonName)
    {
        // ...
        $dc = $this->getDoctrine();
        $form = $this
            ->createFormBuilder()
            ->add('typeID', 'choice', $choiceSettings)
            ->getForm();

        if ($this->getRequest()->isMethod('post'))
        {
            $form->bind($this->getRequest());
            {
                $data = $form->getData();
                $typeID = $data['typeID'];

                if (is_int($typeID))
                {
                    $em = $dc->getEntityManager();
                    $mm = $em->getRepository('EveMoonBundle:MoonMaterial');

                    $result = $mm->findOneBy(array(
                            'userID' => $this->getUser()->getID(),
                            'typeID' => $typeID,
                            'moonID' => $moon->getItemID()));

                    if ($result)
                    {
                        $em->remove($result);
                        $em->flush();
                    }

                    $moonMaterial = new MoonMaterial();
                    $moonMaterial
                        ->setUserID($this->getUser()->getID())
                        ->setTypeID($typeID)
                        ->setMoonID($moon->getItemID());


                    $em->persist($moonMaterial);
                    $em->flush();
                }
            }
        }

        $twig = 'EveMoonBundle:Index:default.html.twig';
        return $this->render($twig, array(
                'formAddMoonMaterial' => $form->createView()));
    }

}

当我尝试这个时,我得到错误

An exception occurred while executing 'INSERT INTO _moon_material (userID, moonID, typeID) VALUES (?, ?, ?)' with params {"1":38,"2":40001583,"3":null}:

SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'typeID' cannot be null 

但是,当我评论OneToOne(上面的代码)关系时,它正常工作,所以主要的麻烦在于描述OneToOne关系...请帮忙处理它

我想要的是,如果存在于表"_moon_material"中,我想要重写条目,或者如果不存在则只需写入

ps:我只需要"读"这个关系(按ID加入名称)

Answer 1

如果要允许设置空值

@ORM\JoinColumn(name="typeID", referencedColumnName="typeID")

至

@ORM\JoinColumn(name="typeID", referencedColumnName="typeID", nullable=true)

你应该让列'typeID'也可以为空.(请参阅如何修改MySQL列以允许NULL？)

如果您不想拥有NULL,请执行相反的操作.