我需要从数据库中找到一行，我正在使用 findOneBy()。
findBy() 和 findOneBy() 以及任何其他 symfony 函数总是为我的 ManyToOne 相关实体返回一个空数组集合。
但是当使用 findAll() 函数并且我遍历集合时，它返回预期的数据。
您会在问题末尾找到控制器函数，其中包含我使用过但不起作用的不同 find 函数。
下面列出的实体：
news 实体与 newsBlocks 实体相关，而 newsBlocks 与 legalNotices 实体相关。
它们都是多对一/一对多关系。
新闻实体
<?php
namespace Honda\MainBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use Doctrine\Common\Collections\ArrayCollection;
use Gedmo\Mapping\Annotation as Gedmo;
use Symfony\Component\Validator\Constraints as Assert;
use Symfony\Component\Validator\Context\ExecutionContextInterface;
/**
* News
*
* @ORM\Table(name="news")
* @ORM\Entity(repositoryClass="Honda\MainBundle\Repository\NewsRepository")
*/
class News
{
use Traits\DistributorTrait,
Traits\StartDateEndDateTrait,
Traits\HomeActivationTrait,
Traits\ActivationTrait,
Traits\RedirectionTrait;
/**
* @var int
*
* @ORM\Column(name="id", type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @var string
*
* @Assert\NotBlank()
* @ORM\Column(name="title", type="string", length=255, nullable=true)
*/
private $title;
/**
* @var string
*
* @Assert\NotBlank()
* @ORM\Column(name="description1", type="text", nullable=true)
*/
private $description1;
/**
* @var integer
*
* @ORM\Column(name="type", type="integer", nullable=true)
*/
private $type;
/**
* @Gedmo\Slug(fields={"title"})
* @ORM\Column(unique=true)
*/
private $slug;
/**
*
* @ORM\ManyToOne(targetEntity="Application\Sonata\MediaBundle\Entity\Media", cascade={"all"}, fetch="LAZY")
* @ORM\JoinColumn(name="image", referencedColumnName="id", onDelete="SET NULL", nullable=true)
*/
protected $image;
/**
*
* @ORM\ManyToOne(targetEntity="Application\Sonata\MediaBundle\Entity\Media", cascade={"all"}, fetch="LAZY")
* @ORM\JoinColumn(name="image_mobile", referencedColumnName="id", onDelete="SET NULL", nullable=true)
*/
protected $image_mobile;
/**
* @var \DateTime
*
* @ORM\Column(name="created_at", type="datetime", nullable=true)
*/
protected $createdAt;
/**
* @Gedmo\SortablePosition
* @ORM\Column(name="position", type="integer")
*/
private $position;
/**
* @ORM\OneToMany(targetEntity="Honda\MainBundle\Entity\NewsBlocks", mappedBy="news", cascade={"persist"})
*/
private $newsBlocks;
/**
* Constructor.
*/
public function __construct()
{
$this->createdAt = new \DateTime('NOW', new \DateTimeZone('Europe/Paris'));
$this->slides = new ArrayCollection();
$this->newsBlocks = new \Doctrine\Common\Collections\ArrayCollection();
}
/**
* @return string
*/
public function __toString()
{
if ($this->getId()) {
return $this->getTitle();
}
return '';
}
/**
* Get id
*
* @return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set title
*
* @param string $title
*
* @return News
*/
public function setTitle($title)
{
$this->title = $title;
return $this;
}
/**
* Get title
*
* @return string
*/
public function getTitle()
{
return $this->title;
}
/**
* Set description1
*
* @param string $description1
*
* @return News
*/
public function setDescription1($description1)
{
$this->description1 = $description1;
return $this;
}
/**
* Get description1
*
* @return string
*/
public function getDescription1()
{
return $this->description1;
}
/**
* Set type
*
* @param integer $type
*
* @return News
*/
public function setType($type)
{
$this->type = $type;
return $this;
}
/**
* Get type
*
* @return integer
*/
public function getType()
{
return $this->type;
}
/**
* Set image
*
* @param \Application\Sonata\MediaBundle\Entity\Media $image
*
* @return News
*/
public function setImage(\Application\Sonata\MediaBundle\Entity\Media $image = null)
{
$this->image = $image;
return $this;
}
/**
* Get image
*
* @return \Application\Sonata\MediaBundle\Entity\Media
*/
public function getImage()
{
return $this->image;
}
/**
* Set slug
*
* @param string $slug
*
* @return News
*/
public function setSlug($slug)
{
$this->slug = $slug;
return $this;
}
/**
* Get slug
*
* @return string
*/
public function getSlug()
{
return $this->slug;
}
/**
* Set createdAt
*
* @param \DateTime $createdAt
* @return News
*/
public function setCreatedAt($createdAt)
{
$this->createdAt = $createdAt;
return $this;
}
/**
* Get createdAt
*
* @return \DateTime
*/
public function getCreatedAt()
{
return $this->createdAt;
}
/**
* Set position
*
* @param integer $position
*
* @return ALaUne
*/
public function setPosition($position)
{
$this->position = $position;
return $this;
}
/**
* Get position
*
* @return integer
*/
public function getPosition()
{
return $this->position;
}
/**
* Set imageMobile.
*
* @param \Application\Sonata\MediaBundle\Entity\Media|null $imageMobile
*
* @return News
*/
public function setImageMobile(\Application\Sonata\MediaBundle\Entity\Media $imageMobile = null)
{
$this->image_mobile = $imageMobile;
return $this;
}
/**
* Get imageMobile.
*
* @return \Application\Sonata\MediaBundle\Entity\Media|null
*/
public function getImageMobile()
{
return $this->image_mobile;
}
/**
* Add newsBlock.
*
* @param \Honda\MainBundle\Entity\NewsBlocks $newsBlock
*
* @return NewNews
*/
public function addNewsBlock(\Honda\MainBundle\Entity\NewsBlocks $newsBlock)
{
if (!$this->newsBlocks->contains($newsBlock)) {
$this->newsBlocks[] = $newsBlock;
$newsBlock->setNews($this);
}
return $this;
}
/**
* Remove newsBlock.
*
* @param \Honda\MainBundle\Entity\NewsBlocks $newsBlock
*
* @return boolean TRUE if this collection contained the specified element, FALSE otherwise.
*/
public function removeNewsBlock(\Honda\MainBundle\Entity\NewsBlocks $newsBlock)
{
if (!$this->newsBlocks->contains($newsBlock)) {
return;
}
$this->newsBlocks->removeElement($newsBlock);
$newsBlock->setNews(null);
return $this;
}
/**
* Get newsBlocks.
*
* @return \Doctrine\Common\Collections\Collection
*/
public function getNewsBlocks()
{
return $this->newsBlocks;
}
}
新闻区块
<?php
namespace Honda\MainBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use Honda\MainBundle\Entity\Traits;
use Doctrine\Common\Collections\ArrayCollection;
use Gedmo\Mapping\Annotation as Gedmo;
/**
* NewsBlocks
*
* @ORM\Table(name="news_blocks")
* @ORM\Entity(repositoryClass="Honda\MainBundle\Repository\NewsBlocksRepository")
*/
class NewsBlocks
{
use Traits\DistributorTrait;
/**
* @var int
*
* @ORM\Column(name="id", type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @var string
*
* @ORM\Column(name="block_name", type="string", length=255)
*/
private $blockName;
/**
* @ORM\OneToMany(targetEntity="Honda\MainBundle\Entity\News\Offer", mappedBy="newsBlockOffer", cascade={"all"})
*/
private $offers;
/**
* @ORM\OneToMany(targetEntity="Honda\MainBundle\Entity\News\Video", mappedBy="newsBlockVideo", cascade={"persist"})
*/
private $videos;
/**
* @ORM\OneToMany(targetEntity="Honda\MainBundle\Entity\News\LegalNotices", mappedBy="newsBlockLegalNotices", cascade={"persist"})
*/
private $legalNotices;
/**
* @ORM\OneToMany(targetEntity="Honda\MainBundle\Entity\News\OfferCarousel", mappedBy="newsOfferBlocks", cascade={"persist"})
*/
private $offerCarousels;
/**
* @ORM\ManyToOne(targetEntity="Honda\MainBundle\Entity\News", inversedBy="newsBlocks", cascade={"persist"})
*/
private $news;
/**
* @ORM\OneToMany(targetEntity="Honda\MainBundle\Entity\News\PhotoSlider", mappedBy="newsPhotoSliderBlock", cascade={"persist"})
*/
private $photoSliders;
/**
* @ORM\Column(name="position", type="integer")
*/
private $position;
/**
* Get id.
*
* @return int
*/
public function getId()
{
return $this->id;
}
/**
* Constructor
*/
public function __construct()
{
$this->offers = new \Doctrine\Common\Collections\ArrayCollection();
$this->videos = new \Doctrine\Common\Collections\ArrayCollection();
$this->legalNotices = new \Doctrine\Common\Collections\ArrayCollection();
$this->offerCarousels = new \Doctrine\Common\Collections\ArrayCollection();
$this->photoSliders = new \Doctrine\Common\Collections\ArrayCollection();
}
/**
* Add offer.
*
* @param \Honda\MainBundle\Entity\News\Offer $offer
*
* @return NewsBlocks
*/
public function addOffer(\Honda\MainBundle\Entity\News\Offer $offer)
{
if (!$this->offers->contains($offer)) {
$this->offers[] = $offer;
$offer->setNewsBlockOffer($this);
}
return $this;
}
/**
* Remove offer.
*
* @param \Honda\MainBundle\Entity\News\Offer $offer
*
* @return boolean TRUE if this collection contained the specified element, FALSE otherwise.
*/
public function removeOffer(\Honda\MainBundle\Entity\News\Offer $offer)
{
if (!$this->offers->contains($offer)) {
return;
}
$this->offers->removeElement($offer);
$offer->setNewsBlockOffers(null);
return $this;
}
/**
* Get offers.
*
* @return \Doctrine\Common\Collections\Collection
*/
public function getOffers()
{
return $this->offers;
}
/**
* Add video.
*
* @param \Honda\MainBundle\Entity\News\Video $video
*
* @return NewsBlocks
*/
public function addVideo(\Honda\MainBundle\Entity\News\Video $video)
{
if (!$this->videos->contains($video)) {
$this->videos[] = $video;
$video->setNewsBlockVideo($this);
}
return $this;
}
/**
* Remove video.
*
* @param \Honda\MainBundle\Entity\News\Video $video
*
* @return boolean TRUE if this collection contained the specified element, FALSE otherwise.
*/
public function removeVideo(\Honda\MainBundle\Entity\News\Video $video)
{
if (!$this->videos->contains($video)) {
return;
}
$this->videos->removeElement($video);
$video->setNewsBlockVideo(null);
return $this;
}
/**
* Get videos.
*
* @return \Doctrine\Common\Collections\Collection
*/
public function getVideos()
{
return $this->videos;
}
/**
* Set blockName.
*
* @param string $blockName
*
* @return NewsBlocks
*/
public function setBlockName($blockName)
{
$this->blockName = $blockName;
return $this;
}
/**
* Get blockName.
*
* @return string
*/
public function getBlockName()
{
return $this->blockName;
}
/**
* Add legalNotice.
*
* @param \Honda\MainBundle\Entity\News\LegalNotices $legalNotice
*
* @return NewsBlocks
*/
public function addLegalNotice(\Honda\MainBundle\Entity\News\LegalNotices $legalNotice)
{
if (!$this->legalNotices->contains($legalNotice)) {
$this->legalNotices[] = $legalNotice;
$legalNotice->setNewsBlockLegalNotices($this);
}
return $this;
}
/**
* Remove legalNotice.
*
* @param \Honda\MainBundle\Entity\News\LegalNotices $legalNotice
*
* @return boolean TRUE if this collection contained the specified element, FALSE otherwise.
*/
public function removeLegalNotice(\Honda\MainBundle\Entity\News\LegalNotices $legalNotice)
{
if (!$this->legalNotices->contains($legalNotice)) {
return;
}
$this->legalNotices->removeElement($legalNotice);
$legalNotice->setUniqueLook(null);
return $this;
}
/**
* Get legalNotices.
*
* @return \Doctrine\Common\Collections\Collection
*/
public function getLegalNotices()
{
return $this->legalNotices;
}
/**
* Add offerCarousel.
*
* @param \Honda\MainBundle\Entity\News\OfferCarousel $offerCarousel
*
* @return NewsBlocks
*/
public function addOfferCarousel(\Honda\MainBundle\Entity\News\OfferCarousel $offerCarousel)
{
if (!$this->offerCarousels->contains($offerCarousel)) {
$this->offerCarousels[] = $offerCarousel;
$offerCarousel->setNewsOfferBlocks($this);
}
return $this;
}
/**
* Remove offerCarousel.
*
* @param \Honda\MainBundle\Entity\News\OfferCarousel $offerCarousel
*
* @return boolean TRUE if this collection contained the specified element, FALSE otherwise.
*/
public function removeOfferCarousel(\Honda\MainBundle\Entity\News\OfferCarousel $offerCarousel)
{
if (!$this->offerCarousels->contains($offerCarousel)) {
return;
}
$this->offerCarousels->removeElement($offerCarousel);
$offerCarousel->setNewsOfferBlocks(null);
return $this;
}
/**
* Get offerCarousels.
*
* @return \Doctrine\Common\Collections\Collection
*/
public function getOfferCarousels()
{
return $this->offerCarousels;
}
/**
* Set news.
*
* @param \Honda\MainBundle\Entity\News|null $news
*
* @return NewsBlocks
*/
public function setNews(\Honda\MainBundle\Entity\News $news = null)
{
$this->news = $news;
return $this;
}
/**
* Get news.
*
* @return \Honda\MainBundle\Entity\News|null
*/
public function getNews()
{
return $this->news;
}
/**
* Add photoSlider.
*
* @param \Honda\MainBundle\Entity\News\PhotoSlider $photoSlider
*
* @return NewsBlocks
*/
public function addPhotoSlider(\Honda\MainBundle\Entity\News\PhotoSlider $photoSlider)
{
if (!$this->photoSliders->contains($photoSlider)) {
$this->photoSliders[] = $photoSlider;
$photoSlider->setNewsPhotoSliderBlock($this);
}
return $this;
}
/**
* Remove photoSlider.
*
* @param \Honda\MainBundle\Entity\News\PhotoSlider $photoSlider
*
* @return boolean TRUE if this collection contained the specified element, FALSE otherwise.
*/
public function removePhotoSlider(\Honda\MainBundle\Entity\News\PhotoSlider $photoSlider)
{
if (!$this->photoSliders->contains($photoSlider)) {
return;
}
$this->photoSliders->removeElement($photoSlider);
$photoSlider->setNewsPhotoSliderBlock(null);
}
/**
* Get slides.
*
* @return \Doctrine\Common\Collections\Collection
*/
public function getPhotoSliders()
{
return $this->photoSliders;
}
/**
* Set position.
*
* @param int $position
*
* @return NewsBlocks
*/
public function setPosition($position)
{
$this->position = $position;
return $this;
}
/**
* Get position.
*
* @return int
*/
public function getPosition()
{
return $this->position;
}
}
法律声明
<?php
namespace Honda\MainBundle\Entity\News;
use Doctrine\ORM\Mapping as ORM;
use Honda\MainBundle\Entity\Traits;
/**
* LegalNotices
*
* @ORM\Table(name="news_legal_notices")
* @ORM\Entity(repositoryClass="Honda\MainBundle\Repository\News\LegalNoticesRepository")
*/
class LegalNotices
{
use Traits\DistributorTrait,
Traits\ActivationTrait;
/**
* @var int
*
* @ORM\Column(name="id", type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @var string
*
* @ORM\Column(name="description", type="text")
*/
private $description;
/**
* @ORM\ManyToOne(targetEntity="Honda\MainBundle\Entity\NewsBlocks", inversedBy="legalNotices", cascade={"persist"})
*/
private $newsBlockLegalNotices;
/**
* Get id.
*
* @return int
*/
public function getId()
{
return $this->id;
}
/**
* Set description.
*
* @param string $description
*
* @return LegalNotices
*/
public function setDescription($description)
{
$this->description = $description;
return $this;
}
/**
* Get description.
*
* @return string
*/
public function getDescription()
{
return $this->description;
}
/**
* Set newsBlockLegalNotices.
*
* @param \Honda\MainBundle\Entity\NewsBlocks|null $newsBlockLegalNotices
*
* @return LegalNotices
*/
public function setNewsBlockLegalNotices(\Honda\MainBundle\Entity\NewsBlocks $newsBlockLegalNotices = null)
{
$this->newsBlockLegalNotices = $newsBlockLegalNotices;
return $this;
}
/**
* Get newsBlockLegalNotices.
*
* @return \Honda\MainBundle\Entity\NewsBlocks|null
*/
public function getNewsBlockLegalNotices()
{
return $this->newsBlockLegalNotices;
}
}
这是我在控制器中的函数：
/**
* @Route("/actualites/{slug}", name="news_show_article", requirements={"slug": "[a-zA-Z0-9\-]+"})
*/
public function articleAction(Request $request, $slug)
{
$em = $this->getDoctrine()->getManager();
$news = $em->getRepository(News::class)->findBy(['slug' => $slug]); // Return specific row but collection emtpy
$news = $em->getRepository(News::class)->findOneBy(['slug' => $slug]); // Return specific row but collection emtpy
$news = $em->getRepository(News::class)->findBy([], ['createdAt' => 'DESC']); // Return all but collection empty
$r = $news[16]->getNewsBlocks();
foreach ($r as $item) {
dump($item);
}
$news = $em->getRepository(News::class)->findAll(); // Return all and collection is not emtpy
$r = $news[16]->getNewsBlocks();
foreach ($r as $item) {
foreach($item->getOffers() as $offer) {
dump($offer);
}
}
}