因此,1:M/M:1 关系不像 M:M 关系那样工作(很明显),但我认为通过适当的配置,您可以获得与 M:M 关系相同的输出。
基本上,我需要向 path_offer
添加另一个字段(位置)。
在我尝试使用 $path->getOffers()
之前,我认为它可以正常工作,它返回了一个 PersistentCollection
而不是我认为是强制的(一个 ArrayCollection
of Offers)。无论如何,在当前表中,我有两个条目:一条路径的两个报价。 $path->getOffers()
正在返回一个 PathOffer
的 PersistantCollection
,它只有一个 Offer
被附加,而没有两者。
我的问题是如何真正使用这些类型的关系?因为我正在处理的这个项目的许多其他方面都需要它(许多 M:M 集合也需要定位)
我的代码在下面!
路径.php
[..]
/**
* @ORM\Entity
* @ORM\Table(name="path")
*/
class Path
{
/**
* @var integer
*
* @ORM\Column(type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="IDENTITY")
*/
protected $id;
/**
* @ORM\OneToMany(targetEntity="PathOffer", mappedBy="offer", cascade={"all"})
*/
protected $offers;
[..]
PathOffer.php
[..]
/**
* @ORM\Entity
* @ORM\Table(name="path_offer")
*/
class PathOffer
{
/**
* @ORM\Column(type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="IDENTITY")
*/
protected $id;
/**
* @ORM\ManyToOne(targetEntity="Path", inversedBy="offers", cascade={"all"})
*/
protected $path;
/**
* @ORM\ManyToOne(targetEntity="Offer", inversedBy="offers", cascade={"all"})
*/
protected $offer;
/**
* @ORM\Column(type="integer")
*/
protected $pos;
[..]
优惠.php
[..]
/**
* @ORM\Entity
* @ORM\Table(name="offer")
*/
class Offer
{
/**
* @var integer
*
* @ORM\Column(type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="IDENTITY")
*/
protected $id;
/**
* @var \ZGoffers\MainBundle\Entity\PathOffer
*
* @ORM\OneToMany(targetEntity="PathOffer", mappedBy="path", cascade={"all"})
*/
protected $paths;
[..]
最佳答案
我想通了。希望这篇文章可以帮助其他和我一样沮丧的人!
路径.php
<?php
namespace JStout\MainBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
/**
* @ORM\Entity
* @ORM\Table(name="path")
*/
class Path
{
/**
* @var integer
*
* @ORM\Column(type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="IDENTITY")
*/
private $id;
/**
* @var \JStout\MainBundle\Entity\PathOffer
*
* @ORM\OneToMany(targetEntity="PathOffer", mappedBy="path", cascade={"all"})
* @ORM\OrderBy({"pos" = "ASC"})
*/
private $offers;
[...]
PathOffer.php
<?php
namespace JStout\MainBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
/**
* @ORM\Entity
* @ORM\Table(name="path_offer")
*/
class PathOffer
{
/**
* @ORM\Column(type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="IDENTITY")
*/
private $id;
/**
* @ORM\ManyToOne(targetEntity="Path", inversedBy="offers", cascade={"all"})
*/
private $path;
/**
* @ORM\ManyToOne(targetEntity="Offer", inversedBy="paths", cascade={"all"})
*/
private $offer;
/**
* @ORM\Column(type="integer")
*/
private $pos;
[...]
优惠.php
<?php
namespace JStout\MainBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
/**
* @ORM\Entity
* @ORM\Table(name="offer")
*/
class Offer
{
/**
* @var integer
*
* @ORM\Column(type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="IDENTITY")
*/
private $id;
/**
* @var \JStout\MainBundle\Entity\PathOffer
*
* @ORM\OneToMany(targetEntity="PathOffer", mappedBy="offer", cascade={"all"})
*/
private $paths;
[...]
对于我的前端逻辑:
路径 Controller .php
<?php
[...]
/**
* @Extra\Route("/path", name="admin_path")
* @Extra\Route("/path/{id}/edit", name="admin_path_edit", requirements={"id" = "\d+"})
* @Extra\Template()
*/
public function pathAction($id = null)
{
$path = $this->_getObject('Path', $id); // this function either generates a new entity or grabs one from database depending on $id
$form = $this->get('form.factory')->create(new Form\PathType(), $path);
$formHandler = $this->get('form.handler')->create(new Form\PathHandler(), $form);
// process form
if ($formHandler->process()) {
$this->get('session')->setFlash('notice', 'Successfully ' . ($this->_isEdit($path) ? 'edited' : 'added') . ' path!');
return $this->redirect($this->generateUrl('admin_path'));
}
return array(
'path' => $path,
'form' => $form->createView(),
'postUrl' => !$this->_isEdit($path) ? $this->generateUrl('admin_path') : $this->generateUrl('admin_path_edit', array('id' => $path->getId())),
'paths' => $this->_paginate('Path'),
'edit' => $this->_isEdit($path) ? true : false
);
}
[...]
PathType.php(路径形式)
<?php
namespace JStout\MainBundle\Form;
use Symfony\Component\Form\AbstractType,
Symfony\Component\Form\FormBuilder;
class PathType extends AbstractType
{
public function buildForm(FormBuilder $builder, array $options)
{
$builder
->add('name')
->add('title')
->add('offers', 'collection', array(
'type' => new PathOfferType(),
'allow_add' => true,
'allow_delete' => true
))
->add('active');
}
public function getDefaultOptions(array $options)
{
return array(
'data_class' => 'JStout\MainBundle\Entity\Path'
);
}
}
PathOfferType.php(PathType 的优惠集合类型)
<?php
namespace JStout\MainBundle\Form;
use Symfony\Component\Form\AbstractType,
Symfony\Component\Form\FormBuilder;
class PathOfferType extends AbstractType
{
public function buildForm(FormBuilder $builder, array $options)
{
$builder
->add('offer', 'entity', array(
'class' => 'JStout\MainBundle\Entity\Offer',
'query_builder' => function($repository) { return $repository->createQueryBuilder('o')->orderBy('o.name', 'ASC'); },
'property' => 'name'
))
->add('pos', 'integer');
}
public function getDefaultOptions(array $options)
{
return array(
'data_class' => 'JStout\MainBundle\Entity\PathOffer'
);
}
}
PathHandler.php(我是如何处理表单的)
<?php
namespace JStout\MainBundle\Form;
use JStout\MainBundle\Component\Form\FormHandlerInterface,
Symfony\Component\Form\Form,
Symfony\Component\HttpFoundation\Request,
Doctrine\ORM\EntityManager,
JStout\MainBundle\Entity\Path;
class PathHandler implements FormHandlerInterface
{
protected $form;
protected $request;
protected $entityManager;
public function buildFormHandler(Form $form, Request $request, EntityManager $entityManager)
{
$this->form = $form;
$this->request = $request;
$this->entityManager = $entityManager;
}
public function process()
{
if ('POST' == $this->request->getMethod()) {
// bind form data
$this->form->bindRequest($this->request);
// If form is valid
if ($this->form->isValid() && ($path = $this->form->getData()) instanceOf Path) {
// save offer to the database
$this->entityManager->persist($path);
foreach ($path->getOffers() as $offer) {
$offer->setPath($path);
$this->entityManager->persist($offer);
}
$this->entityManager->flush();
return true;
}
}
return false;
}
}
关于php - Doctrine2 一对多/多对一关系,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/6514365/