我正在使用 Symfony2 Forms 和 FOSRestBundle。
我正在尝试将具有多对多关系的实体保存在数据库中。
我创建了一个带有集合字段（http://symfony.com/doc/master/cookbook/form/form_collections.html）的表单，如下所示：
class MainType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->add('name');
$builder->add('description');
$builder->add('others', 'collection', array(
'type' => new OtherType()
));
}
public function getName()
{
return '';
}
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$resolver->setDefaults(array(
'data_class' => 'Acme\SearchBundle\Entity\Main',
'csrf_protection' => false
));
}
}
class OtherType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->add('id');
}
public function getName()
{
return '';
}
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$resolver->setDefaults(array(
'data_class' => 'Acme\SearchBundle\Entity\Other',
'csrf_protection' => false
));
}
}
“其他”类型的对象集合存储在数据库中。而且我不想存储更多该类型的对象，只读取并将它们与主对象相关联。
当我处理表单时，我使用此功能：
private function processForm(Main $main, $new = false)
{
$new = true;
$statusCode = $new ? 201 : 204;
$form = $this->createForm(new MainType(), $main);
$form->bind($this->getRequest());
if ($form->isValid()) {
$mainValidated = $form->getData();
// I should store the collection of objects of type other
// in the database
$em = $this->getDoctrine()->getEntityManager();
$em->persist($mainValidated);
$em->flush();
return $this->view($new ? $mainValidated : null, $statusCode);
}
return $this->view($form, 400);
}
我从客户端 Backbone.js 发送的代码 json 是：
{"others":[{"id":1}, {"id":2}]}
实体：
- 主要的
xml:
<entity name="Acme\SearchBundle\Entity\Main" table="main">
<id name="id type="integer" column="id">
<generator strategy="IDENTITY"/>
</id>
<field name="name" type="integer" column="name" nullable="true"/>
<field name="description" type="integer" column="description" nullable="true"/>
<many-to-many field="others" target-entity="Other" inversed-by="mains">
<cascade>
<cascade-persist/>
</cascade>
<join-table name="main_has_other">
<join-columns>
<join-column name="main" referenced-column-name="id"/>
</join-columns>
<inverse-join-columns>
<join-column name="other" referenced-column-name="id"/>
</inverse-join-columns>
</join-table>
</many-to-many>
</entity>
实体：
<?php
namespace Acme\SearchBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use JMS\Serializer\Annotation\Type;
use JMS\Serializer\Annotation\Groups;
use JMS\Serializer\Annotation\Expose;
class Main
{
/**
* @Type("integer")
* @Groups({"admin"})
*
* @var integer
*
*/
private $id;
/**
*
* @Type("string")
* @Groups({"manage"})
*
* @var string
*/
private $name;
/**
* @Type("string")
* @Groups({"manage"})
*
* @var string
*/
private $description;
/**
* @Type("ArrayCollection<Acme\SearchBundle\Entity\Other>")
* @Groups({"manage"})
*
* @var \Doctrine\Common\Collections\Collection
*/
private $others;
/**
* Constructor
*/
public function __construct()
{
$this->others = new \Doctrine\Common\Collections\ArrayCollection();
}
/**
* Set name
*
* @param string $name
* @return Main
*/
public function setName($name)
{
$this->name = $name;
return $this;
}
/**
* Get name
*
* @return string
*/
public function getName()
{
return $this->name;
}
/**
* Set description
*
* @param string $description
* @return Main
*/
public function setDescription($description)
{
$this->description = $description;
return $this;
}
/**
* Get description
*
* @return string
*/
public function getDescription()
{
return $this->description;
}
/**
* Get id
*
* @return integer
*/
public function getId()
{
return $this->id;
}
/**
* Add others
*
* @param \Acme\SearchBundle\Entity\Other $other
* @return Main
*/
public function addOthers(\Acme\SearchBundle\Entity\Other $other)
{
$this->others[] = $other;
return $this;
}
/**
* Remove others
*
* @param \Acme\SearchBundle\Entity\Other $other
*/
public function removeOthers(\Acme\SearchBundle\Entity\Other $other)
{
$this->others->removeElement($other);
}
/**
* Get others
*
* @return \Doctrine\Common\Collections\Collection
*/
public function getOthers()
{
return $this->others;
}
}
- 其他
xml:
<entity name="Acme\SearchBundle\Entity\Other" table="other">
<id name="id" type="integer" column="id">
<generator strategy="IDENTITY"/>
</id>
<field name="name" type="string" column="name" length="255" nullable="true"/>
<field name="description" type="string" column="name" length="255" nullable="true"/>
<many-to-many field="mains" target-entity="Main" mapped-by="others">
<cascade>
<cascade-persist/>
</cascade>
</many-to-many>
</entity>
实体：
<?php
namespace Acme\SearchBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use JMS\Serializer\Annotation\Type;
use JMS\Serializer\Annotation\Groups;
class Other
{
/**
* @Type("integer")
* @Groups({"manage"})
*
* @var integer
*/
private $id;
/**
* @Type("string")
* @Groups({"manage"})
*
* @var string
*/
private $name;
/**
* @Type("string")
* @Groups({"manage"})
*
* @var string
*/
private $description;
/**
* @Type("Acme\SearchBundle\Entity\Main")
* @Groups({"admin"})
*
* @var \Doctrine\Common\Collections\Collection
*/
private $mains;
/**
* Constructor
*/
public function __construct()
{
$this->mains = new \Doctrine\Common\Collections\ArrayCollection();
}
/**
* Set name
*
* @param string $name
* @return Other
*/
public function setName($name)
{
$this->name = $name
}
/**
* Get name
*
* @return string
*/
public function getName()
{
return $this->name;
}
/**
* Set description
*
* @param string $description
* @return Other
*/
public function setDescription($description)
{
$this->description = $description;
return $this;
}
/**
* Get description
*
* @return string
*/
public function getDescription()
{
return $this->description;
}
/**
* Get id
*
* @return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set id
*
* @param integer $id
* @return Other
*/
public function setId($id)
{
$this->id = $id;
return $this;
}
/**
* Add main
*
* @param \Acme\SearchBundle\Entity\Main $main
* @return Other
*/
public function addMains(\Acme\SearchBundle\Entity\Main $main)
{
$this->mains[] = $main;
return $this;
}
/**
* Remove main
*
* @param \Acme\SearchBundle\Entity\Main $main
*/
public function removeMains(\AcmeSearchBundle\Entity\Main $main)
{
$this->mains->removeElement($main);
}
/**
* Get mains
*
* @return \Doctrine\Common\Collections\Collection
*/
public function getMains()
{
return $this->mains;
}
}
当我将“main”类型的对象持久保存在数据库中时，集合不会保存在多对多关系的表中。持久化“主要”对象时，我必须手动保存集合。
我正在寻找一种尽可能简单地自动保存对象集合的方法。