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我有問題搞清楚如何創建三個實體我有嵌套形式邏輯：電影，演員和位置。我按照symfony文檔here中的說明從我的數據庫中生成了我的Symfony實體（+ orm.xml）。
我的最終目標將是有一個頁面，用戶可以執行下列操作：
- 創建從下拉菜單中選擇一個新的電影對象
- 選擇電影，和然後創建一個新的演員對象關聯到它
- 選擇從下拉菜單中選擇，然後創建一個ne w^位置對象關聯到它
（演員和位置都有一個1對多的加盟與Films表）
然而，我一直在掙扎在Symfony中嵌套表單的概念已經很長時間了，爲了「在我可以運行之前走路」，我只是試圖將以上每個單獨的路徑放在不同的路徑中：
/newfilm/newactor/newlocation
/New-film我可以得到的工作沒有問題。但是，對於另外兩個，我嘗試的任何東西似乎都不起作用。下面是我的代碼，如果有人能夠在Symfony中解釋嵌套表單的「理論」，以避免繼續擊中這個牆將非常讚賞......！
由於我的問題是兩個演員和位置相同，我只是將代碼爲演員（和電影），因爲我意識到這是相當多的已：
~~~ ~~控制器~~~~~
正是這個第二路線（/newactor），其具有嵌入/嵌套formType：
class DefaultController extends FOSRestController
{
/**
* @Route("/newfilm", name="new_film")
*/
public function newFilmAction(Request $request)
{
$film = new Films();
$form = $this->CreateFormBuilder($film)
->add('film_title','text',array('label'=>'Film title'))
->add('Save','submit',array('label'=>'Add new film'))
->getForm();
$form->handleRequest($request);
if ($form->isValid()) {
$em = $this->getDoctrine()->getManager();
$em->persist($film);
$em->flush();
return $this->redirectToRoute('success_addFilm');
}
return $this->render('AppBundle:Default:newfilm.form.html.twig', array(
'form' => $form->createView(),
));
}
/**
* @Route("/newactor", name="new_actor")
*/
public function newActorAction(Request $request)
{
$actor = new Actors();
$form = $this->createForm(new ActorType(), $actor);
$form->handleRequest($request);
if ($form->isValid()) {
$em = $this->getDoctrine()->getManager();
$em->persist($actor);
$em->flush();
return $this->redirectToRoute('success_addActor');
}
return $this->render('AppBundle:Default:newactor.form.html.twig', array(
'form' => $form->createView(),
));
}
}
~~~~~薄膜~~~~~
電影。PHP
/**
* Films
*/
class Films
{
/**
* @var integer
*/
private $filmid;
/**
* @var string
*/
private $film_title;
/**
* @var \AppBundle\Entity\Actors
*/
private $actor;
/**
* Get filmid
* @return integer
*/
public function getFilmid()
{
return $this->filmid;
}
/**
* Get film_title
*
* @return string
*/
public function getFilm_title()
{
return $this->film_title;
}
/**
* Set film_title
* @param string $film_title
* @return Films
*/
public function setFilm_title($film_title)
{
$this->film_title = $film_title;
return $this;
}
/**
* Set actor
*
* @param \AppBundle\Entity\Actors $actor
*
* @return Actors
*/
public function setActor(\AppBundle\Entity\Actors $actor = null)
{
$this->actor = $actor;
return $this;
}
/**
* Get actor
*
* @return \AppBundle\Entity\Actors
*/
public function getActor()
{
return $this->actor;
}
}
Films.orm.xml
<?xml version="1.0" encoding="utf-8"?>
<doctrine-mapping xmlns="http://doctrine-project.org/schemas/orm/doctrine-mapping" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://doctrine-project.org/schemas/orm/doctrine-mapping http://doctrine-project.org/schemas/orm/doctrine-mapping.xsd">
<entity name="AppBundle\Entity\Films" table="Films">
<indexes>
<index name="fk_Films_actors1_idx" columns="actor_id"/>
</indexes>
<id name="filmid" type="integer" column="filmid">
<generator strategy="IDENTITY"/>
</id>
<field name="film_title" type="text" column="film_title" length="65535" nullable="false">
<options>
<option name="fixed"/>
</options>
</field>
<many-to-one field="actor" target-entity="Actors" fetch="LAZY">
<join-columns>
<join-column name="actor_id" referenced-column-name="actorid"/>
</join-columns>
</many-to-one>
</entity>
</doctrine-mapping>
FilmType.php
class FilmType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('film_title');
}
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults(array(
'data_class'=>'AppBundle\Entity\Films'
));
}
public function getName()
{
return 'film';
}
}
~~~~~演員~~~~~
Actors.php
/**
* Entries
*/
class Entries
{
/**
* @var integer
*/
private $actorid;
/**
* @var string
*/
private $actorName;
/**
* Set actorid
*
* @param integer $actorid
*
* @return Actors
*/
public function setActorid($actorid)
{
$this->actorid = $actorid;
return $this;
}
/**
* Get actorid
*
* @return integer
*/
public function getActorid()
{
return $this->actorid;
}
/**
* Set actorName
*
* @param string $actorName
*
* @return Actors
*/
public function setActorName($actorName)
{
$this->actorName = $actorName;
return $this;
}
/**
* Get actorName
*
* @return string
*/
public function getActorName()
{
return $this->actorName;
}
}
Actors.orm.xml
<?xml version="1.0" encoding="utf-8"?>
<doctrine-mapping xmlns="http://doctrine-project.org/schemas/orm/doctrine-mapping" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://doctrine-project.org/schemas/orm/doctrine-mapping http://doctrine-project.org/schemas/orm/doctrine-mapping.xsd">
<entity name="AppBundle\Entity\Actors" table="Actors">
<id name="actorid" type="integer" column="actorid">
<generator strategy="IDENTITY"/>
</id>
<field name="actorName" type="text" column="actorName" length="65535" nullable="true">
<options>
<option name="fixed"/>
</options>
</field>
</entity>
</doctrine-mapping>
ActorType
class ActorType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('actorName')
->add('film','entity',array(
'class'=>'AppBundle:Films',
'query_builder'=>function(EntityRepository $er) {
return $er->createQueryBuilder('f')
->orderBy('f.film_title','ASC');
}
));
}
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults(array(
'data_class'=>'\AppBundle\Entity\Actors'
));
}
public function getName()
{
return 'actor';
}
}
我現在的錯誤消息是：
Catchable Fatal Error: Object of class AppBundle\Entity\Films could not be converted to string
500 Internal Server Error - ContextErrorException
我看過的答案是說在功能添加到我的Films.php：
public function __toString() {
return $this->name;
}
然而，當我這樣做，然後我得到的錯誤：
Error: Method AppBundle\Entity\Films::__toString() must not throw an exception
其他可能的想法，我」已經遇到在線（可惜沒有成功）是：
- 設置形式服務
- 數據轉換器
爲什麼選擇xml？ yaml更可讀 –
謝謝:)我一直在試圖使用'最佳實踐'，並閱讀這篇文章，其中建議使用XML，以便捆綁解耦以跨項目使用....否則我同意我會用註釋減少頭痛......！ http://blog.danielribeiro.org/yes-you-can-have-low-coupling-in-a-symfony-standard-edition-application/ – Bendy
@Bendy那篇文章已經過時了。如果你想'最佳實踐'，你應該使用註釋。 http://symfony.com/doc/current/best_practices/business-logic.html#doctrine-mapping-information –