规则不会更新简单的数组类型字段

Question

短篇故事(编辑)

可以存储数组而不是映射关联。在Symfony2中，使用collection Field Type很容易做到这一点。例如，使用此技术，您可以存储填充数组事件字段的文本字段数组。然而，要更新数组，有一个技巧，@Vadim Ashikhman在公认的答案中很好地解释了这个技巧。

长篇大论

有时，存储数组比存储映射关联更有用，效率更高。但是，一旦创建，如果该数组的大小不变，更新该数组仍然很复杂。

很多人都有similar issue，但是没有人找到解决这个问题的合适方法。

​

​

一个团队可以组织许多活动。这些事件只是使用Doctrine存储在数组中，而不是使用OneToMany关联。因此，实体事件不会与Doctrine映射。

实体事件(未与Doctrine映射)

<?php

namespace Acme\TestBundle\Entity;

...

class Event
{

    /**
     * @Assert\NotBlank
     */
    private $name;

    public function setName($name)
    {
        $this->name = $name;
    }

    public function getName()
    {
        return $this->name;
    }


}

实体团队

<?php

namespace Acme\TestBundle\Entity;

...

/**
 * @ORM\Entity()
 * @ORM\HasLifecycleCallbacks
 * @ORM\Table(name="teams")  
 */
class Team 
{

/**
     * @ORM\Column(type="array")
     * @var array
     */
    protected $events;


    public function addEvent($event)
    {
        if (!in_array($event, $this->events, true)) {
            $this->events[] = $event;
        }

        return $this;
    }

    public function removeEvent($event)
    {
        if (false !== $key = array_search($event, $this->events, true)) {
            unset($this->events[$key]);
            $this->events = array_values($this->events);
        }

        return $this;
    }

    public function getEvents()
    {
        return $this->events;
    }

    public function setEvents(array $events)
    {
        $this->events = array();

        foreach ($events as $event) {
            $this->addEvent($event);
        }

        return $this;
    }

事件表单

<?php
namespace Acme\TestBundle\Form\Type;

...

class EventType extends AbstractType
{

    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        parent::buildForm($builder, $options);

        $builder->add('name', 'text');
    }

    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        $resolver->setDefaults(array(
            'data_class' => 'Acme\TestBundle\Entity\Event',
            'cascade_validation' => true,
        ));
    }

    ...
}

团队形式

<?php

namespace Acme\TestBundle\Form\Type;

...

class TeamType extends AbstractType
{

    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        parent::buildForm($builder, $options);

        $builder->add('events','collection', array(
            'type' => new EventType(),
            'allow_add'   => true,
            'allow_delete' => true,
            'prototype' => true,
            'by_reference' => false,
            'options' => array('data_class' => 'Acme\TestBundle\Entity\Event'),
            )
        );

    }

    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        $resolver->setDefaults(array(
            'data_class' => 'Acme\TestBundle\Entity\Team',
        ));
    }
    ...

}

控制器

/**
 * Update a team
 *
 * @Route("update/{team_id}", name="updateTeamFromId")
 * @Template("AcmeTestBundle:Team:teamUpdate.html.twig")
 */
public function updateTeamAction($team_id, Request $request)
{

    $em = $this->getDoctrine()->getManager();

    $repository= $em->getRepository('AcmeTestBundle:Team');

    $team_to_update = $repository->find($team_id);

    $form = $this->createForm(new teamType(), $team_to_update);

    if ($request->getMethod() == 'POST')
    {
        $form->bind($request);

        if ($form->isValid()){

            $em->persist($team_to_update);
            $em->flush();

            return $this->redirect($this->generateUrl('homepage'))  ;
        }
    }

    return array(
    'form' => $form->createView(),
    'team_id' => $team_id,
    );

}

Answer 1

您可以在控制器中尝试以下操作：

public function updateTeamAction($team_id, Request $request)
{

    $em = $this->getDoctrine()->getManager();

    $repository= $em->getRepository('AcmeTestBundle:Team');

    $team_to_update = $repository->find($team_id);

    $form = $this->createForm(new teamType(), $team_to_update);

    if ($request->getMethod() == 'POST')
    {
        $form->bind($request);

        if ($form->isValid()){
            $events = $team_to_update->getEvents();
            foreach($events as $key => $value){
                $team_to_update->removeEvent($key);
            }
            $em->flush();
            $team_to_update->setEvents($events);
            $em->persist($team_to_update);
            $em->flush();

            return $this->redirect($this->generateUrl('homepage'))  ;
        }
    }

    return array(
    'form' => $form->createView(),
    'team_id' => $team_id,
    );

}

可能有一个更好的方法来做这件事，我知道这不是一个很好的方法，但在你(或其他人)找到解决方案之前，你可以把它作为一个临时解决方案。