php – Doctrine2 One-To-Many / Many-to-One关系

Path.php

<?php

namespace JStoutMainBundleEntity;

use DoctrineORMMapping as ORM;

/**
 * @ORMEntity
 * @ORMTable(name="path")
 */
class Path
{
    /**
     * @var integer
     *
     * @ORMColumn(type="integer")
     * @ORMId
     * @ORMGeneratedValue(strategy="IDENTITY")
     */
    private $id;

    /**
     * @var JStoutMainBundleEntityPathOffer
     *
     * @ORMOneToMany(targetEntity="PathOffer",cascade={"all"})
     * @ORMOrderBy({"pos" = "ASC"})
     */
    private $offers;

    [...]

PathOffer.php

<?php

namespace JStoutMainBundleEntity;

use DoctrineORMMapping as ORM;

/**
 * @ORMEntity
 * @ORMTable(name="path_offer")
 */
class PathOffer
{
    /**
     * @ORMColumn(type="integer")
     * @ORMId
     * @ORMGeneratedValue(strategy="IDENTITY")
     */
    private $id;

    /**
     * @ORMManyToOne(targetEntity="Path",cascade={"all"})
     */
    private $path;

    /**
     * @ORMManyToOne(targetEntity="Offer",inversedBy="paths",cascade={"all"})
     */
    private $offer;

    /**
     * @ORMColumn(type="integer")
     */
    private $pos;

    [...]

Offer.php

<?php

namespace JStoutMainBundleEntity;

use DoctrineORMMapping as ORM;

/**
 * @ORMEntity
 * @ORMTable(name="offer")
 */
class Offer
{
    /**
     * @var integer
     *
     * @ORMColumn(type="integer")
     * @ORMId
     * @ORMGeneratedValue(strategy="IDENTITY")
     */
    private $id;

    /**
     * @var JStoutMainBundleEntityPathOffer
     *
     * @ORMOneToMany(targetEntity="PathOffer",cascade={"all"})
     */
    private $paths;

    [...]

而对于我的前端逻辑：

PathController.php

<?php

    [...]

    /**
     * @ExtraRoute("/path",name="admin_path")
     * @ExtraRoute("/path/{id}/edit",name="admin_path_edit",requirements={"id" = "d+"})
     * @ExtraTemplate()
     */
    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 = $this->get('form.factory')->create(new FormPathType(),$path);
        $formHandler = $this->get('form.handler')->create(new FormPathHandler(),$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 JStoutMainBundleForm;

use SymfonyComponentFormAbstractType,SymfonyComponentFormFormBuilder;

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' => 'JStoutMainBundleEntityPath'
        );
    }
}

PathOfferType.php(PathType的提供集合类型)

<?php

namespace JStoutMainBundleForm;

use SymfonyComponentFormAbstractType,SymfonyComponentFormFormBuilder;

class PathOfferType extends AbstractType
{
    public function buildForm(FormBuilder $builder,array $options)
    {
        $builder
            ->add('offer','entity',array(
                'class' => 'JStoutMainBundleEntityOffer','query_builder' => function($repository) { return $repository->createQueryBuilder('o')->orderBy('o.name','ASC'); },'property' => 'name'
            )) 
            ->add('pos','integer');
    }

    public function getDefaultOptions(array $options)
    {
        return array(
            'data_class' => 'JStoutMainBundleEntityPathOffer'
        );
    }
}

PathHandler.php(我如何处理表单)

<?php

namespace JStoutMainBundleForm;

use JStoutMainBundleComponentFormFormHandlerInterface,SymfonyComponentFormForm,SymfonyComponentHttpFoundationRequest,DoctrineORMEntityManager,JStoutMainBundleEntityPath;

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;
    }
}