Symfony2多个嵌入表单一对多更新外键

Question

你好，我的多嵌入表单（一对多）有问题。一个游戏有很多奖品，一个奖品有很多选择。当我试图保存此表单时，会收到错误消息

SQLSTATE[23000]：完整性约束冲突：1048列"fk_prize"不能为空

我已经在我的实体中设置了级联，并在我的表单中设置了类型by_redifference false，但没有起作用。所有其他指定的外键都能很好地工作。

更新：在控制器中，当我完成此表单时，保存成功。但我想用教义来做这件事。这是教条中的错误还是我的代码中的错误？谢谢你抽出时间！

            //Hacked code in controller to save the form
            $prizes = $data->getPrizes();
            foreach ($prizes as $prize) {
                $prizeOptions = $prize->getPrizesOptions();
                foreach ($prizeOptions as $prizeOption) {
                    $prizeOption->setPrize($prize);
                }
            }
            $em->persist($data);
            $em->flush();


<?php 
    class Game
    {
        /**
         * @ORMOneToMany(targetEntity="Prize", mappedBy="game", cascade={"persist"})
         */
        protected $prizes;
        public function __construct()
        {
            $this->gameUsers = new ArrayCollection();
            $this->prizes = new ArrayCollection();
        }

    }
    ?>      
<?php           
        class GameType extends AbstractType
        {
            /**
             * @param FormBuilderInterface $builder
             * @param array $options
             */
            public function buildForm(FormBuilderInterface $builder, array $options)
            {

                $builder
                    ->add('alias', 'text' , [
                        'label'=>'Name'
                    ])               
                    ->add('prizes' ,'collection', array(
                        'type'         => new PrizeType($this->intention),
                        'allow_add'    => true,
                        'allow_delete' => false,
                        'prototype' => true,
                        'by_reference' => false,
                        'label' => false,
                    ))                
                    ->add('save', 'submit', [
                        'attr'   =>  [
                            'class'   => 'btn btn-primary'
                        ]
                    ]);
            }                
        }
    <?php
    class Prize 
    {
    /**
     * The Game
     * @ORMManyToOne(targetEntity="Game")
     * @ORMJoinColumn(name="game_id", referencedColumnName="id")
     */
    protected $game;
    /**
     * @ORMOneToMany(targetEntity="PrizeOptions", mappedBy="prize", cascade={"persist"})
     */
    protected $prizes_options;
    /**
     * Constructor
     */
    public function __construct()
    {
        $this->prizes_options = new DoctrineCommonCollectionsArrayCollection();
    }
    }
    class PrizeType extends AbstractType
    {
        /**
         * @param FormBuilderInterface $builder
         * @param array $options
         */
        public function buildForm(FormBuilderInterface $builder, array $options)
        {
            $builder            
                ->add('prizes_options' ,'collection', array(
                    'type' => new PrizeOptionsType(),
                    'allow_add'    => true,
                    'allow_delete' => true,
                    'by_reference' => false,
                    'label' => false,
                ))    
            ;
        }

    }
    <?php
    class PrizeOptionsType extends AbstractType
    {
        public function buildForm(FormBuilderInterface $builder, array $options)
        {
            $builder
                ->add('name', 'text' , [
                    'label'=>'Value'
                ])
                ;
        }
    }

Answer 1

条令只能在"拥有"一方处理实体中的更改。也就是说，您只能在定义了联接列/联接表的实体中修改关系。http://doctrine-orm.readthedocs.org/en/latest/reference/unitofwork-associations.html