CollectionType嵌入式表单更新所有实体，而不是更新单个实体

Question

我有一个298 216 212 205 205 1286 206 206 208 251 204 206 206 208 208 208 206 206 230 204 206 208 208 208 210 206 202 208 206 204 256 208 206 208 203 206 206 206 206 206 208 209 209 256 202 204 206 210 252 208 216 206 204 206 252 232 218 208 210 206 206 206 212 206 206 206 206 242 207 209 246 206 206 208 210 208 204 208 206 204 204 204 206 210 206 208 208 232 230 208 204 210 1287 204 238 207 207 211 205 282 202 206 212 208 206 206 204 206 206 210 232 209 205 207 207 211 205 207 209 205 205 211 250 206 208 210 278 242 206 208 204 206 208 204 208 210 206 206 206 206 206 208 204 210 206 206 208 242 206 208 206 208 208 210 210 210 202 232 205 207 209 207 211 209 207 209 212 206 232 208 210 244 204 208 255 208 204 210 206 206 206 1383 209 209 205 209 205 246 206 210 208 208 206 206 204 204 208 246 206 206 204 234 207 244 206 206 208 206 208 206 206 206 206 212 204 208 208 202 208 208 208 208 206 208 250 208 214 206 206 206 206 208 203 279 230 206 206 210 242 209 209 205 211 213 207 207 209 207 207 211 205 203 207 209 209 207 表单，其中包含许多映射到data_class CollectionType的许多EditAnnouncementType的集合。 Announcement.php EditAnnouncementType I have one Announces for each existing EditAnnouncementType`表单。

我的问题是，更改单个公告后，执行代码. The user can open up a window to edit a single announcement, which displays the后，其他公告文本将被编辑的公告的旧文本覆盖。但是，没有其他已编辑的特征有此问题，只有文本。

collectionType

$editForm->handleRequest($request);

EditAnnouncementType

class AnnouncementEditCollectionType extends AbstractType
{
    /**
     * @param FormBuilderInterface $builder
     * @param array                $options
     */
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->add('announcements', CollectionType::class,
            [
                'entry_type' => EditAnnouncementType::class,
                'entry_options' => ['label' => false],
                'label_attr' =>
                    [
                        'class' => 'sr-only'
                    ]
            ]);
    }

    /**
     * @param OptionsResolver $resolver
     */
    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults([
            'data_class' => AnnouncementManager::class
        ]);
    }
}

控制器

class EditAnnouncementType extends AbstractType
{
    /**
     * @param FormBuilderInterface $builder
     * @param array                $options
     */
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('save', SubmitType::class,
                [
                    'label' => 'Save changes',
                    'attr' => ['class' => 'btn btn-primary submit-edit announcementEditButton']
                ])

            ->add('content', TextareaType::class,
                [
                'attr' =>
                    [
                        'class' => 'form-control announcement-text',
                            'rows' => '5',
                            'name' => 'content',
                            'maxlength' => '2000'
                    ],
                    'required' => true
                ])

            ->add('category', ChoiceType::class,
                [
                    'choices' =>
                        [
                            'info_type' => 1,
                            'star_type' => 2,
                            'alert_type' => 3,
                            'lightbulb_type' => 4,
                            'event_type' => 5,
                            'statement_type' => 6,
                            'cat_type' => 7,
                            'hands_type' => 8
                        ],
                    'expanded' => true,
                    'multiple' => false,
                    'required' => true,
                    'label_attr' =>
                        [
                            'class' => 'sr-only'
                        ]
                ])
// can probably ignore this part
            ->add('id', HiddenType::class)
            ->add('deleted', HiddenType::class, ['data' => false])
            ->add('displayed', HiddenType::class)
            ->add('employees', HiddenType::class)
            ->add('students', HiddenType::class)

            ->add('audience', ChoiceType::class,
                [
                  'choices' =>
                      [
                          'Students: anybody with a student level field populated' => 'students',
                          'Employees: anybody with an employee ID number' => 'employees'
                      ],
                  'expanded' => true,
                  'required' => true,
                  'multiple' => true
                ]);
    }

    /**
     * @param OptionsResolver $resolver
     */
    public function configureOptions (OptionsResolver $resolver)
    {
        $resolver->setDefaults([
            'data_class' => Announcement::class
        ]);
    }
}