小编Fyf*_*fey的帖子

我有2个实体 - 用户和组.它们具有多对多关系,Group用于存储用户角色.

我正在尝试通过添加集合来创建用户编辑表单,我希望能够通过从下拉列表中选择它来添加新角色(仅限于数据库中已有的内容)

UserType.php:

class UserType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('username')
            ->add('email')
            ->add('forename')
            ->add('surname')
            ->add('isActive')
            ->add('joinDate', 'date', array('input' => 'datetime', 'format' => 'dd-MM-yyyy'))
            ->add('lastActive', 'date', array('input' => 'datetime', 'format' => 'dd-MM-yyyy'))
            ->add('groups', 'collection', array(
                    'type' => new GroupType(),
                    'allow_add' => true,
                    ))
        ;
    }

    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        $resolver->setDefaults(array(
            'data_class' => 'Sfox\CoreBundle\Entity\User'
        ));
    }
}

和GroupType.php:

class GroupType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('name')
            ->add('role'); …