相关疑难解决方法(0)

我正在尝试创建一个包含嵌套集合的表单.我不知道如何处理JS部分来显示子集合.有谁知道我该怎么办？

这是我的表格的代码:

class ParentFormType extends AbstractType 
{

    public function buildForm(FormBuilderInterface $builder, array $options) 
    {   
        $builder
              ->add('case', 'choice', array(
                        'choices'   => array(
                            'case1'   =>  'case1',
                            'case2'   =>  'case2',
                            'case3'   =>  'case3',
                )))
            ->add ('subForm1', 'collection', array (
             'type' => new Sub1FormType(),
             'allow_add' => true,
             'allow_delete' => true,
             'by_reference' => false,
             'prototype' => true,
            ))

    ;

        $builder->add('save',"submit") ;
    }


    public function setDefaultOptions(OptionsResolverInterface $resolver) {
    }

    public function getName() {
        return 'formtestparenttype';
    }
}

class Sub1FormType extends AbstractType 
{

    public function buildForm(FormBuilderInterface $builder, …