php - Symfony 3 - 来自数据库的动态表单字段

Question

我在数据库中有一个包含字段的表:- 字段标签、字段类型、字段大小写等

我想通过 field_case 动态地向表单添加字段。

例如:在此表单类型中，我想添加来自数据库的所有字段，其中 field_case = 1

public function buildForm(FormBuilderInterface $builder, array $options)
{
    $builder->add("companie_uid", HiddenType::class);
    $builder->add("companie_denumire", TextType::class, array('label' => 'companie_denumire'));
    $builder->add("companie_cui", TextType::class, array('label' => 'companie_cui', 'required' => false));
    $builder->add("companie_j", TextType::class, array('label' => 'companie_j', 'required' => false));
    $builder->add("companie_mail", EmailType::class, array('label' => 'companie_mail', 'required' => false));
    $builder->add("companie_website", TextType::class, array('label' => 'companie_website', 'required' => false));
    $builder->add("companie_status", HiddenType::class);
    $builder->add("companie_descriere", TextAreaType::class, array('label' => 'companie_descriere', 'required' => false));
    $builder->add("companie_telefon", TextType::class, array('label' => 'companie_telefon', 'required' => false));
    $builder->add("companie_iban", TextType::class, array('label' => 'companie_iban', 'required' => false));
    $builder->add("companie_banca", TextType::class, array('label' => 'companie_banca', 'required' => false));
    $builder->add("file", FileType::class, array('label' => 'companie_file', 'mapped' => false, 'required' => false));
    $builder->add("save", SubmitType::class, array('label' => 'companie_save'));
    $builder->add(
        $builder->create('address', CompanyAddressType::class, Array('by_reference' => false,))
    );
}

我想从表 fields 添加，其中 field_case = 1

$builder->add(field_id, field_type, array('label' => 'field_label'));

并将它们保存到另一个表 field_values 的数据库中。

Answer 1

您可以使用 form listener

$builder->addEventListener(FormEvents::PRE_SET_DATA, function (FormEvent $event) {
    $data = $event->getData();
    
    switch($data->getFieldCase())
    {
        case 1:
        $builder->add(field_id, field_type, array('label' => 'field_label'));
        break;
        // ...
    }    
});