php - 如何使用 "sonata_type_model"或 symfony "entity"渲染带有选项组的多项选择下拉列表？

Question

我正在尝试呈现类似于 the SO question 的多项选择下拉列表使用 sonata_type_model 或 entity 类型。我有实体 Property 与 manyToMany 到 Feature ，即 FeatureType 的 oneToMany 。多选下拉列表正在属性创建表单中实现。

我找到了the group_by option 。但我使用 entity 收到警告，并使用 sonata_type_model 得到错误的渲染。

尝试 1

->add('features', 'entity', array(
    'class' => 'MyBundle:Feature',
    'multiple' => true,
    'group_by' => 'featureType'
))

Warning: Illegal offset type in isset or empty in vendor/symfony/symfony/src/Symfony/Component/Form/ChoiceList/Factory/DefaultChoiceListFactory.php at line 334

尝试 2

->add('features', 'sonata_type_model', array(
    'multiple' => true,
    'btn_add' => null,
    'group_by' => 'featureType'
))

它仅呈现下拉列表中的值，例如

尝试 3

我尝试了选择，但出现了错误

->add('features', 'sonata_type_model', array(
    'multiple' => true,
    'required' => false,
    'btn_add' => null,
    'choices' => $this->getFeatureOptionsWithGroup()
))

Warning: get_class() expects parameter 1 to be object, array given in vendor/doctrine/common/lib/Doctrine/Common/Util/ClassUtils.php at line 58

尝试 4

我尝试了 choice_list 但出现错误

->add('features', 'sonata_type_model', array(
    'multiple' => true,
    'required' => false,
    'btn_add' => null,
    'choice_list' => $this->getFeatureOptionsWithGroup()
))

The option "choice_list" with value array is expected to be of type "null" or "Symfony\Component\Form\ChoiceList\ChoiceListInterface", but is of type "array" in vendor/symfony/symfony/src/Symfony/Component/OptionsResolver/OptionsResolver.php at line 888

方法getFeatureOptionsWithGroup()返回这样的数组

array(
    'Group 1' => array(
        1 => 'Feature 1'
        2 => 'Feature 2'
    ),
    'Group 2' => array(
        3 => 'Feature 3'
        4 => 'Feature 4'
    )
)

尝试 5

我使用 ModelChoiceList 更新了方法，但遇到了与使用 choices 相同的错误。

Warning: get_class() expects parameter 1 to be object, array given in vendor/doctrine/common/lib/Doctrine/Common/Util/ClassUtils.php at line 58

private function getFeatureOptionsWithGroup()
{
    return new ModelChoiceList(
        $this->modelManager,
        'MyBundle:Feature',
        null,
        null,
        $this->getRepository('MyBundle:Feature')->getFeatureOptionsWithGroup()
    );
}

我希望我有机会在不覆盖模板的情况下渲染它。任何帮助将不胜感激。

Answer 1

使用类型实体

->add('features', 'entity', [
       'class'     => 'MyBundle:Feature',
       'property'  => 'name',
       'choices'   => $this->getFeatureOptionsWithGroup(),
       'multiple'  => true,
       'required'  => false,
       'btn_add'   => null,
])

确保您的函数 getFeatureOptionsWithGroup() 像这样返回

array(
       'Group 1' => array(
           1 => 'Feature Entity Object 1',
           2 => 'Feature Entity Object 2',
       ),
       'Group 2' => array(
           3 => 'Feature Entity Object 3',
           4 => 'Feature Entity Object 4',
       )
   )