Symfony根据下拉列表中选择的值验证另一个下拉列表

时间:2014-11-18 15:58:14

标签: validation symfony symfony-forms symfony-2.3

我有3个未映射到FormType的下拉列表我正在绘制这些表单元素。

ContentType - 地区 - 语言

ContentType可以采用2个值 - 标准或区域。当我选择标准时,我不希望验证区域下拉列表。但是在选择Regional ContentType时应该验证它。区域和语言是动态填充的。

我无法遵循条件验证,我不认为这是我的方案的解决方案。

$brandId = $options['brandId'];
$builder
        ->add('contentType', 'choice', array(
            'mapped' => false,
            'empty_value' => 'Select Content Type',
            'choices' => array(
                'standard' => 'Standard',
                'regional' => 'Regional'
            ),
            'required' => true,
            'multiple' => false,
            'expanded' => false
        ))
        ->add('language', 'entity', array(
            'required' => false,
            'mapped' => false,
            'empty_value' => 'Select Language',
            'multiple' => false,
            'class' => 'Bundle:Language',
            'property' => 'title',
            'query_builder' => function(EntityRepository $er) use($brandId) {
                return $er->createQueryBuilder('l')
                    ->join('l.regions', 'lr')
                    ->join('lr.brands', 'lrb')
                    ->where('lrb.id = :currentBrandId')
                    ->setParameter('currentBrandId', $brandId);
            }
        ))
        ->add('regionSelection', 'entity', array(
            'required' => false,
            'mapped' => false,
            'empty_value' => 'Select Region',
            'empty_data' => null,
            'multiple' => false,
            'class' => 'Bundle:Region',
            'property' => 'title',
            'query_builder' => function(EntityRepository $er) use($brandId) {
                return $er->createQueryBuilder('r')
                    ->join('r.brands', 'rb')
                    ->where('rb.id = :currentBrandId')
                    ->setParameter('currentBrandId', $brandId);
            }
        ));

对此有任何帮助将不胜感激。

修改

所以我尝试使用回调向表单生成器添加约束:

->add('regionSelection', 'entity', array(
            'constraints' => array(
                new Assert\Callback(array(array($this, 'validateRegion')))
            ),
            'mapped' => false,
            'empty_value' => 'Select Region',
            'empty_data' => null,
            'multiple' => false,
            'class' => 'Bundle:Region',
            'property' => 'title',
            'query_builder' => function(EntityRepository $er) use($brandId) {
                return $er->createQueryBuilder('r')
                    ->join('r.brands', 'rb')
                    ->where('rb.id = :currentBrandId')
                    ->setParameter('currentBrandId', $brandId);
            }
        )); 

电话如下:

 public function validateRegion($value, ExecutionContextInterface $context)
{
//I am trying to check here if the contentType's selected value = 'regional' and no      //region is selected then the following code executes.
        $context->addViolationAt('regionSelection', 'There is already an event during this time!');

}

我现在的问题是因为我将$ this传递给回调函数,我找不到如何访问contentFormType字段。

1 个答案:

答案 0 :(得分:2)

如果提交了其他字段,您可以检查全局$ _POST变量(通过Request对象)......似乎:

public function validateRegion($value, ExecutionContextInterface $context)
{
     $request = Request::createFromGlobals();   
     $formData = $request->request->get("your_form_name");    
     if($formData["contentType"] == "regional"){
        ...
     }
}