Symfony 4-如何从Controller到FormType访问变量

Question

我的ListProductsController变量中有$ parentId。我想获取$ parentId值并在我的SearchProductType中使用它：

  public function buildForm(FormBuilderInterface $builder, array $options)
{
    $builder
        ->add('price',EntityType::class,[
            'class'=>Product::class,
            'choice_label'=>'price',
            'choice_value'=>'price',
            'placeholder'=>'Default',
            'query_builder' => function (EntityRepository $er){
                return $er->createQueryBuilder('product')
                    ->innerJoin('product.category','c')
                    ->addSelect('c')
                    ->innerJoin('product.manorwomen','m')
                    ->addSelect('m')
                    ->where('c.parent_id=1')

            },
            'expanded'=>false,
            'multiple'=>false
        ])
        ->add('submit',SubmitType::class)
    ;
}

c.parent_id必须等于控制器中的$ parentId

->where('c.parent_id=$parentId')

怎么做？

Answer 1

将其作为必需（强制性）选项传递到SearchProductType表单

/**      
 * {@inheritdoc}
 */
public function configureOptions(OptionsResolver $resolver)
{
    $resolver->setRequired([
        'parentId',
    ]);
}

然后在创建表单时将其传递 ListProductsController

$form = $this->createForm(SearchProductType::class, $objName,
  ['parentId' => $parentId], //or whatever the variable is called
);

最终使用它

public function buildForm(FormBuilderInterface $builder, array $options)
{
    $parentId = $options['parentId'];
    $builder->add('price',EntityType::class,[
        [...]
        'query_builder' => function (EntityRepository $er) use ($parentId) {
                [...]
                ->where('c.parent_id=' . $parentId)

        },
    ]);
}