Question

如何在symfony2 PostType类中添加验证约束“Field is required”？有什么建议？我是SF2的新手，我只是编辑以前开发人员所做的工作。

use Symfony\Component\Validator\Constraints\NotBlank;

class BlogPostType extends AbstractType
    {
        public function buildForm(FormBuilderInterface $builder, array $options)
        {

        $blogPostCategories = BlogPostCategoryQuery::create()
            ->filterByBlogPost($builder->getData())
            ->find();

        $categoryIds = array();
        foreach ($blogPostCategories as $blogPostCategory) {
            $categoryIds[] = $blogPostCategory->getCategory()->getId();
        }

        $queryOptions = array(
            'option_status' => Categorypeer::STATUS_ACTIVE,
            'option_category_ids' => $categoryIds
        );

        $categories = CategoryQuery::create()
            ->filterActiveCategoriesByOptions($queryOptions)
            ->find();


                $builder->add('category_ids', 'model', array(
        'label' => 'Category',
        'mapped' => false,
        'class' => 'Deal\MainBundle\Model\Category',
        'query' => CategoryQuery::create()
            ->filterActiveCategoriesByOptions()
            ->orderByName(),
        'property' => 'name',
        'empty_value' => 'Select categories',
        'empty_data' => null,
        'required' => true,
        'multiple' => true,
        'data' => $categories,
        'constraints'   => array(
            new NotBlank(array(
                'message' => 'Your message can not be blank! Ouch!'
            )),
        )
    ));

谢谢

Answer 1

在调用时，您应该从父表单设置此类型的required => true（这是使用BlogPostType的表单类型）：

$formBuilder->add('whatever', BlogPostType::class, ['required' => true]);

此外，您可以为required = true默认设置BlogPostType：

class BlogPostType extends AbstractType
{
    // ...

    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults([
            'required' => true
        ]);
    }
}

Answer 2

您可以使用constraints键执行此操作。像这样：

public function buildForm(FormBuilderInterface $builder, array $options) {
    $builder
        ->add('message', TextareaType::class, array(
            'required'      => true,
            'constraints'   => array(
                new NotBlank(array(
                    'message' => 'Your message can not be blank! Ouch!'
                )),
            )
        ))
    ;
}

不要忘记添加用途：

use Symfony\Component\Validator\Constraints\NotBlank;

带查询的字段不应为空

2 个答案: