symfony3表单,无法在buildForm方法

时间:2017-06-07 02:35:05

标签: php forms symfony symfony-3.1

我真的不知道给这个帖子提供哪个标题但是,我正在使用v3.1.6中的Symfony项目,并使用ajax在我的表单字段中使用select2插件。

我想使用表单组件的事件(submit和pre_set_data)进行创建和编辑,以便像this part of the symfony doc一样动态更改字段。一切正常,直到我提交表格并给出错误注意:未定义的变量:选项

我的表单类型代码在这里     

namespace Xxx\ArticleBundle\Form;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
use Xxx\ArtistBundle\Repository\ArtistRepository;
use Symfony\Component\Form\Extension\Core\Type\TextType;
use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
use Symfony\Bridge\Doctrine\Form\Type\EntityType;
use Ivory\CKEditorBundle\Form\Type\CKEditorType;
use Symfony\Component\Form\FormInterface;
use Symfony\Component\Form\FormEvent;
use Symfony\Component\Form\FormEvents;
use Doctrine\ORM\EntityManager;

class ArticleType extends AbstractType
{
    /**
     * {@inheritdoc}
     */
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
    //$em = $options['em']; //this give me same error


        $builder
        ->add('artist', EntityType::class, array(
            'class' => 'XxxArtistBundle:Artist',
            'choice_label' => 'artist_name',
            'multiple' => false,
            'expanded' => false))
        ->add('title', TextType::class)
        ->add('categories', EntityType::class, array(
            'class' => 'XxxArticleBundle:Category',
            'choice_label' => 'name',
            'multiple' => true,
            'expanded' => true))
        ->add('image', ChoiceType::class, array(
            'expanded' => false,
            'multiple' => false))
        ->add('intro', CKEditorType::class)
        ->add('content', CKEditorType::class);

    $formModifier = function (FormInterface $form, $image) {
        $listImages = $options['em']->getRepository('XxxAppBundle:Image')->find($image)); //this line give me the error
        if (!$listImages) {
            return; //i will add a FormError in the field
        }
        $listImages = array();
        die(var_dump($listImages));

        $form->add('image', EntityType::class, array(
            'class'       => 'XxxAppBundle:Image',
            'choices'     => $listImages,
        ));
    };

    $builder->get('image')->addEventListener(
        FormEvents::POST_SUBMIT,
        function (FormEvent $event) use ($formModifier) {
            $image = $event->getForm()->getData();
            //die(var_dump($image)); //select2 field, returned null (but it's not the question
            //die(var_dump($options)); returned error 500 Notice: Undefined variable: options
            $formModifier($event->getForm()->getParent(), $image);
        }
    );
}

/**
 * {@inheritdoc}
 */
public function configureOptions(OptionsResolver $resolver)
{
    $resolver->setDefaults(array(
        'data_class' => 'Xxx\ArticleBundle\Entity\Article',
    ));
    $resolver->setRequired('em');
}

/**
 * {@inheritdoc}
 */
public function getBlockPrefix()
{
    return 'xxx_articlebundle_article';
}
}

我还想说,目标是在从仪表板创建帖子时使用与Wordpress相似的UI,在文章中设置图像,并在选择图像时将其标记为用户,无需entityType因为它会有数千个,所以我选择一个choiceType与select2插件一起使用,但是如果有人得到了更好的解决方案我就可以了。

提前帮助

1 个答案:

答案 0 :(得分:0)

当您在闭包内使用父作用域中的变量时,应将其传递给'use'语言构造。

$formModifier = function (FormInterface $form, $image) use ($options) {
    $listImages = $options['em']->getRepository('XxxAppBundle:Image')->find($image)); //this line give me the error
    if (!$listImages) {
        return; //i will add a FormError in the field
    }
    $listImages = array();
    die(var_dump($listImages));

    $form->add('image', EntityType::class, array(
        'class'       => 'XxxAppBundle:Image',
        'choices'     => $listImages,
    ));
};