预填充 EntityType 类型的 Symfony 表单的字段

Question

我正在处理一个 Symfony 项目，我目前遇到了一个问题，我想从一组对象中预填充一个表单。

有问题的表单域的类型为 EntityType::class。我想从包含相同类型（Classe）对象的集合中预先选择该字段的元素。

我找到的一个解决方案是在 buildForm 中添加一个 'data' => $defaultClass 属性，该属性将包含要插入的数据，并在 formBuilder 的参数（$options）中传递这个对象。 不幸的是，即使 $op​​tions 变量包含对象，一旦生成表单，这两个 Classe 类型的对象就不会出现在字段中。

提前感谢您的帮助。以下是相关代码：

搜索课程数据

<?php

  namespace App\Data;

  use App\Entity\Classe;
  use App\Entity\Teacher;
  use App\Entity\Location;

  class SearchCourseData
{
 /**
 * @var integer
 */
public $page = 1;

/**
 * @var Classe[]
 */
public $classe = [];

// Missing lines

/**
 * @var String
 */
public $status;
}

代码搜索课程表

class SearchCourseForm extends AbstractType {

public function buildForm(FormBuilderInterface $builder, array $options) {

    $defaultClass = new Classe();
    if (!empty($options['data']->classe)) {
        $defaultClass = $options["data"]->classe;
    }

    $builder
            ->add('classe', EntityType::class, [
                'class' => Classe::class,
                'label' => false,
                'required' => false,
                'expanded' => false,
                'multiple' => true,
                'query_builder' => function (ClasseRepository $qb) {
                    return $qb->createQueryBuilder('a')->orderBy('a.title', 'ASC');
                },
                'choice_label' => function (Classe $atelier) {
                    return($atelier->getTitle());
                },
                'attr' => [
                    'placeholder' => 'Atelier',
                    'class' => 'select-classes'
                ],
                'data' => $defaultClass,
                
            ])
               >add('status', ChoiceType::class, [
                'required' => true,
                'choices' => [
                    'Disponible' => "Disponible",
                    'Brouillon' => "Brouillon",
                    'Archivé' => "Archivé"
                ],
                'label' => false,
            ])
    ;
}

public function configureOptions(OptionsResolver $resolver) {
    $resolver->setDefaults([
        'data_class' => SearchCourseData::class,
        'method' => 'GET',
        'csrf_protection' => false
    ]);
   
}

public function getBlockPrefix() {
    return '';
}

}

代码课程控制器

/**
 * @Route("/course")
 */
class CourseController extends AbstractController {

/**
 * @Route("/",name="course")
 */
public function courseList(CourseRepository $courseRepository, Request $request) {


        $data = new SearchCourseData();
        
        $defaultClassB = $this->getDoctrine()->getRepository(Classe::class)->find(49);
        $defaultClassA = $this->getDoctrine()->getRepository(Classe::class)->find(1);

        $defaultClass[] = new ArrayCollection();
        $defaultClass[0] = $defaultClassA;
        $defaultClass[1] = $defaultClassB;

        $data->classe = $defaultClass;

        
        $form = $this->createForm(SearchCourseForm::class, $data);
       
}
}

Answer 1

@V-light 是对的，您正在数组的索引中设置一个集合 - 然后覆盖它...

$defaultClass[] = new ArrayCollection();
// === $defaultClass[0] = new ArrayCollection();

正确和最简单的方法是：

/**
 * @Route("/course")
 */
class CourseController extends AbstractController {

/**
 * @Route("/",name="course")
 */
public function courseList(CourseRepository $courseRepository, Request $request) {


        $data = new SearchCourseData();            
        $data->classe = $this->getDoctrine()->getRepository(Classe::class)->findById([49, 1]);

        $form = $this->createForm(SearchCourseForm::class, $data);
       
}
}

编辑 - 更正后的形式： 类的“数据”由 ModelTransformer 自动设置。

class SearchCourseForm extends AbstractType {

public function buildForm(FormBuilderInterface $builder, array $options) {

    $builder
            ->add('classe', EntityType::class, [
                'class' => Classe::class,
                'label' => false,
                'required' => false,
                'expanded' => false,
                'multiple' => true,
                'query_builder' => function (ClasseRepository $qb) {
                    return $qb->createQueryBuilder('a')->orderBy('a.title', 'ASC');
                },
                'choice_label' => function (Classe $atelier) {
                    return($atelier->getTitle());
                },
                'attr' => [
                    'placeholder' => 'Atelier',
                    'class' => 'select-classes'
                ],
                
            ])
               >add('status', ChoiceType::class, [
                'required' => true,
                'choices' => [
                    'Disponible' => "Disponible",
                    'Brouillon' => "Brouillon",
                    'Archivé' => "Archivé"
                ],
                'label' => false,
            ])
    ;
}

public function configureOptions(OptionsResolver $resolver) {
    $resolver->setDefaults([
        'data_class' => SearchCourseData::class,
        'method' => 'GET',
        'csrf_protection' => false
    ]);
   
}
}