2 回答

TA贡献1846条经验 获得超7个赞
正如Cerad所建议的,dataTransformer是解决方案。
所以只是为了position,我创建了一个dataTransformer
class PositionToIdTransformer implements DataTransformerInterface
{
private $em;
public function __construct(EntityManagerInterface $em)
{
$this->em = $em;
}
public function transform($position)
{
if (null === $position) {
return '';
}
return $position->getId();
}
public function reverseTransform($id)
{
if (!$id){
return;
}
$position = $this->em->getRepository(Position::class)->find($id);
if (null === $position){
throw new TransformationFailedException(sprintf("the position '%s' does not exist!", $id));
}
return $position;
}
}
我在我的formBuilder:
class FieldPositionType extends AbstractType
{
private $pt; //PositionToIdTransformer
public function __construct(PositionToIdTransformer $pt)
{
$this->pt = $pt;
}
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('position', TextType::class)
;
$builder->get('position')->addModelTransformer($this->pt);
}
}
它就像一个魅力!

TA贡献1790条经验 获得超9个赞
查询生成器链接:https ://symfony.com/doc/current/reference/forms/types/entity.html#ref-form-entity-query-builder
如评论中所述,尝试使用它。我无法进一步阻止您,因为我看不到您的其余逻辑,但为了限制实体字段中显示的条目,它看起来像这样:
$builder->add('users', EntityType::class, [
'class' => User::class,
'query_builder' => function (EntityRepository $er) {
return $er->createQueryBuilder('u')
->orderBy('u.username', 'ASC');
},
'choice_label' => 'username',
]);
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