创建表单时，我为字段分配了一个类。发生错误，类：TextareaType、ChoiceType、DateTimeType 不存在。
<?php
namespace App\Form;
use Symfony\Component\Form\Extension\Core\Type\TextType;
use App\Entity\Notes;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
class NotesType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('title', TextType::class)
->add('description', TextareaType::class)
->add('status', ChoiceType::class, [
'choices' => [
true => 'Active',
false => 'Inactive'
]
])
->add('created', DateTimeType::class)
;
}
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults([
'data_class' => Notes::class,
]);
}
}
没错，因为
TextareaType,ChoiceType和类DateTimeType从use. 为了使它们在此类中可见，您需要导入这些名称别名。文档中的详细信息