SQLSTATE [HY093]：无效的参数号：无参数的约束

Question

我得到错误“SQLSTATE [HY093]：无效参数号”，当我尝试运行以下功能：

public function showAction(Post $post, Request $request){ 

    $comment = new Comment(); 
    $comment->setPost($post); 

    //comment->setUser($user); 

    $form = $this->createForm(CommentType::class, $comment); /*obiekt formularza */ 
    $form->handleRequest($request); 


    if($form->isValid()){ 
     $em = $this->getDoctrine()->getManager(); 
     $em->persist($comment); 
     $em->flush('success', 'Komentarz został pomyślnie dodany'); 

     $this->addFlash(); 

     return $this->redirectToRoute('post_show', array('id' =>$post->getId())); 
    } 


    return $this->render('default/show.html.twig', array(
     'post' => $post, 
     'form' => $form->createView() 
    )); 
} 

我CommentTye形式：

class CommentType extends AbstractType 
{ 
/** 
* @param FormBuilderInterface $builder 
* @param array $options 
*/ 
public function buildForm(FormBuilderInterface $builder, array $options) 
{ 
    $builder 
     ->add('content', \Symfony\Component\Form\Extension\Core\Type\TextareaType::class, array(
      'label' => false, 
      'attr' => array('placeholder' => 'Treść komentarza') 
     )) 
     ->add('createdAt') 
     ->add('post') 
     ->add('user') 
     ; 
} 

/** 
* @param OptionsResolverInterface $resolver 
*/ 
public function configureOptions(OptionsResolver $resolver) 
{ 
    $resolver->setDefaults(array(
     'data_class' => 'AppBundle\Entity\Comment' 
    )); 
} 

/** 
* @return string 
*/ 
public function getName() 
{ 
    return 'appbundle_comment'; 
} 
} 

当我运行它，我得到

Message: An exception occurred while executing 'INSERT INTO comment (content, created_at, post_id, user_id) VALUES (?, ?, ?, ?)': 

SQLSTATE [HY093]：无效参数号：没有参数分别为：b ound

请帮我解决这个问题

Answer 1

你混淆了冲洗荷兰国际集团的实体管理器和添加闪光灯消息。

相反的：

$em->flush('success', 'Komentarz został pomyślnie dodany'); 
$this->addFlash(); 

你想：

$em->flush(); 
$this->addFlash('success'); 
$this->addFlash('Komentarz został pomyślnie dodany');