Symfony Upload File in Embedded Form Is Null
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php - Symfony : how to set a file type in an edit form?
I take this error when I desire to edit an "effect" in my grade with symfony :
"The course's view data is expected to exist a "Symfony\Component\HttpFoundation\File\File", simply information technology is a "string". You can avoid this fault by setting the "data_class" selection to null or by adding a view transformer that transforms "string" to an instance of "Symfony\Component\HttpFoundation\File\File"."
I follow the documentation and adding this in my controller :
$event->setEventImage( new File($this->getParameter('images_dir').'/'.$result->getEventImage()) ); Simply it does not change anything I don't understand why.
So in that location is my entity :
/** * * @ORM\Column (type="string") * @Assert\NotBlank(message="Merci de charger un fichier au format image.") * @Assert\File(mimeTypes={ "image/*" }) */ private $eventImage; public function getEventImage(): ?string { return $this->eventImage; } public function setEventImage(string $eventImage): self { $this->eventImage = $eventImage; return $this; } And my Controller :
#[Route('/{id}/edit', proper name: 'events_edit', methods: ['Go','Mail service'])] public function edit(Asking $asking, Events $event, SluggerInterface $slugger): Response { $event->setEventImage( new File($this->getParameter('images_dir').'/'.$consequence->getEventImage()) ); $form = $this->createForm(EventsType::class, $effect); $form->handleRequest($request); if ($form->isSubmitted() && $form->isValid()) { /** @var UploadedFile $eventImage */ $eventImage = $form->get('eventImage')->getData(); // this condition is needed because the 'eventImage' field is non required // so the Image file must be processed just when a file is uploaded if ($eventImage) { $originalFilename = pathinfo($eventImage->getClientOriginalName(), PATHINFO_FILENAME); // this is needed to safely include the file name as office of the URL $safeFilename = $slugger->slug($originalFilename); $newFilename = $safeFilename . '-' . uniqid() . '.' . $eventImage->guessExtension(); // Move the file to the directory where images are stored attempt { $eventImage->movement( $this->getParameter('images_dir'), $newFilename ); } take hold of (FileException $due east) { // ... handle exception if something happens during file upload } // updates the 'eventImage' property to shop the image file name // instead of its contents $event->setEventImage($newFilename); } $this->getDoctrine()->getManager()->flush(); return $this->redirectToRoute('events_index', [], Response::HTTP_SEE_OTHER); } return $this->renderForm('events/edit.html.twig', [ 'event' => $result, 'form' => $form, ]); } And my EventsType :
public function buildForm(FormBuilderInterface $builder, array $options): void { $architect ->add('title') ->add('subtitle') ->add('content', CKEditorType::class, [ 'label' => 'content', 'required' => false, ]) ->add('dateEvent', DateTimeType::grade, [ 'widget' => 'single_text', 'label' => 'Date d\'arrivée : ' ]) ->add together('place') ->add('dateDead', DateType::class, [ 'widget' => 'single_text', 'label' => 'Appointment limite d\'inscription : ' ]) ->add('numberPersonRestricted') ->add together('eventImage', FileType::class, [ 'label' => 'Image (fichier image)', 'required' => false, 'constraints' => [ new File([ 'maxSize' => '1024k', 'mimeTypes' => [ 'image/*', ], 'mimeTypesMessage' => 'Please upload a valid image', ]) ] ]) ; } public role configureOptions(OptionsResolver $resolver): void { $resolver->setDefaults([ 'data_class' => Events::class, ]); }
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Solution:
->add('eventImage', FileType::grade, [ 'label' => 'Image (fichier epitome)', 'required' => false, 'constraints' => [ new File([ 'maxSize' => '1024k', 'mimeTypes' => [ 'image/*', ], 'mimeTypesMessage' => 'Delight upload a valid image', ]) ] 'data_class' => null ]) in your formtype, you lot can add together the parameter 'data_class' => null (like the example to a higher place) to eventImage will remove warning and work if y'all add together new file but for edit if you don't add new file it should persist null in your bd.
To overcome this trouble in social club to be able to pre-fill the file field if a file exists is to practise something like pointing to the location of the file. i.eastward. the path of the file that is saved in your database.
So what y'all're doing is checking your view to see if a file exists for the file path that exists in the database and and so pre-filling it by doing something like this (don't forget to change with your upload path):
{% if class.eventImage.vars.data %} <img src="{{ asset('/uploads/directory/' ~ form.eventImage.vars.data.filename) }}"/>{% endif %}
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