How can I clear form values after successful form submission

Question

How can I clear form values after successful form submission?

These didn't help:

CONTROLLER:

namespace Car\BrandBundle\Controller;

use Car\BrandBundle\Entity\BrandEntity;
use Car\BrandBundle\Form\Type\BrandType;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;

class BrandController extends Controller
{
    public function indexAction()
    {
        $form = $this->getFrom();

        return $this->render('CarBrandBundle:Default:brand.html.twig',
                array('page' => 'Brand', 'form' => $form->createView(), 'brands' => $this->getBrands()));
    }

    public function createAction(Request $request)
    {
        if ($request->getMethod() != 'POST')
        {
            return new Response('Only POST method is allowed');
        }

        $form = $this->getFrom();

        $form->handleRequest($request);

        if ($form->isValid())
        {
            $submission = $form->getData();

            $em = $this->getDoctrine()->getManager();

            $brand = new BrandEntity();
            $brand->setName($submission->getName());

            $em->persist($brand);
            $em->flush();

            $this->redirect($this->generateUrl('brand'));
        }

        return $this->render('CarBrandBundle:Default:brand.html.twig',
                array('page' => 'Brand', 'form' => $form->createView(), 'brands' => $this->getBrands()));
    }

    private function getFrom()
    {
        return $this->createForm(new BrandType(), new BrandEntity(),
                array('action' => $this->generateUrl('brandCreate')));
    }

    private function getBrands()
    {
        $repo = $this->getDoctrine()->getRepository('CarBrandBundle:BrandEntity');
        $brands = $repo->findAll();

        return $brands;
    }
}

BazylPL · Accepted Answer · 2015-01-08T14:06:40.807

34

You simply need to unset both form and entity objects. Then, create new, clean instances so they are available in your template. Personally I prefer to do it only when the form is properly validated.

if($form->isValid()){

  // persisting and flushing the entity

  unset($entity);
  unset($form);
  $entity = new Entity();
  $form = $this->createForm(new EntityType(), $entity);
}

Works for me. Cheers.

edited Jan 08 '15 at 14:06

answered Jan 08 '15 at 13:44

BazylPL

218
3
9

Works for me, too (3.2). Thanks! – Lightningsoul Jan 25 '17 at 14:57
3

It works correctly, just comment that it is not necessary to perform the unset. – Daniel Guerrero Aug 05 '19 at 11:13
2

This is unnecessary, you only have to RETURN the return value of redirect: `return $this->redirect($this->generateUrl('brand'));` – ACs Sep 09 '20 at 12:35

TRiNE · Answer 2 · 2021-09-02T09:28:28.647

32

Resetting symfony form when same page handles the submission

In Bazyl's method creating another form after unsetting current form may be unnecessary task. I suggest to redirect to same page because symfony documentation (handling-form-submissions) also shows an example which redirects to another controller.

    if ($form->isSubmitted() && $form->isValid()) {
        // ... perform some action, such as saving the task to the database
        return $this->redirect($request->getUri());
    }

I have added sample sources to GitHub

edited Sep 02 '21 at 09:28

answered Jan 03 '16 at 12:58

TRiNE

5,020
1
29
42

2

That do the job perfectly, unsetting form and entity didn't worked for me. – Georgio Jan 29 '16 at 18:02
@tokam What is the symfony version you are using? and what was the output? – TRiNE Jul 27 '16 at 08:43
I am using Symfony > 3.0 The request still contained the post data, so if I redirect to the reference action, it will last in an infinite loop – Jakob Alexander Eichler Jul 28 '16 at 23:06
1

@tokam I tested in Symfony 3.1 and working well. Find my sources here https://github.com/lahiiru/SymfonyFormResetting – TRiNE Jul 30 '16 at 09:09
1

return $this->redirectToRoute('route_name'); – Kaizoku Gambare Jan 16 '18 at 15:18
2

After 2 years, This answer should be accepted as the good answer. It's more clean that unset(variable) then recreate – Smaïne Mar 27 '18 at 08:53
@Samine, it's July 2021, and return $this->redirect($request->getUri()); works perfectly in Symfony v.5. – Ali Jul 18 '21 at 15:59

score 2 · Answer 3 · answered Jun 15 '14 at 15:56

Not sure if it is related but when your form is valid, you do $this->redirect($this->generateUrl('brand'));. The issue is $this->redirect() simply creates a redirect response that your controller must return in order to be taking into account. In other words, just do $this->redirect() in the middle of a controller does nothing (except intantiating a RedirectResponse which be garbage collected by PHP).

score 0 · Answer 4 · answered Nov 03 '16 at 21:30

0

If using twig templates, you can just clear it there. Example:

{{ form_start(form) }}
    {{ form_widget(form.yourFieldNameHere, { 'value': '' }) }}
{{ form_end(form) }}

answered Nov 03 '16 at 21:30

KungFuMonkey

91
1
3

How can I clear form values after successful form submission

4 Answers4

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