Symfony2 form refresh same page after submit - forms

Question

I have a form whose content is created from a DB.
in my controller i have:
/**
* #Route("/HR/manage/{projectID}", name="hr_manage")
*/
public function manageHRAction(Request $request, $projectID)
{
//here I get all the data from DB and create the form
if ($form->isValid())
{
//here I do all the relevant changes in the DB
return $this->render('HR/show.html.twig', array('hrlist' => $HRsInMyDomain, 'form' => $form->createView(), 'HRs' => $HRsInThisProject, 'project' => $prj, ));
}
return $this->render('HR/show.html.twig', array('hrlist' => $HRsInMyDomain, 'form' => $form->createView(), 'HRs' => $HRsInThisProject, 'project' => $prj, ));
}
It updates the info on the DB properly, but it does not build again the form with updated data. Instead of the return inside the "isValid()" I simply need a refresh on the current page.
I assume it's possible and easy to accomplish, but I failed to find how to do it :/
EDIT - here comes more relevant code:
/**
* #Route("/HR/manage/{projectID}", name="hr_manage")
*/
public function manageHRAction(Request $request, $projectID)
{
$user = $this->container->get('security.context')->getToken()->getUser(); //get current user
$em = $this->getDoctrine()->getManager(); //connect to DB
$prj = $this->getDoctrine()->getRepository('AppBundle:Project')->findOneById($projectID);
[...]
// here comes some code to generate the list of $HRsInThisProject and the list of roles ($rolesListForForm)
[...]
foreach ($HRsInThisProject as $key => $HR)
{
$form->add('roleOf_'.$key, 'choice', array('choices' => $rolesListForForm, 'required' => true, 'data' => $HR['role'], 'label' => false, ));
$form->add('isActive_'.$key, 'choice', array('choices' => [0 => 'Inactive', 1 => 'Active'] , 'required' => true, 'data' => $HR['is_active'], 'label' => false, ));
}
[...]
// here there is some code to get the $HRsInMyDomainForForm
[...]
$form->add('HRid', 'choice', array('choices' => $HRsInMyDomainForForm,'required' => false, 'placeholder' => 'Choose a resource', 'label' => false, ));
$form->add('role', 'choice', array('choices' => $rolesListForForm,'required' => false, 'placeholder' => 'Choose a role', 'label' => false, ));
$form->add('save', 'submit', array('label' => 'Save'));
$form->handleRequest($request);
if ($form->isValid())
{
{
[...] here there is a huge portion of code that determines if I need to generate a new "event" to be stored, or even multiple events as I can change several form fields at once
// If I needed to create the event I persist it (this is inside a foreach)
$em->persist($newHREvent);
}
$em->flush();
return $this->render('HR/show.html.twig', array('projectID' => $prj->getId(), 'hrlist' => $HRsInMyDomain, 'form' => $form->createView(), 'HRs' => $HRsInThisProject, 'project' => $prj, ));
}
return $this->render('HR/show.html.twig', array('projectID' => $prj->getId(), 'hrlist' => $HRsInMyDomain, 'form' => $form->createView(), 'HRs' => $HRsInThisProject, 'project' => $prj, ));
}
I also include a screenshot of the form:
If a user selects to add a new resouce, I need to persist it to DB (and that is done properly) but then I need to see it in the list of available HRs, without the need for the user to reload the page.

Answer 1

More dynamic way would be:
$request = $this->getRequest();
return $this->redirectToRoute($request->get('_route'), $request->query->all());
or simply
return $this->redirect($request->getUri());

Answer 2

I managed to solve it in a simple (and I hope correct) way.
I simply substituted the "render" inside the isValid() with the following:
return $this->redirect($this->generateUrl('hr_manage', array('projectID' => $prj->getId())));
I works, but does anybody foresee problems with this solution?

Answer 3

You have to link the form to the request.
$entity = new Entity();
$form = $this->createFormBuilder($entity)
->add('field1', 'text')
->add('field2', 'date')
->add('save', 'submit', array('label' => 'Submit'))
->getForm();
$form->handleRequest($request); // <= this links the form to the request.
only after that you test $form->isValid() and pass this form when rendering the template. If you already did this and haven't included in the code above please show more code for better help.

Answer 4

Here is the right way to do it. Event though you have $projectId slug, in Action you can pass whole Object, in this case Project. Symfony will take care for the rest (fetching right Project entity for you.
/**
* #Route("/HR/manage/{projectID}", name="hr_manage")
*/
public function manageHRAction(Request $request, Project $project)
{
$form = $this->createForm(new ProjectType(), $project);
$form->handleRequest($request);
// ... your business logic or what ever
//here I get all the data from DB and create the form
if ($form->isValid() && $form->isSubmitted()) {
$em->persist($project);
// no need to flush since entity already exists
// no need to redirect
}
// here $form->createView() will populate fields with data since you have passed Poroject $project to form
return $this->render('HR/show.html.twig', array('hrlist' => $HRsInMyDomain, 'form' => $form->createView(), 'HRs' => $HRsInThisProject, 'project' => $prj, ));
}
Update
According to your edit, you need to use javascript for client-side dom manipulation. Check this link from Symfony official document embedded forms. Here you'll find an example of what you're trying to accomplish.