Fix delete request for all entities

src/Bundle/ChillPersonBundle/Controller/AccompanyingCourseWorkController.php

@@ -80,10 +80,10 @@ final class AccompanyingCourseWorkController extends AbstractController
 
         $form = $this->createDeleteForm($work->getId());
 
-        if (Request::METHOD_DELETE === $request->getMethod()) {
+        if (Request::METHOD_POST === $request->getMethod()) {
             $form->handleRequest($request);
 
-            if ($form->isValid()) {
+            if ($form->isSubmitted() && $form->isValid()) {
                 $this->chillLogger->notice('An accompanying period work has been removed', [
                     'by_user' => $this->getUser()->getUsername(),
                     'work_id' => $work->getId(),
@@ -179,7 +179,6 @@ final class AccompanyingCourseWorkController extends AbstractController
 
         return $this->createFormBuilder()
             ->setAction($this->generateUrl('chill_person_accompanying_period_work_delete', $params))
-            ->setMethod('DELETE')
             ->add('submit', SubmitType::class, ['label' => 'Delete'])
             ->getForm();
     }