/**
  * Gets a form submitted via #ajax during an Ajax callback.
  *
  * This will load a form from the form cache used during Ajax operations. It
  * pulls the form info from the request body.
  *
  * @param \Symfony\Component\HttpFoundation\Request $request
  *   The current request object.
  *
  * @return \Drupal\system\FileAjaxForm
  *   A wrapper object containing the $form, $form_state, $form_id,
  *   $form_build_id and an initial list of Ajax $commands.
  *
  * @throws \Symfony\Component\HttpKernel\Exception\HttpExceptionInterface
  */
 protected function getForm(Request $request)
 {
     $form_state = new FormState();
     $form_build_id = $request->request->get('form_build_id');
     // Get the form from the cache.
     $form = $this->formBuilder->getCache($form_build_id, $form_state);
     if (!$form) {
         // If $form cannot be loaded from the cache, the form_build_id must be
         // invalid, which means that someone performed a POST request onto
         // system/ajax without actually viewing the concerned form in the browser.
         // This is likely a hacking attempt as it never happens under normal
         // circumstances.
         $this->logger->warning('Invalid form POST data.');
         throw new BadRequestHttpException();
     }
     // Since some of the submit handlers are run, redirects need to be disabled.
     $form_state->disableRedirect();
     // When a form is rebuilt after Ajax processing, its #build_id and #action
     // should not change.
     // @see \Drupal\Core\Form\FormBuilderInterface::rebuildForm()
     $form_state->addRebuildInfo('copy', ['#build_id' => TRUE, '#action' => TRUE]);
     // The form needs to be processed; prepare for that by setting a few
     // internal variables.
     $form_state->setUserInput($request->request->all());
     $form_id = $form['#form_id'];
     return new FileAjaxForm($form, $form_state, $form_id, $form['#build_id'], []);
 }
Exemplo n.º 2
0
 /**
  * Gets a form submitted via #ajax during an Ajax callback.
  *
  * This will load a form from the form cache used during Ajax operations. It
  * pulls the form info from the request body.
  *
  * @param \Symfony\Component\HttpFoundation\Request $request
  *   The current request object.
  *
  * @return \Drupal\system\FileAjaxForm
  *   A wrapper object containing the $form, $form_state, $form_id,
  *   $form_build_id and an initial list of Ajax $commands.
  *
  * @throws \Symfony\Component\HttpKernel\Exception\HttpExceptionInterface
  */
 protected function getForm(Request $request)
 {
     $form_state = new FormState();
     $form_build_id = $request->request->get('form_build_id');
     // Get the form from the cache.
     $form = $this->formBuilder->getCache($form_build_id, $form_state);
     if (!$form) {
         // If $form cannot be loaded from the cache, the form_build_id must be
         // invalid, which means that someone performed a POST request onto
         // system/ajax without actually viewing the concerned form in the browser.
         // This is likely a hacking attempt as it never happens under normal
         // circumstances.
         $this->logger->warning('Invalid form POST data.');
         throw new BadRequestHttpException();
     }
     // When a page level cache is enabled, the form-build id might have been
     // replaced from within \Drupal::formBuilder()->getCache(). If this is the
     // case, it is also necessary to update it in the browser by issuing an
     // appropriate Ajax command.
     $commands = [];
     if (isset($form['#build_id_old']) && $form['#build_id_old'] != $form['#build_id']) {
         // If the form build ID has changed, issue an Ajax command to update it.
         $commands[] = new UpdateBuildIdCommand($form['#build_id_old'], $form['#build_id']);
         $form_build_id = $form['#build_id'];
     }
     // Since some of the submit handlers are run, redirects need to be disabled.
     $form_state->disableRedirect();
     // When a form is rebuilt after Ajax processing, its #build_id and #action
     // should not change.
     // @see \Drupal\Core\Form\FormBuilderInterface::rebuildForm()
     $form_state->addRebuildInfo('copy', ['#build_id' => TRUE, '#action' => TRUE]);
     // The form needs to be processed; prepare for that by setting a few
     // internal variables.
     $form_state->setUserInput($request->request->all());
     $form_id = $form['#form_id'];
     return new FileAjaxForm($form, $form_state, $form_id, $form_build_id, $commands);
 }
Exemplo n.º 3
0
 /**
  * {@inheritdoc}
  */
 public function getCache($form_build_id, FormStateInterface $form_state)
 {
     return $this->formCache->getCache($form_build_id, $form_state);
 }