/**
* Edits an existing Tag entity.
*
* @Route("/{id}", name="tag_update")
* @Method("PUT")
* @Template("PaxyknoxNewsBundle:Tag:edit.html.twig")
*/
public function updateAction(Request $request, $id)
{
$em = $this->getDoctrine()->getManager();
$entity = $em->getRepository('PaxyknoxNewsBundle:Tag')->find($id);
if (!$entity) {
throw $this->createNotFoundException('Unable to find Tag entity.');
}
// before Tag change
// get list of all Articles with this Tag
//
$articles = $entity->getArticles();
$oldArticlesIdsList = new \Doctrine\Common\Collections\ArrayCollection();
foreach ($articles as $article) {
$oldArticlesIdsList[] = $article->getId();
}
$editForm = $this->createEditForm($entity);
$editForm->handleRequest($request);
if ($editForm->isValid()) {
try {
// Tag entity
$em->flush();
// For each selected Article on edit form get its id
//
// Check if it is in $oldArticlesIdsList
// - true remove it from the list
// - false find Article and set Tag on it
//
// Articles that will remain on the list no longer need Tag set on it
//
$data = $request->request->all();
foreach ($data as $dataParameter => $dataParameterValue) {
if (isset($dataParameterValue["articles"])) {
foreach ($dataParameterValue["articles"] as $articleIdString) {
$articleId = (int) $articleIdString;
if ($oldArticlesIdsList->contains($articleId)) {
$oldArticlesIdsList->removeElement($articleId);
} else {
$article = $em->getRepository('PaxyknoxNewsBundle:Article')->find($articleId);
$article->addTag($entity);
}
}
}
}
if (!$oldArticlesIdsList->isEmpty()) {
foreach ($oldArticlesIdsList as $articleId) {
$article = $em->getRepository('PaxyknoxNewsBundle:Article')->find($articleId);
$article->removeTag($entity);
$oldArticlesIdsList->removeElement($articleId);
}
}
// Article Entity
$em->flush();
$flashMessage = $this->get('translator')->trans('flash.tag.update_success', array('%s%' => $entity->getName()));
$this->get('session')->getFlashBag()->add('success', $flashMessage);
} catch (\Doctrine\DBAL\DBALException $e) {
$flashMessage = $this->get('translator')->trans('flash.tag.update_warning');
$this->get('session')->getFlashBag()->add('warning', $flashMessage);
return $this->redirect($this->generateUrl('tag_edit', array('id' => $id)));
}
return $this->redirect($this->generateUrl('tag_show', array('id' => $id)));
}
return array('entity' => $entity, 'edit_form' => $editForm->createView());
}
