<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace App\Controller;
use App\Entity\Comment;
use App\Entity\Post;
use App\Events\CommentCreatedEvent;
use App\Form\CommentType;
use App\Repository\PostRepository;
use App\Repository\TagRepository;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Cache;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\IsGranted;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\ParamConverter;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Annotation\Route;
/**
* Controller used to manage blog contents in the public part of the site.
*
* @Route("/blog")
*
* @author Ryan Weaver <weaverryan@gmail.com>
* @author Javier Eguiluz <javier.eguiluz@gmail.com>
*/
class BlogController extends AbstractController
{
/**
* @Route("/", defaults={"page": "1", "_format"="html"}, methods="GET", name="blog_index")
* @Route("/rss.xml", defaults={"page": "1", "_format"="xml"}, methods="GET", name="blog_rss")
* @Route("/page/{page<[1-9]\d*>}", defaults={"_format"="html"}, methods="GET", name="blog_index_paginated")
* @Cache(smaxage="10")
*
* NOTE: For standard formats, Symfony will also automatically choose the best
* Content-Type header for the response.
* See https://symfony.com/doc/current/routing.html#special-parameters
*/
public function index(Request $request, int $page, string $_format, PostRepository $posts, TagRepository $tags): Response
{
$tag = null;
if ($request->query->has('tag')) {
$tag = $tags->findOneBy(['name' => $request->query->get('tag')]);
}
$latestPosts = $posts->findLatest($page, $tag);
// Every template name also has two extensions that specify the format and
// engine for that template.
// See https://symfony.com/doc/current/templates.html#template-naming
return $this->render('blog/index.'.$_format.'.twig', [
'paginator' => $latestPosts,
]);
}
/**
* @Route("/posts/{slug}", methods="GET", name="blog_post")
*
* NOTE: The $post controller argument is automatically injected by Symfony
* after performing a database query looking for a Post with the 'slug'
* value given in the route.
* See https://symfony.com/doc/current/bundles/SensioFrameworkExtraBundle/annotations/converters.html
*/
public function postShow(Post $post): Response
{
// Symfony's 'dump()' function is an improved version of PHP's 'var_dump()' but
// it's not available in the 'prod' environment to prevent leaking sensitive information.
// It can be used both in PHP files and Twig templates, but it requires to
// have enabled the DebugBundle. Uncomment the following line to see it in action:
//
// dump($post, $this->getUser(), new \DateTime());
return $this->render('blog/post_show.html.twig', ['post' => $post]);
}
/**
* @Route("/comment/{postSlug}/new", methods="POST", name="comment_new")
* @IsGranted("IS_AUTHENTICATED_FULLY")
* @ParamConverter("post", options={"mapping": {"postSlug": "slug"}})
*
* NOTE: The ParamConverter mapping is required because the route parameter
* (postSlug) doesn't match any of the Doctrine entity properties (slug).
* See https://symfony.com/doc/current/bundles/SensioFrameworkExtraBundle/annotations/converters.html#doctrine-converter
*/
public function commentNew(Request $request, Post $post, EventDispatcherInterface $eventDispatcher): Response
{
$comment = new Comment();
$comment->setAuthor($this->getUser());
$post->addComment($comment);
$form = $this->createForm(CommentType::class, $comment);
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid()) {
$em = $this->getDoctrine()->getManager();
$em->persist($comment);
$em->flush();
// When an event is dispatched, Symfony notifies it to all the listeners
// and subscribers registered to it. Listeners can modify the information
// passed in the event and they can even modify the execution flow, so
// there's no guarantee that the rest of this controller will be executed.
// See https://symfony.com/doc/current/components/event_dispatcher.html
$eventDispatcher->dispatch(new CommentCreatedEvent($comment));
return $this->redirectToRoute('blog_post', ['slug' => $post->getSlug()]);
}
return $this->render('blog/comment_form_error.html.twig', [
'post' => $post,
'form' => $form->createView(),
]);
}
/**
* This controller is called directly via the render() function in the
* blog/post_show.html.twig template. That's why it's not needed to define
* a route name for it.
*
* The "id" of the Post is passed in and then turned into a Post object
* automatically by the ParamConverter.
*/
public function commentForm(Post $post): Response
{
$form = $this->createForm(CommentType::class);
return $this->render('blog/_comment_form.html.twig', [
'post' => $post,
'form' => $form->createView(),
]);
}
/**
* @Route("/search", methods="GET", name="blog_search")
*/
public function search(Request $request, PostRepository $posts): Response
{
if (!$request->isXmlHttpRequest()) {
return $this->render('blog/search.html.twig');
}
$query = $request->query->get('q', '');
$limit = $request->query->get('l', 10);
$foundPosts = $posts->findBySearchQuery($query, $limit);
$results = [];
foreach ($foundPosts as $post) {
$results[] = [
'title' => htmlspecialchars($post->getTitle(), ENT_COMPAT | ENT_HTML5),
'date' => $post->getPublishedAt()->format('M d, Y'),
'author' => htmlspecialchars($post->getAuthor()->getFullName(), ENT_COMPAT | ENT_HTML5),
'summary' => htmlspecialchars($post->getSummary(), ENT_COMPAT | ENT_HTML5),
'url' => $this->generateUrl('blog_post', ['slug' => $post->getSlug()]),
];
}
return $this->json($results);
}
}