some fixes

src/Controller/CategoryController.php

@@ -17,6 +17,7 @@ class CategoryController extends AbstractController
     public function index(): Response
     {
         return $this->render('category/categories.html.twig', [
+//            'controller_name' => 'CategoryController',
             'categories' => $this->getDoctrine()->getRepository(Category::class)->findAll()
         ]);
     }
@@ -39,6 +40,7 @@ class CategoryController extends AbstractController
             return $this->redirectToRoute('categories');
         }
         return $this->render('category/categories-form.html.twig', [
+//            'controller_name' => 'CategoryController',
             'form' => $form->createView(),
             'title' => 'Add new category'
         ]);
@@ -60,11 +62,11 @@ class CategoryController extends AbstractController
         $form = $this->createForm(CategoryType::class, $cat);
         $form->handleRequest($request);
         if ($form->isSubmitted() && $form->isValid()) {
-            $cat = $form->getData();
             $manager->flush();
             return $this->redirectToRoute('categories');
         }
         return $this->render('category/categories-form.html.twig', [
+//            'controller_name' => 'CategoryController',
             'form' => $form->createView(),
             'title' => 'Edit '.$cat->getName()
         ]);
@@ -90,7 +92,8 @@ class CategoryController extends AbstractController
     public function categorySummary(): Response
     {
         return $this->render('category/category_summary.html.twig', [
-            'Categories' => array_filter($this->getDoctrine()->getRepository(Category::class)->findAll(), static function ($c) {return count($c->getPosts())>=1;})
+//            'controller_name' => 'CategoryController',
+            'Categories' => $this->getDoctrine()->getRepository(Category::class)->getCategorySummary()
         ]);
     }
 }

src/Controller/CommentController.php

@@ -15,6 +15,7 @@ class CommentController extends AbstractController
     public function index(): Response
     {
         return $this->render('comment/comments.html.twig', [
+//            'controller_name' => 'CommentController',
             'comments' => $this->getDoctrine()->getRepository(Comment::class)->findAll()
         ]);
     }
@@ -56,6 +57,7 @@ class CommentController extends AbstractController
     public function recentComment(): Response
     {
         return $this->render('comment/recent_comment.html.twig', [
+//            'controller_name' => 'CommentController',
             'comments' => $this->getDoctrine()->getRepository(Comment::class)->findBy(array('valid' => true), array('createdAt' => 'DESC'), 5, 0)
         ]);
     }

src/Controller/PostController.php

@@ -2,6 +2,7 @@
 
 namespace App\Controller;
 
+use App\Entity\Category;
 use App\Entity\Comment;
 use App\Entity\Post;
 use App\Form\CommentType;
@@ -23,15 +24,10 @@ class PostController extends AbstractController
     public function index(int $page = 0): Response
     {
         $repo = $this->getDoctrine()->getRepository(Post::class);
-        $pages = (int) round(count($repo->getPublished())/5, 0, PHP_ROUND_HALF_UP);
-        if ($page < 0) {
-            $page = 0;
-        } else if ($page > $pages) {
-            $page = $pages;
-        }
         return $this->render('home/index.html.twig', [
+//            'controller_name' => 'HomeController', // not use on template
             'posts' => $repo->getPublished($page*5, 5),
-            'pages' => $pages-1,
+            'pages' => round(count($repo->getPublished())/5, 0, PHP_ROUND_HALF_UP)-1,
             'page' => $page
         ]);
     }
@@ -44,10 +40,13 @@ class PostController extends AbstractController
      */
     public function post(Request $request, string $slug): Response
     {
+        /** @var Post $post */
         $post = $this->getDoctrine()->getRepository(Post::class)->findOneBy(array('slug' => $slug));
-        if (!$post) {
+
+        if (null === $post || $post->getPublishedAt() > new \DateTime()) {
             throw $this->createNotFoundException("Post not found");
         }
+
         $form = $this->commentFormGenerator($post);
         $form->handleRequest($request);
         if ($form->isSubmitted() && $form->isValid()) {
@@ -59,6 +58,7 @@ class PostController extends AbstractController
             $form = $this->commentFormGenerator($post);
         }
         return $this->render('post/index.html.twig', [
+//            'controller_name' => 'PostController', // not use on template
             'post' => $post,
             'form' => $form->createView()
         ]);
@@ -70,6 +70,7 @@ class PostController extends AbstractController
     public function posts(): Response
     {
         return $this->render('post/posts.html.twig', [
+//            'controller_name' => 'PostController', // not use on template
             'posts' => $this->getDoctrine()->getRepository(Post::class)->findBy(array(), array('publishedAt' => 'DESC'))
         ]);
     }
@@ -93,6 +94,7 @@ class PostController extends AbstractController
             return $this->redirectToRoute('posts');
         }
         return $this->render('post/posts-form.html.twig', [
+//            'controller_name' => 'PostController', // not use on template
             'form' => $form->createView(),
             'title' => 'Add new post'
         ]);
@@ -121,6 +123,7 @@ class PostController extends AbstractController
             return $this->redirectToRoute('posts');
         }
         return $this->render('post/posts-form.html.twig', [
+//            'controller_name' => 'PostController', // not use on template
             'form' => $form->createView(),
             'title' => 'Edit '.$post->getTitle()
         ]);

src/Repository/CategoryRepository.php

@@ -19,6 +19,20 @@ class CategoryRepository extends ServiceEntityRepository
         parent::__construct($registry, Category::class);
     }
 
+    /**
+     * @return Category[]
+     */
+    public function getCategorySummary(): array
+    {
+        $qb = $this->createQueryBuilder('c')
+            ->addSelect('p')
+            ->join('c.posts', 'p')
+            ->where('p.publishedAt <= :now')
+            ->setParameter('now', new \DateTime());
+
+        return $qb->getQuery()->getResult();
+    }
+
     // /**
     //  * @return Category[] Returns an array of Category objects
     //  */