public function load(ObjectManager $em)
 {
     $comment_blog = new Comment();
     $comment_blog->setPost($em->merge($this->getReference('post-blog')));
     $comment_blog->setUsername('admin');
     $comment_blog->setAuthorEmail('*****@*****.**');
     $comment_blog->setWebsite('www.demo.pl');
     $comment_blog->setContent('YouTube has become the standard way for delivering high quality video on the web.');
     //$comment_blog->setIsApproved(0);
     $comment_shop = new Comment();
     $comment_shop->setPost($em->merge($this->getReference('post-shop')));
     $comment_shop->setUsername('journalist');
     $comment_shop->setAuthorEmail('*****@*****.**');
     $comment_shop->setContent('Bootstrap is the most widely used frontend framework right now.');
     $em->persist($comment_blog);
     $em->persist($comment_shop);
     foreach (range(0, 60) as $i) {
         $comment = new Comment();
         $comment->setPost($em->merge($this->getReference('post-post' . rand(0, 30))));
         //mamy 30 postów dlatego rand(0, 30)
         $surfer = $this->getRandomSurfer();
         $comment->setUsername($surfer['username']);
         $comment->setAuthorEmail($surfer['author_email']);
         $comment->setWebsite($this->getRandomWebsite());
         $comment->setContent($this->getRandomContent());
         $comment->setIsApproved(rand(0, 1) == 0 ? 0 : 1);
         $comment->setPublishedAt(new \DateTime('now - ' . rand(1, 4) . 'days'));
         $em->persist($comment);
     }
     $em->flush();
     $this->addReference('comment-blog', $comment_blog);
     $this->addReference('comment-shop', $comment_shop);
 }