/**
     * Lists all nurl entities.
     *
     * @Route("/{id}/upvote", name="tag_upvote")
     * @Method({"GET", "POST"})
     */
    public function upvoteAction(Tag $tag)
    {
        // Check if this tag has a username equal to the current one
        if($tag->getUserVoted() == $this->get('security.token_storage')->getToken()->getUser())
        {
            // Show an error if the user has already voted there
            $this->addFlash(
                'notice',
                'You have already upvoted that tag!'
            );

            // Return with the error
            return $this->redirectToRoute('tag_index');
        }

        else
        {
            // Set that that particular user has voted
            $tag -> setUserVoted($this->get('security.token_storage')->getToken()->getUser());

            // Increase the tag vote by 1 or by 5 depending on the role
            $tag -> setUpvote( $tag -> getUpvote() + 1);

            if($this->get('security.authorization_checker')->isGranted('ROLE_USER'))
            {
                $tag -> setUpvote( $tag -> getUpvote() + 5);
            }


            // Flush everything
            $em = $this->getDoctrine()->getManager();
            $em->persist($tag);
            $em->flush($tag);
        }

        return $this->redirectToRoute('tag_index');
    }

    /**
     * Lists all nurl entities.
     *
     * @Route("/{id}/downvote", name="tag_downvote")
     * @Method({"GET", "POST"})
     */
    public function downvoteAction(Tag $tag)
    {

        // Check if this tag has a username equal to the current one
        if($tag->getUserVoted() == $this->get('security.token_storage')->getToken()->getUser())
        {

            // Show an error if the user has already voted there
            $this->addFlash(

                'notice',

                'You have already downvoted that tag!'

            );

            // Return with the error
            return $this->redirectToRoute('tag_index');
        }

        else
        {
            // Set that that particular user has voted
            $tag -> setUserVoted($this->get('security.token_storage')->getToken()->getUser());

            // Increase the tag vote by 1 or by 5 depending on the role
            $tag -> setDownvote( $tag -> getDownvote() + 1);

            // Registered user vote counts as 5
            if($this->get('security.authorization_checker')->isGranted('ROLE_USER'))
            {
                $tag -> setDownvote( $tag -> getDownvote() + 5);
            }

            // Flush everything
            $em = $this->getDoctrine()->getManager();

            $em->persist($tag);

            $em->flush($tag);

        }

        return $this->redirectToRoute('tag_index');
    }