A gist for pagination in Twig, based on the total number of pages, the current page and some URL-settings.

pagination.html.twig

{#
  Source: http://dev.dbl-a.com/symfony-2-0/symfony2-and-twig-pagination/
  Updated by: Simon Schick <simonsimcity@gmail.com>

  Parameters:
    * currentFilters (array) : associative array that contains the current route-arguments
    * currentPage (int) : the current page you are in
    * paginationPath (string) : the route name to use for links
    * showAlwaysFirstAndLast (bool) : Always show first and last link (just disabled)
    * lastPage (int) : represents the total number of existing pages
#}
{% spaceless %}
    {% if lastPage > 1 %}

        {# the number of first and last pages to be displayed #}
        {% set extremePagesLimit = 1 %}

        {# the number of pages that are displayed around the active page #}
        {% set nearbyPagesLimit = 2 %}

        {% set currentFilters = currentFilters|default({}) %}
        {% set paginationPath = paginationPath |default(app.request.attributes.get('_route'))%}
        {% set showAlwaysFirstAndLast = showAlwaysFirstAndLast|default(true) %}

        <nav aria-label="Page navigation">
            <ul class="pagination">
                {% if currentPage > 1 %}
                    <li class="page-item"><a class="page-link" href="{{ path(paginationPath, currentFilters|merge({page: currentPage-1})) }}">«</a></li>

                    {% for i in range(1, extremePagesLimit) if ( i < currentPage - nearbyPagesLimit ) %}
                        <li class="page-item"><a class="page-link" href="{{ path(paginationPath, currentFilters|merge({page: i})) }}">{{ i }}</a></li>
                    {% endfor %}

                    {% if extremePagesLimit + 1 < currentPage - nearbyPagesLimit %}
                        <li class="page-item disabled"><a class="page-link" href="#"><span class="sep-dots">...</span></a></li>
                    {% endif %}

                    {% for i in range(currentPage-nearbyPagesLimit, currentPage-1) if ( i > 0 ) %}
                        <li class="page-item"><a class="page-link" href="{{ path(paginationPath, currentFilters|merge({page: i})) }}">{{ i }}</a></li>
                    {% endfor %}
                {% elseif showAlwaysFirstAndLast %}
                    <li class="page-item disabled"><a class="page-link" href="#">«</a></li>
                {% endif %}

                <li class="page-item active"><a class="page-link" href="{{ path(paginationPath, currentFilters|merge({ page: currentPage })) }}">{{ currentPage }}</a></li>

                {% if currentPage < lastPage %}
                    {% for i in range(currentPage+1, currentPage + nearbyPagesLimit) if ( i <= lastPage ) %}
                        <li class="page-item"><a class="page-link" href="{{ path(paginationPath, currentFilters|merge({page: i})) }}">{{ i }}</a></li>
                    {% endfor %}

                    {% if  (lastPage - extremePagesLimit) > (currentPage + nearbyPagesLimit) %}
                        <li class="page-item disabled"><a class="page-link" href="#"><span class="sep-dots">...</span></a></li>
                    {% endif %}

                    {% for i in range(lastPage - extremePagesLimit+1, lastPage) if ( i > currentPage + nearbyPagesLimit ) %}
                        <li class="page-item"><a class="page-link" href="{{ path(paginationPath, currentFilters|merge({page: i})) }}">{{ i }}</a></li>
                    {% endfor %}

                    <li class="page-item"><a class="page-link" href="{{ path(paginationPath, currentFilters|merge({page: currentPage+1})) }}">»</a></li>
                {% elseif showAlwaysFirstAndLast %}
                    <li class="page-item disabled"><a class="page-link" href="#">»</a></li>
                {% endif %}
            </ul>
        </nav>
    {% endif %}
{% endspaceless %}