Twig macro to display a pagination, aka page browser.

pagebrowser.html.twig

{*
    Twig macro to display a pagination, aka page browser.
    
    Usage :
       First you have to import the macro using "import" :
            {% from 'AcmeBundle:Default:Macro/pagebrowser.html.twig' import pagebrowser %}
        Then, call the function :
            {{ pagebrowser(route, routeParams, totalPages, currentPage, browserSize) }}
            Where :
                route :  the list route that have the page param, usually 'app.request.attributes.get('_route')'
                routeParams : additional parameters, usually 'app.request.attributes.get('_route_params')'
                totalPages : total number of pages, usually '(entities|length / entitiesPerPage)|ceil'
                currentPage : the current page number, usually 'app.request.get('currentPage')'
                browserSize : number of elements to be displayed in the browser, usually '4'
                
        Optionnaly, you may customise some stuff :
            Change the "pageParameter" variable to change the GET parameter name (default : "currentPage").
            Change the labels or add them to your translations :
                pagebrowser.firstPage : "First page anchor"
                pagebrowser.prevPage : "Previous page anchor"
                pagebrowser.nPages : "Some pages..."
                pagebrowser.xPage : "A page anchor"
                pagebrowser.currentPage: "Current page anchor"
                pagebrowser.lastPage: "Last page anchor"
                pagebrowser.nextPage: "Next page anchor"
*}
{%- macro pagebrowser(route, routeParams, totalPages, currentPage, browserSize) -%}
    {% set pageParameter = 'currentPage' %}
    {% set currentPage = (currentPage is defined and not currentPage is null ? currentPage : 0) -%}
    {% set browserSize = (browserSize is defined and not browserSize is null ? browserSize : 6) -%}
    
    {% set pagesAfter = (browserSize // 2) %}
    {% set pagesBefore = browserSize - pagesAfter - 1 %}
 
    {% if (currentPage-pagesBefore)<0 %}
        {% set pagesBefore = currentPage %}
        {% set pagesAfter = browserSize - pagesBefore - 1 %}
        {%if (currentPage + pagesAfter) >= totalPages %}
            {% set pagesAfter = totalPages - currentPage - 1 %}
        {% endif %}
    {% elseif (currentPage + pagesAfter) >= totalPages %}
        {% set pagesAfter = totalPages - currentPage - 1 %}
        {% set pagesBefore = browserSize - pagesAfter - 1 %}
        {%if (currentPage-pagesBefore) < 0 %}
            {% set pagesBefore = currentPage %}
        {% endif %}
    {% endif -%}
{% if currentPage >= 0 and currentPage < totalPages %}    
    <ul class="pagination">
    {%- if currentPage != 0 %}
        <li class="previous">
            <a href="{{ path(route, routeParams|merge({(pageParameter): 0})) }}">{{'pagebrowser.firstPage'|trans()}}</a>
        </li>
        <li class="previous">
            <a href="{{ path(route, routeParams|merge({(pageParameter): currentPage - 1})) }}">{{'pagebrowser.prevPage'|trans()}}</a>
        </li>
    {% else %}
        <li class="disabled previous">
            <a href="#">{{'pagebrowser.firstPage'|trans()}}</a>
        </li>
        <li class="disabled previous">
            <a href="#">{{'pagebrowser.prevPage'|trans()}}</a>
        </li>
    {% endif -%}
    
    {%- if currentPage - pagesBefore > 0 -%}
        <li class="disabled"><a href="#">{{'pagebrowser.nPages'|trans()}}</a></li>
    {%- endif -%}
    
    {%if pagesBefore > 0 %}
    {% for p in 0..(pagesBefore-1) %}
        {% set pid = currentPage - (pagesBefore - p)%}
        <li>
            <a href="{{ path(route, routeParams|merge({(pageParameter): pid})) }}">{{'pagebrowser.xPage'|trans()|format(pid+1)}}</a>
        </li>
    {% endfor %}
    {% endif -%}

    {#<li><a href="{{ path(route, {'currentPage': currentPage}) }}">{{'pagebrowser.currentPage'|trans()|format(currentPage)}}</a></li>#}
    <li class="active"><a href="#">{{'pagebrowser.currentPage'|trans()|format(currentPage + 1)}}</a></li>
    
    {%if pagesAfter > 0 %}
    {% for p in 0..(pagesAfter-1) %}
        {% set pid = currentPage + p + 1%}
        <li>
            <a href="{{ path(route, routeParams|merge({(pageParameter): pid})) }}">{{'pagebrowser.xPage'|trans()|format(pid+1)}}</a>
        </li>
    {% endfor %}
    {% endif %}
    
    {%- if currentPage + pagesAfter < totalPages-1 -%}
        <li class="disabled"><a href="#">{{'pagebrowser.nPages'|trans()}}</a></li>
    {%- endif -%}
    
    {% if currentPage != totalPages-1 %}
        <li class="next">
            <a href="{{ path(route, routeParams|merge({(pageParameter): currentPage + 1})) }}">{{'pagebrowser.nextPage'|trans()}}</a>
        </li>
        <li class="next">
            <a href="{{ path(route, routeParams|merge({(pageParameter): totalPages - 1})) }}">{{'pagebrowser.lastPage'|trans()}}</a>
        </li>
    {% else %}
        <li class="disabled next">
            <a href="#">{{'pagebrowser.nextPage'|trans()}}</a>
        </li>
        <li class="disabled next">
            <a href="#">{{'pagebrowser.lastPage'|trans()}}</a>
        </li>
    {% endif %}
    </ul>
{% endif -%}
{%- endmacro %}