My Own Memory Hole


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Twig pagination for Pico 2, round 2

After a first round where the challenge was to realize a pure Twig pagination for Pico 2 using it’s new HTTP parameters feature, I’ve worked on a new version. It’s purpose ? Dynamically reducing the number of displayed pages...

So, I’ve added the pagi_max_near_by variable to define how many pages around the active page should be displayed. Then, you have to add some more tests inside the includes/pagination.twig file :

{% set pagi_next_page = pagi_basepage + 1 %}{% set pagi_prev_page = pagi_basepage - 1 %}
{% if pagi_max_near_by is null %}
  {% set pagi_max_near_by = 2 %}
{% endif %}

{% if pagi_maxpage > 1 %}
  <ul>
    {% if pagi_prev_page is not null %}
      <li class="pi" {% if pagi_prev_page < 1 %}style="visibility: hidden;"{% endif %}><a href="{% if pagi_prev_page == 1 %}{{ pagi_base_url }}{% else %}{{ pagi_base_url ~ '/?' ~ pagi_http_param ~ '=' ~  pagi_prev_page }}{% endif %}" title="Newest posts" id="prev_page_link">Newest posts</a></li>
    {% endif %}

    {% if pagi_basepage - pagi_max_near_by > 1 %}
      <li class="pi">&hellip;</li>
    {% endif %}

    {% for item in range(1, pagi_maxpage|number_format) %}
      <li {% if pagi_basepage - pagi_max_near_by > item or pagi_basepage + pagi_max_near_by < item  %}style="display:none;"{% endif %} class="pi {%if item == pagi_basepage %} pi_a{%endif %}"><a href="{% if item == 1 %}{{ pagi_base_url }}{% else %}{{ pagi_base_url ~ '/?' ~ pagi_http_param ~ '=' ~ item }}{% endif %}" class="page_item {%if item == pagi_basepage %} page_active{%endif %}">{{ item }}</a></li>
    {% endfor %}

    {% if pagi_basepage + pagi_max_near_by < pagi_maxpage %}
      <li class="pi">&hellip;</li>
    {% endif %}

    {% if pagi_next_page is not null %}
      <li class="pi" {% if pagi_next_page > pagi_maxpage %}style="visibility: hidden;"{% endif %}><a href="{{ pagi_base_url ~ '/?' ~ pagi_http_param ~ '=' ~ pagi_next_page }}" title="Older posts" id="next_page_link">Older posts</a></li>
    {% endif %}
  </ul>
{% endif %}

Of course, you can adjust the pagi_max_near_by variable template by template by passing it a an argument to your Twig include ; for example, inside your index.twig template (please refer to the first post if you don’t know how to use) :

{% set pagi_slice_length = 5 %}{% set pagi_pages_array = pagesbis %}
{% set pagi_base_url = base_url %}
{% set pagi_http_param = 'page' %}
{% set pagi_max_near_by = 3 %}

[... snip ...]

{% include 'includes/pagination.twig' with [pagi_basepage, pagi_maxpage, pagi_base_url, pagi_http_param, pagi_max_near_by] %}

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