On my site I want to have a module listing all the blog posts sorted by date. We can do this out of the box using the new mod_articles (since Joomla 5.2) module.

In this tutorial I will show you how to configure the module to produce a date sorted and grouped list and then customise it further using a template override for the module to further group the blog posts by year.

We will progressively disclose the posts using the HTML <details> and <summary> elements to only show the dates and then revealing the blog posts for that month when a user explicitly requests them. This web design technique helps reduce cognitive overload and keeps interfaces clean.

Step 1 - configure the module

1. In the Joomla backend go to System → Site Modules → New.

2. Select Articles (i.e. mod_articles) as the module type.

3. In the module settings:

   • Articles to display: Set to 0 to include all articles
   • Category: choose which articles to include (e.g. select categories, include/exclude, child categories, etc.) depending on what articles you want.
   • Display Options: set “Title Only (lists)” = Yes
   • Ordering Options: Set the date to order by the articles by (eg Start Publishing Date) and the direction (eg Descending)
   • Grouping Options: set article grouping to Month and Year and choose the Date Grouping Field (eg Start Publishing Date) and Grouping Direction as descending.

4. Assign the module to a position and menu items as needed, then save & publish.

Result: On the frontend, mod_articles will output a list of your articles grouped by month/year headings

Step 2 - group by year

I have a lot of blog posts so I want to additionally breakdown the list of posts by year. There is no option for this but we can add a small snippet of php to achieve this.

By using a template override you can customize the output of a Joomla module without modifying the core files, ensuring that your changes are preserved during updates.

1. Create a template override

   • Go to System→ Site Templates.
   • Click on your active template.
   • Open the Create Overrides tab
   • Find the module we want to override (mod_articles) and click on it. Joomla will automatically create a copy of the module’s layout in your template in the folder /templates/template_name/html/mod_articles

2. Rename the override

   • I want the override just for this one use case so I need to rename the three files eg date.php, date_details.php and date._title.php
     

3. Update the module settings to use the override

   • go back to the module and the advanced tab and select the override in the layouts dropdown
     

4. Add the php to group by year

   • go back to the template editor and open the date.php file for editing

   • add the following code to split the date so that we are grouping by year and then month

     <?php
     // Group items by year and then by month
     $groupedByYear = [];
     foreach ($list as $groupName => $items) {
         // Split the group name into month and year
         [$month, $year] = explode(' ', $groupName);
         // Initialize the year group if it doesn't exist
         if (!isset($groupedByYear[$year])) {
             $groupedByYear[$year] = [];
         }
         // Add the month and its items under the year
         $groupedByYear[$year][$month] = $items;
     }
     ?>

   • There is no visual change yet!!

Step 3 - add progressive disclosure

The next step is to change the display so that we are using the HTML<details>and <summary>

• go back to the template editor and open the date.php file for editing
• remove the existing code to display the article titles

  <?php if ($grouped) : ?>
      <?php foreach ($list as $groupName => $items) : ?>
          <div class="mod-articles-group">
              <<?php echo $groupHeading; ?>><?php echo Text::_($groupName); ?></<?php echo $groupHeading; ?>>
              <?php require ModuleHelper::getLayoutPath('mod_articles', $params->get('layout', 'default') . $layoutSuffix); ?>
          </div>
      <?php endforeach; ?>
  <?php else : ?>
      <?php $items = $list; ?>
      <?php require ModuleHelper::getLayoutPath('mod_articles', $params->get('layout', 'default') . $layoutSuffix); ?>
  <?php endif;
  

• Paste this code instead

  <?php foreach ($groupedByYear as $year => $months) : ?>
      <details class="mod-articles-year">
          <summary><?php echo Text::_($year); ?></summary>
          <?php foreach ($months as $month => $items) : ?>
              <details class="mod-articles-month">
                  <summary><?php echo Text::_($month); ?></summary>
                      <?php require ModuleHelper::getLayoutPath('mod_articles', $params->get('layout', 'details') . $layoutSuffix); ?>
              </details>
          <?php endforeach; ?>
      </details>
  <?php endforeach; ?>

• Make sure that $params->get('layout', 'date') matches the name of your override

Step 4 - fine tune with some css

Everything should now be working on your site but you will probably need to add some css to improve the display.

• go back to the template editor so we can add some css
• if you are using the cassiopeia template then we can add this css to the user.css in the media/templates/site/cassiopeia/css folder. If you dont already have a user.css then you can create it now.
• add the following css
  

  /* blog roll */
  details.mod-articles-month {
      padding-inline-start: 1em;
  }
  .mod-articles-month ul {
      margin-bottom: 0;
  }
  .mod-articles-month li {
      margin-inline-start: 2em;
      list-style: disc;
  }

End Result

or you can see it at https://brian.teeman.net