Add "This is archived/old content" banner for old documentation pages
>>> [!note] Migrated issue
<!-- Drupal.org comment -->
<!-- Migrated from issue #3531293. -->
Reported by: [ressa](https://www.drupal.org/user/102134)
>>>
<h3 id="summary-problem-motivation">Problem/Motivation</h3>
<p>Users are finding old Drupal 6/7 doc pages, and they look relevant and updated:<br>
<a href="https://www.drupal.org/forum/support/post-installation/2025-06-07/time-zone-handling-options">https://www.drupal.org/forum/support/post-installation/2025-06-07/time-zone-handling-options</a></p>
<p>It might be worth considering adding a "This is archived/old content" banner or something, like <a href="https://api.drupal.org/api/drupal/core%21lib%21Drupal%21Core%21Language%21language.api.php/function/hook_transliteration_overrides_alter/9" rel="nofollow">the warnings that api.drupal.org</a> just got, making it clearer that some of these are old or archived documentation pages. It could be added automatically at the top of all pages under certain paths? See for example, a page like this:</p>
<p><code class=" language-php">https<span class="token punctuation">:</span><span class="token comment" spellcheck="true">//www.drupal.org/docs/extending-drupal/contributed-modules/contributed-module-archive/contrib-modules-for-building-the-site-functionality/dates-and-events/datecalendar/drupal-6-datecalendar/date-locale-time-zone</span></code> </p>
<p><a href="https://www.drupal.org/docs/extending-drupal/contributed-modules/contributed-module-archive/contrib-modules-for-building-the-site-functionality/dates-and-events/datecalendar/drupal-6-datecalendar/date-locale-time-zone" rel="nofollow">https://www.drupal.org/docs/extending-drupal/contributed-modules/contrib...</a></p>
<p>It says:</p>
<blockquote><h2>Date Locale & Time Zone settings</h2>
<p> Last <a href="https://www.drupal.org/node/767182/discuss" rel="nofollow">updated</a> on 30 April 2025<br><br>
[...]
</p>
</blockquote>
<p>... so a user may easily miss that this doc page is for an older version.<br>
Based on discussion in <span class="drupalorg-gitlab-issue-link drupalorg-gitlab-link-wrapper"><a href="https://git.drupalcode.org/project/documentation/-/work_items/2762837" class="drupalorg-gitlab-link">https://git.drupalcode.org/project/documentation/-/work_items/2762837</a></span>.</p>
<h3 id="summary-proposed-resolution">Proposed resolution</h3>
<p>Could we get an "old docs" warning banner for pages under <a href="https://www.drupal.org/docs/extending-drupal/contributed-modules/contributed-module-archive/">https://www.drupal.org/docs/extending-drupal/contributed-modules/contributed-module-archive/</a> as well, alerting users that this is for an old version, Drupal 6 or 7?</p>
<p>A rule could be, that since it's under <code class=" language-php">https<span class="token punctuation">:</span><span class="token comment" spellcheck="true">//www.drupal.org/docs/extending-drupal/contributed-modules/contributed-module-archive</span></code> a message like this could be shown at the top of the page?</p>
<div data-drupal-messages="">
<div role="contentinfo" aria-label="Error message" class="messages error">
<div role="alert">
You are browsing documentation for an older version of Drupal, which is not supported any longer, and the information may not be correct.
</div>
</div>
</div>
<div class="field-item even">
<p>We have a notice like that for D7 documentation already. For example: <a href="https://www.drupal.org/docs/7/understanding-drupal" rel="nofollow">https://www.drupal.org/docs/7/understanding-drupal</a></p>
<p><a href="https://www.drupal.org/docs/extending-drupal/contributed-modules/contributed-module-archive" rel="nofollow">https://www.drupal.org/docs/extending-drupal/contributed-modules/contrib...</a> is more of a lost & found of potentially-unmaintained documentation that could still use triage. For example, <a href="https://www.drupal.org/docs/extending-drupal/contributed-modules/contributed-modules/contributed-modules-for-developers/display-suite" rel="nofollow">https://www.drupal.org/docs/extending-drupal/contributed-modules/contrib...</a> has a supported version compatible with Drupal 11, and that documentation has a good chance of being relatively current.</p>
</div><h3 id="summary-remaining-tasks">Remaining tasks</h3><p>Decide if we should add a banner warning above old doc pages.</p><p>The D7 EOL block is inserted if it's under a parent node, judging by the code in the MR!210 "D7 eol warning block" <a href="https://git.drupalcode.org/project/drupalorg/-/merge_requests/210">drupalorg/plugins/content_types/documentation_notices.inc</a>.</p><ul>
<li>"Drupal 7": Node ID: <a href="https://www.drupal.org/node/2743405">https://www.drupal.org/node/2743405</a></li>
<li>"Contributed module documentation archive": Node ID: <a href="https://www.drupal.org/node/340271">https://www.drupal.org/node/340271</a></li>
</ul><p>It seemed not possible to move this issue over to the drupalorg project's GitLab page, so an issue with an MR was created there: <a href="https://git.drupalcode.org/project/drupalorg/-/work_items/3607013">Archived contrib module doc warning block</a>.</p>
issue
GitLab AI Context
Project: project/documentation
Instance: https://git.drupalcode.org
Repository: https://git.drupalcode.org/project/documentation
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