Initial migration layout

_config.yml

@@ -78,6 +78,9 @@ collections:
   versions:
     output: true
     permalink: /version/:path
+  migrations:
+    output: true
+    permalink: /migration/:path
 
 # Exclude from processing.
 # The following items will not be processed, by default. Create a custom list
@@ -122,6 +125,12 @@ defaults:
       type: "posts"
     values:
       permalink: /blog/:title/
+  -
+    scope:
+      type: "migrations"
+    values:
+      layout: migration-guide
+      toc: true
   -
     scope:
       type: redirects

_layouts/migration-guide.html

@@ -0,0 +1,83 @@
+---
+layout: base
+---
+{% assign versioned_page = page.url | startswith: '/version/' %}
+{% if versioned_page %}
+{% assign docversion = page.url | replace_regex: '^/version/([^/]+)/.*', '\1' %}
+{% else %}
+{% assign docversion = 'latest' %}
+{% endif %}
+{% assign docversion_index = docversion | replace: '.', '-' %}
+{% comment %}
+'page.path' pattern is different depending on the version
+- "Main - SNAPSHOT" -> _versions/main/guides/*.adoc
+- "x.x.x - Latest" ->  _guides/*.adoc
+=> to extract the page filename you need two different replacement tokens
+{% endcomment %}
+{% assign page_filename = page.path | replace: '_migrations/', '' %}
+{% assign relations = site.data.versioned[docversion_index].index.relations %}
+{% assign guide_url = page.url | replace_regex: '^/version/[^/]+(/.*)', '\1' %}
+
+<section class="full-width-version-bg flexfilterbar guides">
+  <div class="guideflexcontainer">
+    <div class="docslink">
+      <a class="returnlink" href="{{site.baseurl}}/migrations/"> Back to Migration Guides</a>
+    </div>
+   </div>
+</section>
+
+<div class="guide">
+  <div class="grid-wrapper">
+    <div class="grid__item width-8-12 width-12-12-m">
+      {% if docversion == 'latest' or docversion == 'main' %}
+      <a class="editlink" href="https://github.com/quarkusio/quarkusio.github.io/edit/main/_migrations/{{ page_filename }}">{{site.data.guides.texts.edit_this_page}}</a>
+      {% endif %}
+      <h1 class="text-caps">{{page.title}} {{page.docversion}}</h1>
+      {{ content }}
+    </div>
+    <div class="grid__item width-4-12 width-12-12-m tocwrapper">
+      <div class="hide-mobile toc">{{ page.document | tocify_asciidoc }}</div>
+    </div>
+  </div>
+  {% if relations and relations[guide_url] -%}
+  <h2>{{site.data.guides.texts.related_content}}</h2>
+  <div class="grid-wrapper relations">
+    {% if relations[guide_url].sameExtensions -%}
+    <div class="grid__item width-6-12 width-12-12-m">
+      <h3>{{site.data.guides.texts.on_the_same_extensions}}</h3>
+      <ul class="related-content">
+        {% for guide in relations[guide_url].sameExtensions -%}
+        {% assign is_external_guide = guide.url | startswith: 'http' %}
+        {% if is_external_guide %}
+        {% assign related_guide_url = include.url %}
+        {% elsif docversion == 'latest' %}
+        {% assign related_guide_url = site.baseurl | append: guide.url %}
+        {% else %}
+        {% assign related_guide_url = site.baseurl | append: '/version/' | append: docversion | append: guide.url %}
+        {% endif %}
+        <li class="{{ guide.type }}"><a href="{{ related_guide_url }}">{{ guide.title }}</a></li>
+        {% endfor -%}
+      </ul>
+    </div>
+    {% endif -%}
+    {% if relations[guide_url].sameTopics -%}
+    <div class="grid__item width-6-12 width-12-12-m">
+      <h3>{{site.data.guides.texts.on_the_same_topics}}</h3>
+      <ul class="related-content">
+        {% for guide in relations[guide_url].sameTopics limit:20 -%}
+        {% assign is_external_guide = guide.url | startswith: 'http' %}
+        {% if is_external_guide %}
+        {% assign related_guide_url = include.url %}
+        {% elsif docversion == 'latest' %}
+        {% assign related_guide_url = site.baseurl | append: guide.url %}
+        {% else %}
+        {% assign related_guide_url = site.baseurl | append: '/version/' | append: docversion | append: guide.url %}
+        {% endif %}
+        <li class="{{ guide.type }}"><a href="{{ related_guide_url }}">{{ guide.title }}</a></li>
+        {% endfor -%}
+      </ul>
+    </div>
+    {% endif -%}
+  </div>
+  {% endif -%}
+</div>

migrations.html

@@ -0,0 +1,14 @@
+---
+layout: base
+---
+
+<h1>Migration Guides</h1>
+
+{% assign doclist = site.migrations   %}
+    <ul>
+       {% for doc in doclist %}
+        {% assign page_filename = doc.path | replace: '_migrations/', '' | replace: 'Migration-Guide-', '' | replace: '.adoc', '' | replace: '.asciidoc', '' %}
+        <li><a href="{{ site.baseurl }}{{ doc.url }}">{{ page_filename }} </a></li>
+        {% endfor %}
+    </ul>
+