Localize release note links on non-English releases pages

_plugins/localize_post_url.rb

@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+
+module Jekyll
+
+  # Provides a Liquid filter to resolve a localized version of a
+  # post URL when a translation exists for the given language.
+  #
+  # Falls back to the original (English) URL if no translation is found.
+  #
+  # Example:
+  #     {{ release.post | localize_post_url: page.lang }}
+  #
+  module LocalizePostUrlFilter
+
+    def localize_post_url(url, lang)
+      return url if lang.nil? || lang == "en"
+
+      localized_url = url.sub(%r{\A/en/}, "/#{lang}/")
+      return url if localized_url == url
+
+      site = @context.registers[:site]
+
+      # Build a lookup set of all post URLs on first use (cached per site)
+      @post_urls ||= Set.new(site.posts.docs.map(&:url))
+
+      if @post_urls.include?(localized_url)
+        localized_url
+      else
+        url
+      end
+    end
+  end
+end
+
+Liquid::Template.register_filter(Jekyll::LocalizePostUrlFilter)

ja/downloads/releases/index.md

@@ -28,6 +28,6 @@ lang: ja
 <td>Ruby {{ release.version }}</td>
 <td>{{ release.date }}</td>
 <td><a href="{{ release.url.gz }}">download</a></td>
-<td><a href="{{ release.post }}">more...</a></td>
+<td><a href="{{ release.post | localize_post_url: page.lang }}">more...</a></td>
 </tr>{% endfor %}
 </table>

ko/downloads/releases/index.md

@@ -29,6 +29,6 @@ Ruby 릴리스 목록입니다.
 <td>Ruby {{ release.version }}</td>
 <td>{{ release.date }}</td>
 <td><a href="{{ release.url.gz }}">다운로드</a></td>
-<td><a href="{{ release.post }}">더 보기...</a></td>
+<td><a href="{{ release.post | localize_post_url: page.lang }}">더 보기...</a></td>
 </tr>{% endfor %}
 </table>

uk/downloads/releases/index.md

@@ -30,6 +30,6 @@ lang: uk
 <td>Ruby {{ release.version }}</td>
 <td>{{ release.date }}</td>
 <td><a href="{{ release.url.gz }}">завантажити</a></td>
-<td><a href="{{ release.post }}">детальніше...</a></td>
+<td><a href="{{ release.post | localize_post_url: page.lang }}">детальніше...</a></td>
 </tr>{% endfor %}
 </table>

vi/downloads/releases/index.md

@@ -30,6 +30,6 @@ các tarball mã nguồn.
 <td>Ruby {{ release.version }}</td>
 <td>{{ release.date }}</td>
 <td><a href="{{ release.url.gz }}">tải về</a></td>
-<td><a href="{{ release.post }}">xem thêm...</a></td>
+<td><a href="{{ release.post | localize_post_url: page.lang }}">xem thêm...</a></td>
 </tr>{% endfor %}
 </table>

zh_cn/downloads/releases/index.md

@@ -28,6 +28,6 @@ lang: zh_cn
 <td>Ruby {{ release.version }}</td>
 <td>{{ release.date }}</td>
 <td><a href="{{ release.url.gz }}">下载</a></td>
-<td><a href="{{ release.post }}">查看…</a></td>
+<td><a href="{{ release.post | localize_post_url: page.lang }}">查看…</a></td>
 </tr>{% endfor %}
 </table>