Show 'last modified at' in footer.

Author: horacekj

Gemfile

@@ -1,3 +1,9 @@
 source 'https://rubygems.org'
 gem 'jemoji'
 gem 'jekyll-sitemap'
+
+group :jekyll_plugins do
+  gem "jekyll-last-modified-at"
+end
+
+gem "webrick", "~> 1.8"

Gemfile.lock

@@ -39,6 +39,8 @@ GEM
       rouge (~> 3.0)
       safe_yaml (~> 1.0)
       terminal-table (~> 2.0)
+    jekyll-last-modified-at (1.3.2)
+      jekyll (>= 3.7, < 5.0)
     jekyll-sass-converter (2.1.0)
       sassc (> 2.0.1, < 3.0)
     jekyll-sitemap (1.4.0)
@@ -80,14 +82,17 @@ GEM
     tzinfo (2.0.4)
       concurrent-ruby (~> 1.0)
     unicode-display_width (1.7.0)
+    webrick (1.8.1)
     zeitwerk (2.4.2)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
+  jekyll-last-modified-at
   jekyll-sitemap
   jemoji
+  webrick (~> 1.8)
 
 BUNDLED WITH
    2.2.26

_config.yml

@@ -45,6 +45,7 @@ permalink: pretty
 plugins:
   - jemoji
   - jekyll-sitemap
+  - jekyll-last-modified-at
 
 #
 # !! Danger zone !!
@@ -78,8 +79,9 @@ t:
   en:
     description: "IO bus for model railroad accessories control"
     keywords: io,bus,mtb,module,uni,ttl,protocol
-    footer: "<a href='https://github.com/kmzbrnoI/mtb-web'>This page</a> was created by <a href='http://apophis.cz/'>Jan Horáček</a> using <a href='http://jekyllrb.com'>Jekyll</a> with style <a href='https://github.com/ttskch/jekyll-ttskch-theme'>TtskchTheme</a>."
   cz:
     description: "IO sběrnice pro řízení příslušenství modelových kolejišť"
     keywords: io,sběrnice,mtb,modul,uni,ttl,protokol
-    footer: "<a href='https://github.com/kmzbrnoI/mtb-web'>Tuto stránku</a> vytvořil <a href='http://apophis.cz/'>Jan Horáček</a> za použití nástroje <a href='http://jekyllrb.com'>Jekyll</a> a stylu <a href='https://github.com/ttskch/jekyll-ttskch-theme'>TtskchTheme</a>."
+
+last-modified-at:
+    date-format: '%%y-%b-%d'

_includes/footer_cz.html

@@ -0,0 +1,5 @@
+Poslední úprava stránky: {{ page.last_modified_at | date: "%-d.%-m.%Y" }}.
+Build: {{ site.time | date: "%-d.%-m.%Y" }} <br>
+<a href='https://github.com/kmzbrnoI/mtb-web'>Repozitář s webem</a>.
+Vytvořeno pomocí <a href='http://jekyllrb.com'>Jekyll</a> a stylu
+<a href='https://github.com/ttskch/jekyll-ttskch-theme'>TtskchTheme</a>.

_includes/footer_en.html

@@ -0,0 +1,5 @@
+Page last modified: {{ page.last_modified_at | date: "%-d.%-m.%Y" }}.
+Build: {{ site.time | date: "%-d.%-m.%Y" }} <br>
+<a href='https://github.com/kmzbrnoI/mtb-web'>Repository</a>.
+Created using <a href='http://jekyllrb.com'>Jekyll</a> and style
+<a href='https://github.com/ttskch/jekyll-ttskch-theme'>TtskchTheme</a>.

_layouts/default.html

@@ -94,7 +94,7 @@ <h1 class="clearfix">
 
 <footer class="site-footer">
     <div class="inner">
-        <span>{{ site.t[page.lang]['footer'] }}</span>
+        {% include footer_{{page.lang}}.html %}
     </div>
 </footer>