Add modified_at info at the post layout

At the bottom of every blog post, there will now be a small text containing:

1. The localized date of the last modified time the blog post was
   modified (taking Git as a reference).
2. A link to the log at git.mssola.com for the given file.

This way readers have a better understanding of the versioning of a given page.

Signed-off-by: Miquel Sabaté Solà <msabate@suse.com>

1 files changed, 2 insertions, 14 deletions

diff --git a/_plugins/type.rb b/_plugins/type.rb
index 3107b4a..211e7e0 100644
--- a/_plugins/type.rb
+++ b/_plugins/type.rb
@@ -17,11 +17,13 @@
 
 require "time"
 require_relative "render_helper"
+require_relative "modified_time_helper"
 
 module Jekyll
   # Render og:type related tags.
   class RenderTypeTags < Liquid::Tag
     include ::Jekyll::RenderHelper
+    include ::Jekyll::ModifiedTimeHelper
 
     def render(context)
       if ["posts"].include?(context["page"]["collection"])
@@ -55,20 +57,6 @@ module Jekyll
       # Jekyll completely disregards the hour, minutes, etc., so why bother.
       page["date"].to_s.split.first
     end
-
-    # Returns the modified time of the given page.
-    def modified_time(page)
-      path = File.expand_path(File.join(File.dirname(__FILE__), "..", page["path"]))
-      out  = `git log -n 1 --pretty='format:%cd' --date=iso8601-strict -- #{path}`
-
-      begin
-        Time.iso8601(out)
-        out
-      rescue ArgumentError => e
-        puts "[WARNING] Could not parse the given modified time from Git: #{e}"
-        nil
-      end
-    end
   end
 end