Merge branch 'adonig-master'

Readme.rst

@@ -34,11 +34,13 @@ article category and from these standard metadata tags:
 - ``modified``
 - ``tags``
 
-Additionaly, the plugin also read these metadata tags:
+Additionally, the plugin also reads these metadata tags:
 
 - ``og_image``, an URL to an image that will represent your article;
 - ``og_description``, a short description of your article. If not
   provided, the description will be set to ``summary``, which is often
   too long;
 - ``og_locale``, the locale of your article (e.g. 'fr_CA'). If not provided,
   the locale will be set to your Pelican settings ``LOCALE``.
+
+Additionally, the plugin reads article.related_posts to set ``og:see_also``.

open_graph.py

@@ -89,6 +89,11 @@ def open_graph_tag(item):
         ogtags.append(('article:modified_time', strftime(
             item.modified, "%Y-%m-%d")))
 
+    if hasattr(item, 'related_posts'):
+        for related_post in item.related_posts:
+            url = os.path.join(item.settings.get('SITEURL', ''), related_post.url)
+            ogtags.append(('og:see_also', url))
+
     author_fb_profiles = item.settings.get('AUTHOR_FB_ID', {})
     if len(author_fb_profiles) > 0:
         for author in item.authors: