hella open graph tags

added some basic open graph tags to the posts#show page.

app/helpers/open_graph_helper.rb

@@ -0,0 +1,38 @@
+module OpenGraphHelper
+  def og_title(post)
+    meta_tag_with_property('og:title', post_page_title(post))
+  end
+
+  def og_type(post)
+    meta_tag_with_property('og:type', 'article')
+  end
+
+  def og_url(post)
+    meta_tag_with_property('og:url', post_url(post))
+  end
+
+  def og_image(post)
+    if post.photos.present?
+      img_url = post.photos.first.url(:thumb_medium)
+      meta_tag_with_property('og:image', img_url)
+    end
+  end
+
+  def og_site_name
+    meta_tag_with_property('og:site_name', 'Diaspora*')
+  end
+
+  def og_description(post)
+    meta_tag_with_property('og:description', post_page_title(post))
+  end
+
+  def og_page_specific_tags(post)
+    [og_title(post), og_type(post), 
+      og_url(post), og_image(post), 
+      og_description(post)].join(' ').html_safe
+  end
+
+  def meta_tag_with_property(name, content)
+    content_tag(:meta, '', :property => name, :content => content)
+  end
+end

app/views/layouts/application.html.haml

@@ -11,6 +11,7 @@
 
     %meta{:name => "description", :content => "Diaspora*"}
     %meta{:name => "author", :content => "Diaspora, Inc."}
+    = og_site_name
 
     %link{:rel => 'shortcut icon', :href => "#{image_path('favicon.png')}" }
     %link{:rel => 'apple-touch-icon', :href => "#{image_path('apple-touch-icon.png')}"}

app/views/layouts/application.mobile.haml

@@ -18,7 +18,7 @@
     %meta{:name => "MobileOptimized", :content => "320"}
     / Force cleartype on WP7
     %meta{'http-equiv' => "cleartype", :content => 'on'}
-
+    = og_site_name
     / Home screen icon (sized for retina displays)
     %link{:rel => 'apple-touch-icon', :href => '/apple-touch-icon.png'}
     / For Nokia devices
@@ -30,6 +30,7 @@
     /%link{:rel => "apple-touch-startup-image", :href => "/images/apple-splash.png"}
 
     / Stylesheets
+
     = stylesheet_link_tag :mobile, :format => 'all'
     = yield(:custom_css)
 

app/views/layouts/post.html.haml

@@ -19,6 +19,7 @@
     %link{:rel => 'shortcut icon', :href => '/favicon.png'}
     %link{:rel => 'apple-touch-icon', :href => '/apple-touch-icon.png'}
 
+    = og_site_name
     %title
       = page_title yield(:page_title)
 
@@ -46,6 +47,7 @@
     = current_user_atom_tag
     - if @post.present?
       %link{:rel => 'alternate', :type => "application/json+oembed", :href => "#{oembed_url(:url => post_url(@post))}"}
+      = og_page_specific_tags(@post)
 
     = yield(:head)
     = csrf_meta_tag