From ff795b2ab0040b5846960aeed238d9cd749cdad0 Mon Sep 17 00:00:00 2001
From: Philip Arndt <parndt@gmail.com>
Date: Fri, 27 May 2011 23:41:50 +1200
Subject: Added avatar to blog comments based on email address associated with
 a gravatar.

---
 app/models/blog_comment.rb             | 7 +++++++
 app/views/blog/posts/_comment.html.erb | 1 +
 2 files changed, 8 insertions(+)

diff --git a/app/models/blog_comment.rb b/app/models/blog_comment.rb
index 13aceb1..f461cdb 100644
--- a/app/models/blog_comment.rb
+++ b/app/models/blog_comment.rb
@@ -19,6 +19,13 @@ class BlogComment < ActiveRecord::Base
   scope :approved, :conditions => {:state => 'approved'}
   scope :rejected, :conditions => {:state => 'rejected'}
 
+  def avatar_url(options = {})
+    options = {:size => 60}
+    require 'digest/md5'
+    options[:size] = "?s=#{size}" if options[:size]
+    "http://gravatar.com/avatar/#{Digest::MD5.hexdigest(self.email.to_s.strip.downcase)}#{size}.jpg"
+  end
+
   def approve!
     self.update_attribute(:state, 'approved')
   end
diff --git a/app/views/blog/posts/_comment.html.erb b/app/views/blog/posts/_comment.html.erb
index ba4a508..17b2002 100644
--- a/app/views/blog/posts/_comment.html.erb
+++ b/app/views/blog/posts/_comment.html.erb
@@ -1,4 +1,5 @@
 <article class='blog_comment_message' id='<%= "comment-#{comment.to_param}" %>'>
+  <%= image_tag comment.avatar_url, :alt => comment.name, :class => 'avatar' %>
   <%= simple_format auto_link(comment.message.to_s) %>
   <footer class='blog_comment_author'>
     <p>
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