rake github:data:update

extras/github_data.rb

@@ -27,7 +27,7 @@ def fetch!
     end
   end
 
-  def as_json(options = {})
+  def to_hash(options = {})
     hash = {}
 
     hash['gravatar'] = @gravatar
@@ -38,6 +38,10 @@ def as_json(options = {})
     hash
   end
 
+  def as_json(options = {})
+    self.to_hash
+  end
+
   private
     def repository_url
       "https://api.github.com/repos/#{@username}/#{@repository}"

lib/tasks/github.rake

@@ -0,0 +1,17 @@
+namespace :github do
+  namespace :data do
+    desc "Update projects with Github data"
+    task :update => :environment do
+      Project.all.each do |project|
+        data = GithubData.new(project.username, project.repo)
+        data.fetch!
+        attributes = data.to_hash.reject{|k,v| v.nil?}
+
+        if attributes.present?
+          project.update_attributes(attributes)
+          puts "Project: #{project.id} has been updated."
+        end
+      end
+    end
+  end
+end