Adding last_activity_at on public profile (needs timezone handling)

Changing to rails 2.1.1

app/controllers/application.rb

@@ -23,6 +23,7 @@ def pagination_defaults
 
   def set_profile
     @p = @u.profile if @u && @u.profile
+    @p.update_attribute :last_activity_at, Time.now if @p
   end
 
 

app/views/profiles/_bio.html.erb

@@ -4,7 +4,8 @@ profile ||= @profile
 <div class="activity_box learn">
   <div class="left avatar"><%= icon profile, :big %></div>
   <div class="right bio_stuff">
-    <h1><%= h profile.f %></h1> 
+    <h1><%= h profile.f %></h1>
+ 	<% unless profile.last_activity_at.blank? %><small>Last seen <%= time_ago_in_words profile.last_activity_at %> ago</small><% end %>
 	  <h3><%= location_link profile %></h3>
 		<% unless profile.about_me.blank? %><div><strong>About:</strong> <%= sanitize(textilize(profile.about_me)) %></div><% end %>
 		<% unless profile.website.blank? %><div><strong>Website:</strong> <%= link_to h(profile.website), h(profile.website) %></div><% end %>

config/environment.rb

@@ -1,5 +1,5 @@
 
-RAILS_GEM_VERSION = '2.1.0' unless defined? RAILS_GEM_VERSION
+RAILS_GEM_VERSION = '2.1.1' unless defined? RAILS_GEM_VERSION
 
 # Bootstrap the Rails environment, frameworks, and default configuration
 require File.join(File.dirname(__FILE__), 'boot')

db/migrate/006_add_profile_last_activity_at.rb

@@ -0,0 +1,9 @@
+class AddProfileLastActivityAt < ActiveRecord::Migration
+  def self.up
+    add_column :profiles, :last_activity_at, :datetime
+  end
+
+  def self.down
+    remove_column :last_activity_at
+  end
+end