touch interacted_at on Post#after_create

app/models/post.rb

@@ -48,6 +48,10 @@ class Post < ActiveRecord::Base
 
   belongs_to :o_embed_cache
 
+  after_create do
+    self.touch(:interacted_at)
+  end
+
   #scopes
   scope :includes_for_a_stream, includes(:o_embed_cache, {:author => :profile}, :mentions => {:person => :profile}) #note should include root and photos, but i think those are both on status_message
 

spec/models/post_spec.rb

@@ -348,4 +348,13 @@ describe Post do
       end
     end
   end
+
+  describe "#after_create" do
+    it "sets #interacted_at" do
+      post = Factory(:status_message)
+      post.interacted_at.should_not be_blank
+    end
+  end
+
+
 end