FEATURE: Editor badge

db/migrate/20140707071913_add_self_edits_to_posts.rb

@@ -0,0 +1,12 @@
+class AddSelfEditsToPosts < ActiveRecord::Migration
+  def up
+    add_column :posts, :self_edits, :integer, null: false, default: 0
+    execute "
+    UPDATE posts p SET self_edits = (SELECT COUNT(*) FROM post_revisions pr WHERE pr.post_id = p.id AND pr.user_id=p.user_id)
+    "
+  end
+
+  def down
+    remove_column :posts, :self_edits
+  end
+end