Refactor: extract methods to a module and class helper, dollarized_attribute

app/models/overhead_budget.rb

@@ -7,12 +7,6 @@ class OverheadBudget < ActiveRecord::Base
   # Validations
 
   # Accessors
-
-  def budget=(v)
-    if v.is_a? String
-      write_attribute(:budget, v.gsub(/[$ ,]/, ''))
-    else
-      write_attribute(:budget, v)
-    end
-  end
+  include DollarizedAttribute
+  dollarized_attribute :budget
 end