lib/vestal_versions.rb in sthapit-vestal_versions-0.7.1 vs lib/vestal_versions.rb in sthapit-vestal_versions-0.8.0

@@ -5,11 +5,21 @@
     def self.included(base)
       base.extend ClassMethods
     end
 
     module ClassMethods
-      def versioned
+      def versioned options = {}
+        
+        cattr_accessor :versioned_columns
+        if options[:only]
+          self.versioned_columns = Array(options[:only]).map( &:to_s )  
+        elsif options[:except]
+          self.versioned_columns = column_names - Array(options[:except]).map( &:to_s )
+        else
+          self.versioned_columns = column_names
+        end      
+        
         has_many :versions, :as => :versioned, :order => 'versions.number ASC', :dependent => :delete_all do
           def between(from, to)
             from_number, to_number = number_at(from), number_at(to)
             return [] if from_number.nil? || to_number.nil?
             condition = (from_number == to_number) ? to_number : Range.new(*[from_number, to_number].sort)
@@ -51,10 +61,10 @@
         def needs_initial_version?
           versions.empty?
         end
 
         def needs_version?
-          !changed.empty?
+          !(versioned_columns & changed).empty?
         end
 
         def reset_version(new_version = nil)
           @last_version = nil if new_version.nil?
           @version = new_version