refactored search

app/models/wiki_page_version.rb

@@ -1,7 +1,29 @@
 class WikiPageVersion < ActiveRecord::Base
   belongs_to :wiki_page
   belongs_to :updater, :class_name => "User"
-  scope :for_user, lambda {|user_id| where("updater_id = ?", user_id)}
+
+  module SearchMethods
+    def for_user(user_id)
+      where("updater_id = ?", user_id)
+    end
+    
+    def search(params)
+      q = scoped
+      return q if params.blank?
+      
+      if params[:updater_id]
+        q = q.for_user(params[:updater_id].to_i)
+      end
+      
+      if params[:wiki_page_id]
+        q = q.where("wiki_page_id = ?", params[:wiki_page_id].to_i)
+      end
+      
+      q
+    end
+  end
+  
+  extend SearchMethods
     
   def updater_name
     User.id_to_name(updater_id)