more fixes to deal with nested arrays/hashes or when == is shallow

lib/smart_session_store.rb

@@ -68,7 +68,7 @@ def update
 
   private
 
-  def data= data, marshalized = nil
+  def data= data
     @data = data
     if @session && @session.data
       @original_marshalized_data = @session.data
@@ -87,25 +87,24 @@ def marshalize(data)
   end
 
   def merge_data
+    if @original_marshalized_data
+      @original_data ||= unmarshalize @original_marshalized_data
+    else
+      @original_data = {}
+    end
     @data ||= {}
     deleted_keys = @original_data.keys - @data.keys
     fresh_session = @@session_class.find_session(@session.session_id, true)
     if fresh_session && fresh_data = unmarshalize(fresh_session.data)
       deleted_keys.each {|k| fresh_data.delete k}
-      @data.each {|k,v| fresh_data[k] = v unless @original_data[k] == @data[k]}
+      @data.each {|k,v| fresh_data[k] = v unless Marshal.dump( @original_data[k]) == Marshal.dump( v)}
       @data = fresh_data
       @session = fresh_session
     end
   end
 
   def save_session
-    if @original_marshalized_data
-      @original_data ||= unmarshalize @original_marshalized_data
-    else
-      @original_data = {}
-    end
-
-    return if @data == @original_data 
+    return if marshalize(@data) == @original_marshalized_data 
     SqlSession.transaction do
       merge_data
       @session.update_session(marshalize(@data))