Users can now be saved with sub_roles

app/models/user/user.rb

@@ -12,7 +12,7 @@ class User
   
   has_many :attribute_values, :autosave => true, :dependent => :destroy
   belongs_to :role
-  belongs_to :sub_role
+  has_and_belongs_to_many :sub_roles
   accepts_nested_attributes_for :attribute_values, :allow_destroy => true
   
   def name
@@ -27,7 +27,13 @@ class User
   end
   
   def get_attribute_values
-    @attribute_values ||= self.attribute_values.to_a
+    @attribute_values ||= self.attribute_values
+  end
+  
+  def get_value_from_field_id(field_id)
+    values = get_attribute_values
+    value = values.detect {|value| value.attribute_field_id == field_id} rescue nil
+    value ? value : self.attribute_values.build
   end
   
 end