1 files changed, 7 insertions, 4 deletions
diff --git a/lib/opentox.rb b/lib/opentox.rb
index 186c87a..5c300cf 100644
--- a/lib/opentox.rb
+++ b/lib/opentox.rb
@@ -1,8 +1,6 @@
 module OpenTox
 
-  # Ruby interface
-
-  # create default OpenTox classes (defined in opentox-client.rb)
+  # create default OpenTox classes
   # provides Mongoid's query and persistence methods
   # http://mongoid.org/en/mongoid/docs/persistence.html
   # http://mongoid.org/en/mongoid/docs/querying.html
@@ -13,10 +11,15 @@ module OpenTox
       include Mongoid::Timestamps
       store_in collection: klass.downcase.pluralize
       field :name,  type: String
+      field :source,  type: String
       field :warnings, type: Array, default: []
+
+      def warn warning
+        $logger.warn warning
+        warnings << warning
+      end
     end
     OpenTox.const_set klass,c
   end
 
 end
-