barely using moped

README.md

@@ -31,8 +31,8 @@ ref: http://www.mongodb.org/display/DOCS/GridFS+Specification
 
 it has the following features:
 
-- implementation is on top of mongoid for portability.  moped (the drive)
-  is barely used
+- implementation is on top of mongoid for portability.  moped (the driver) is
+  barely used
 
 - simple, REST-like api
 

lib/mongoid-grid_fs.rb

@@ -340,7 +340,7 @@ class GridFS
       self.default_collection_name = "#{ prefix }.chunks"
 
       field(:n, :type => Integer, :default => 0)
-      field(:data, :type => Moped::BSON::Binary)
+      field(:data, :type => (defined?(Moped) ? Moped::BSON::Binary : BSON::Binary))
 
       belongs_to(:file, :foreign_key => :files_id, :class_name => file_model_name)