fixed for Mongoid 2 support

lib/generators/impressionist_generator.rb

@@ -7,6 +7,7 @@ module Impressionist
       def copy_config_file
         template 'impression.rb', 'config/initializers/impression.rb'
       end
+
     end
   end
 end

lib/generators/templates/impression-mongoid-2.rb

@@ -0,0 +1 @@
+impression-mongoid-2.rb

lib/impressionist/controllers/mongoid/impressionist_controller.rb

@@ -1,9 +1,10 @@
 ImpressionistController::InstanceMethods.send(:define_method, :direct_create_statement) do |query_params={}|
 	# creates a statment hash that contains default values for creating an impression.
 	# if :impressionable_id is a valid ObjectId then convert it into one
+	base = (defined? Moped) ? Moped::BSON : BSON
 	query_params.reverse_merge!(
 		:impressionable_type => controller_name.singularize.camelize,
-		:impressionable_id=> !Moped::BSON::ObjectId.legal?(params[:id]) ? params[:id] : Moped::BSON::ObjectId.from_string(params[:id])
+		:impressionable_id=> !base::ObjectId.legal?(params[:id]) ? params[:id] : base::ObjectId.from_string(params[:id])
 	)
 	associative_create_statement(query_params)
 end

lib/impressionist/controllers/mongoid/mongoid2-impressionist_controller.rb

@@ -0,0 +1,10 @@
+ImpressionistController::InstanceMethods.send(:define_method, :direct_create_statement) do |query_params={}|
+	# creates a statment hash that contains default values for creating an impression.
+	# if :impressionable_id is a valid ObjectId then convert it into one
+	base = (defined? Moped) ? Moped::BSON :: BSON
+	query_params.reverse_merge!(
+		:impressionable_type => controller_name.singularize.camelize,
+		:impressionable_id=> !base::ObjectId.legal?(params[:id]) ? params[:id] : base::ObjectId.from_string(params[:id])
+	)
+	associative_create_statement(query_params)
+end