Add MiGS payment gateway

app/models/spree/gateway/migs.rb

@@ -0,0 +1,19 @@
+module Spree
+  class Gateway::Migs < Gateway
+    preference :login, :string
+    preference :password, :string
+
+    attr_accessible :preferred_login, :preferred_password
+
+
+    def provider_class
+      ActiveMerchant::Billing::MigsGateway
+    end
+
+    def options_with_test_preference
+      options_without_test_preference.merge(:test => self.preferred_test_mode)
+    end
+
+    alias_method_chain :options, :test_preference
+  end
+end

config/application.rb

@@ -37,6 +37,10 @@ module Openfoodweb
                                                       OpenFoodWeb::Calculator::Weight]
     end
 
+    # Register Spree payment methods
+    initializer "spree.gateway.payment_methods", :after => "spree.register.payment_methods" do |app|
+      app.config.spree.payment_methods << Spree::Gateway::Migs
+    end
 
     # Settings in config/environments/* take precedence over those specified here.
     # Application configuration should go into files in config/initializers