spree/spree — pull request #2363 by huoxito (2012-12-29 05:50:39+00:00)
Title: Improves promotion#products collection method

promotion#products should return products from all rules that respond to
a products method and not just from the built in PromotionRule::Product
class.

This should make it easier for developers to use their custom rules to
interact with Spree::Promotion