Add OrderCycle#supplied_variants

app/models/order_cycle.rb

@@ -135,6 +135,10 @@ class OrderCycle < ActiveRecord::Base
       to_a # http://stackoverflow.com/q/15110166
   end
 
+  def supplied_variants
+    self.exchanges.incoming.map(&:variants).flatten.uniq.reject(&:deleted?)
+  end
+
   def distributed_variants
     self.exchanges.outgoing.map(&:variants).flatten.uniq.reject(&:deleted?)
   end

spec/models/order_cycle_spec.rb

@@ -211,6 +211,10 @@ describe OrderCycle do
       @oc.variants.count.should == 4
     end
 
+    it "reports on the variants supplied" do
+      @oc.supplied_variants.should match_array [@p0.master]
+    end
+
     it "reports on the variants distributed" do
       @oc.distributed_variants.should match_array [@p1.master, @p2.master, @p2_v]
     end