Output an order cycle in JSON

app/controllers/admin/order_cycles_controller.rb

@@ -4,6 +4,13 @@ module Admin
   class OrderCyclesController < ResourceController
     before_filter :load_order_cycle_set, :only => :index
 
+    def show
+      respond_to do |format|
+        format.html
+        format.json
+      end
+    end
+
     def new
       respond_to do |format|
         format.html

app/views/admin/order_cycles/show.rep

@@ -4,4 +4,8 @@ r.element :order_cycle, @order_cycle do
   r.element :orders_open_at
   r.element :orders_close_at
   r.element :coordinator_id
+  r.list_of :exchanges do
+    r.element :sender_id
+    r.element :receiver_id
+  end
 end