Add a product with variants to the cart with max quantity for a group buy

app/controllers/spree/orders_controller_decorator.rb

@@ -16,14 +16,18 @@ Spree::OrdersController.class_eval do
   end
 
   def populate_variant_attributes
-    puts "params: #{params.inspect}"
-    puts "Has key variant_attributes? #{params.key?(:variant_attributes)}"
     if params.key? :variant_attributes
       params[:variant_attributes].each do |variant_id, attributes|
-        puts "Setting variant attributes for variant #{variant_id}, attributes: #{attributes.inspect}"
         @order.set_variant_attributes(Spree::Variant.find(variant_id), attributes)
       end
     end
+
+    if params.key? :quantity
+      params[:products].each do |product_id, variant_id|
+        max_quantity = params[:max_quantity].to_i
+        @order.set_variant_attributes(Spree::Variant.find(variant_id), {:max_quantity => max_quantity})
+      end
+    end
   end
 
 

spec/requests/consumer/add_to_cart_spec.rb

@@ -125,6 +125,26 @@ feature %q{
     li.max_quantity.should == 3
   end
 
+  scenario "adding a product with variants to the cart for a group buy" do
+    # Given a group buy product with variants and a distributor
+    d = create(:distributor)
+    p = create(:product, :distributors => [d], :group_buy => true)
+    create(:variant, :product => p)
+
+    # When I add the item to my cart
+    visit spree.product_path p
+    fill_in "quantity", :with => 2
+    fill_in "max_quantity", :with => 3
+    click_button 'Add To Cart'
+
+    # Then the item should be in my cart with correct quantities
+    order = Spree::Order.last
+    li = order.line_items.first
+    li.product.should == p
+    li.quantity.should == 2
+    li.max_quantity.should == 3
+  end
+
   scenario "adding a product to cart that is not a group buy does not show max quantity field" do
     # Given a group buy product and a distributor
     d = create(:distributor)