1 files changed, 6 insertions, 5 deletions
diff --git a/actionpack/lib/action_dispatch/routing/mapper.rb b/actionpack/lib/action_dispatch/routing/mapper.rb
index 9aa34e7ba5..9a92ed0b62 100644
--- a/actionpack/lib/action_dispatch/routing/mapper.rb
+++ b/actionpack/lib/action_dispatch/routing/mapper.rb
@@ -695,15 +695,14 @@ module ActionDispatch
             raise ArgumentError, "Unknown scope #{on.inspect} given to :on"
           end
 
-          if @scope[:scope_level] == :resource
+          if @scope[:scope_level] == :resources
+            args.push(options)
+            return nested { match(*args) }
+          elsif @scope[:scope_level] == :resource
             args.push(options)
             return member { match(*args) }
           end
 
-          if resource_scope?
-            raise ArgumentError, "can't define route directly in resource(s) scope"
-          end
-
           action = args.first
           path = path_for_action(action, options.delete(:path))
 
@@ -900,6 +899,8 @@ module ActionDispatch
             end
 
             name = case @scope[:scope_level]
+            when :nested
+              [member_name, prefix]
             when :collection
               [prefix, name_prefix, collection_name]
             when :new