Copy shallow options from normal options when using scope

If the options :shallow_prefix and :shallow_path are not set in the
scope options then copy them from the normal :as and :path options
if they are set.

2 files changed, 50 insertions, 1 deletions

diff --git a/actionpack/lib/action_dispatch/routing/mapper.rb b/actionpack/lib/action_dispatch/routing/mapper.rb
index 1ad419ec80..357829e59f 100644
--- a/actionpack/lib/action_dispatch/routing/mapper.rb
+++ b/actionpack/lib/action_dispatch/routing/mapper.rb
@@ -708,7 +708,8 @@ module ActionDispatch
           options[:constraints] ||= {}
 
           unless shallow?
-            options[:shallow_path] = options[:path] if args.any?
+            options[:shallow_path] ||= options[:path] if options.key?(:path)
+            options[:shallow_prefix] ||= options[:as] if options.key?(:as)
           end
 
           if options[:constraints].is_a?(Hash)
diff --git a/actionpack/test/dispatch/routing_test.rb b/actionpack/test/dispatch/routing_test.rb
index e51ece1b2e..a47050adce 100644
--- a/actionpack/test/dispatch/routing_test.rb
+++ b/actionpack/test/dispatch/routing_test.rb
@@ -3223,6 +3223,54 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
     assert_equal 'project_files#destroy', @response.body
   end
 
+  def test_scope_path_is_copied_to_shallow_path
+    draw do
+      scope path: 'foo' do
+        resources :posts do
+          resources :comments, shallow: true
+        end
+      end
+    end
+
+    assert_equal '/foo/comments/1', comment_path('1')
+  end
+
+  def test_scope_as_is_copied_to_shallow_prefix
+    draw do
+      scope as: 'foo' do
+        resources :posts do
+          resources :comments, shallow: true
+        end
+      end
+    end
+
+    assert_equal '/comments/1', foo_comment_path('1')
+  end
+
+  def test_scope_shallow_prefix_is_not_overwritten_by_as
+    draw do
+      scope as: 'foo', shallow_prefix: 'bar' do
+        resources :posts do
+          resources :comments, shallow: true
+        end
+      end
+    end
+
+    assert_equal '/comments/1', bar_comment_path('1')
+  end
+
+  def test_scope_shallow_path_is_not_overwritten_by_path
+    draw do
+      scope path: 'foo', shallow_path: 'bar' do
+        resources :posts do
+          resources :comments, shallow: true
+        end
+      end
+    end
+
+    assert_equal '/bar/comments/1', comment_path('1')
+  end
+
 private
 
   def draw(&block)