Merge pull request rails#53049 from fatkodima/fix-link_to-with-symbol-rel

Fix `link_to` when passed `:rel` is a symbol

Author: kamipo

actionview/lib/action_view/helpers/url_helper.rb

@@ -710,7 +710,7 @@ def link_to_remote_options?(options)
         end
 
         def add_method_to_attributes!(html_options, method)
-          if method_not_get_method?(method) && !html_options["rel"]&.include?("nofollow")
+          if method_not_get_method?(method) && !html_options["rel"].to_s.include?("nofollow")
             if html_options["rel"].blank?
               html_options["rel"] = "nofollow"
             else

actionview/test/template/url_helper_test.rb

@@ -579,6 +579,11 @@ def test_link_tag_using_post_javascript_and_rel
       %{<a href="http://www.example.com" data-method="post" rel="example nofollow">Hello</a>},
       link_to("Hello", "http://www.example.com", method: :post, rel: "example")
     )
+
+    assert_dom_equal(
+      %{<a href="http://www.example.com" data-method="post" rel="example nofollow">Hello</a>},
+      link_to("Hello", "http://www.example.com", method: :post, rel: :example)
+    )
   end
 
   def test_link_tag_using_post_javascript_and_confirm