Fix issue with `button_to`'s `to_form_params`

`button_to` was throwing exception when invoked with `params` hash that
contains symbol and string keys. The reason for the exception was that
`to_form_params` was comparing the given symbol and string keys.

The issue is fixed by turning all keys to strings inside
`to_form_params` before comparing them.

1 files changed, 2 insertions, 2 deletions

diff --git a/actionview/lib/action_view/helpers/url_helper.rb b/actionview/lib/action_view/helpers/url_helper.rb
index cae62f2312..52bffaab84 100644
--- a/actionview/lib/action_view/helpers/url_helper.rb
+++ b/actionview/lib/action_view/helpers/url_helper.rb
@@ -634,7 +634,7 @@ module ActionView
         # suitable for use as the names and values of form input fields:
         #
         #   to_form_params(name: 'David', nationality: 'Danish')
-        #   # => [{name: :name, value: 'David'}, {name: 'nationality', value: 'Danish'}]
+        #   # => [{name: 'name', value: 'David'}, {name: 'nationality', value: 'Danish'}]
         #
         #   to_form_params(country: { name: 'Denmark' })
         #   # => [{name: 'country[name]', value: 'Denmark'}]
@@ -666,7 +666,7 @@ module ActionView
               params.push(*to_form_params(value, array_prefix))
             end
           else
-            params << { name: namespace, value: attribute.to_param }
+            params << { name: namespace.to_s, value: attribute.to_param }
           end
 
           params.sort_by { |pair| pair[:name] }