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-rw-r--r--actionpack/lib/action_view/helpers/form_helper.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/actionpack/lib/action_view/helpers/form_helper.rb b/actionpack/lib/action_view/helpers/form_helper.rb
index fc2621ff01..afdda9cb27 100644
--- a/actionpack/lib/action_view/helpers/form_helper.rb
+++ b/actionpack/lib/action_view/helpers/form_helper.rb
@@ -175,7 +175,7 @@ module ActionView
options["type"] = "radio"
options["value"] = tag_value
options["checked"] = "checked" if value == tag_value
- pretty_tag_value = tag_value.gsub(/\s/, "_").gsub(/\W/, "").downcase
+ pretty_tag_value = tag_value.to_s.gsub(/\s/, "_").gsub(/\W/, "").downcase
options["id"] = @auto_index ?
"#{@object_name}_#{@auto_index}_#{@method_name}_#{pretty_tag_value}" :
"#{@object_name}_#{@method_name}_#{pretty_tag_value}"