Use binding.local_variable_get for `:for`

Simplifies the surrounding code outside `convert_value`.

Ref: https://github.com/rails/rails/pull/36758

1 files changed, 3 insertions, 5 deletions

diff --git a/activesupport/lib/active_support/hash_with_indifferent_access.rb b/activesupport/lib/active_support/hash_with_indifferent_access.rb
index bbb7c36382..e1d233e208 100644
--- a/activesupport/lib/active_support/hash_with_indifferent_access.rb
+++ b/activesupport/lib/active_support/hash_with_indifferent_access.rb
@@ -367,17 +367,15 @@ module ActiveSupport
         key.kind_of?(Symbol) ? key.to_s : key
       end
 
-      EMPTY_HASH = {}.freeze
-
-      def convert_value(value, options = EMPTY_HASH) # :doc:
+      def convert_value(value, for: nil) # :doc:
         if value.is_a? Hash
-          if options[:for] == :to_hash
+          if binding.local_variable_get(:for) == :to_hash
             value.to_hash
           else
             value.nested_under_indifferent_access
           end
         elsif value.is_a?(Array)
-          if options[:for] != :assignment || value.frozen?
+          if binding.local_variable_get(:for) != :assignment || value.frozen?
             value = value.dup
           end
           value.map! { |e| convert_value(e, options) }