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-rw-r--r--activerecord/lib/active_record/inheritance.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/inheritance.rb b/activerecord/lib/active_record/inheritance.rb
index fbdaeaae51..236a65eba7 100644
--- a/activerecord/lib/active_record/inheritance.rb
+++ b/activerecord/lib/active_record/inheritance.rb
@@ -217,7 +217,7 @@ module ActiveRecord
def subclass_from_attributes(attrs)
attrs = attrs.to_h if attrs.respond_to?(:permitted?)
if attrs.is_a?(Hash)
- subclass_name = attrs.with_indifferent_access[inheritance_column]
+ subclass_name = attrs[inheritance_column] || attrs[inheritance_column.to_sym]
if subclass_name.present?
find_sti_class(subclass_name)