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-rw-r--r--activerecord/lib/active_record/reflection.rb3
1 files changed, 2 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/reflection.rb b/activerecord/lib/active_record/reflection.rb
index a3f8bfd1f1..9e32b69786 100644
--- a/activerecord/lib/active_record/reflection.rb
+++ b/activerecord/lib/active_record/reflection.rb
@@ -34,7 +34,8 @@ module ActiveRecord
def self.add_reflection(ar, name, reflection)
ar.clear_reflections_cache
- ar._reflections = ar._reflections.merge(name.to_s => reflection)
+ name = name.to_s
+ ar._reflections = ar._reflections.except(name).merge!(name => reflection)
end
def self.add_aggregate_reflection(ar, name, reflection)