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-rw-r--r--activerecord/lib/active_record/core.rb3
1 files changed, 1 insertions, 2 deletions
diff --git a/activerecord/lib/active_record/core.rb b/activerecord/lib/active_record/core.rb
index 224112b559..30b8485c8b 100644
--- a/activerecord/lib/active_record/core.rb
+++ b/activerecord/lib/active_record/core.rb
@@ -315,9 +315,8 @@ module ActiveRecord
##
def initialize_dup(other) # :nodoc:
- pk = self.class.primary_key
@attributes = @attributes.dup
- @attributes.write_from_database(pk, nil)
+ @attributes.reset(self.class.primary_key)
run_callbacks(:initialize) unless _initialize_callbacks.empty?