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-rw-r--r--activerecord/lib/active_record/attribute_methods/primary_key.rb7
1 files changed, 4 insertions, 3 deletions
diff --git a/activerecord/lib/active_record/attribute_methods/primary_key.rb b/activerecord/lib/active_record/attribute_methods/primary_key.rb
index cb550b0683..1c81a5b71b 100644
--- a/activerecord/lib/active_record/attribute_methods/primary_key.rb
+++ b/activerecord/lib/active_record/attribute_methods/primary_key.rb
@@ -15,9 +15,10 @@ module ActiveRecord
# Returns the primary key value.
def id
- return unless self.class.primary_key
- sync_with_transaction_state
- read_attribute(self.class.primary_key)
+ if pk = self.class.primary_key
+ sync_with_transaction_state
+ read_attribute(pk)
+ end
end
# Sets the primary key value.