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-rw-r--r--activerecord/lib/active_record/attribute_methods/primary_key.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/attribute_methods/primary_key.rb b/activerecord/lib/active_record/attribute_methods/primary_key.rb
index 978cd7fbe3..fcdd31ddea 100644
--- a/activerecord/lib/active_record/attribute_methods/primary_key.rb
+++ b/activerecord/lib/active_record/attribute_methods/primary_key.rb
@@ -56,6 +56,7 @@ module ActiveRecord
@primary_key ||= ''
self.original_primary_key = @primary_key
value &&= value.to_s
+ connection_pool.primary_keys[table_name] = value
self.primary_key = block_given? ? instance_eval(&block) : value
end
end