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-rw-r--r--activerecord/lib/active_record/attribute_methods/primary_key.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/attribute_methods/primary_key.rb b/activerecord/lib/active_record/attribute_methods/primary_key.rb
index 383448c94a..aa6704d5c9 100644
--- a/activerecord/lib/active_record/attribute_methods/primary_key.rb
+++ b/activerecord/lib/active_record/attribute_methods/primary_key.rb
@@ -18,7 +18,7 @@ module ActiveRecord
# Sets the primary key value
def id=(value)
- write_attribute(self.class.primary_key, value)
+ write_attribute(self.class.primary_key, value) if self.class.primary_key
end
# Queries the primary key value