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-rw-r--r--activerecord/lib/active_record/locking/optimistic.rb6
1 files changed, 4 insertions, 2 deletions
diff --git a/activerecord/lib/active_record/locking/optimistic.rb b/activerecord/lib/active_record/locking/optimistic.rb
index c0e1dda2bd..e5065de7fb 100644
--- a/activerecord/lib/active_record/locking/optimistic.rb
+++ b/activerecord/lib/active_record/locking/optimistic.rb
@@ -87,11 +87,13 @@ module ActiveRecord
begin
relation = self.class.unscoped
- affected_rows = relation.where(
+ stmt = relation.where(
relation.table[self.class.primary_key].eq(quoted_id).and(
relation.table[lock_col].eq(quote_value(previous_value))
)
- ).arel.update(arel_attributes_values(false, false, attribute_names))
+ ).arel.compile_update(arel_attributes_values(false, false, attribute_names))
+
+ affected_rows = connection.update stmt.to_sql
unless affected_rows == 1
raise ActiveRecord::StaleObjectError, "Attempted to update a stale object: #{self.class.name}"