1 files changed, 15 insertions, 3 deletions
diff --git a/activerecord/lib/active_record/persistence.rb b/activerecord/lib/active_record/persistence.rb
index a1e1073792..9bb45aa3b7 100644
--- a/activerecord/lib/active_record/persistence.rb
+++ b/activerecord/lib/active_record/persistence.rb
@@ -477,11 +477,23 @@ module ActiveRecord
           changes[column] = write_attribute(column, time)
         end
 
-        changes[self.class.locking_column] = increment_lock if locking_enabled?
-
         clear_attribute_changes(changes.keys)
         primary_key = self.class.primary_key
-        self.class.unscoped.where(primary_key => self[primary_key]).update_all(changes) == 1
+        scope = self.class.unscoped.where(primary_key => id)
+
+        if locking_enabled?
+          locking_column = self.class.locking_column
+          scope = scope.where(locking_column => _read_attribute(locking_column))
+          changes[locking_column] = increment_lock
+        end
+
+        result = scope.update_all(changes) == 1
+
+        if !result && locking_enabled?
+          raise ActiveRecord::StaleObjectError.new(self, "touch")
+        end
+
+        result
       else
         true
       end