Fix dirty tracking for `touch`

Before this fix, `touch` only clears dirty tracking for touched
attributes, doesn't track saved (touched) changes.

This fixes that tracks saved changes and carry over remaining changes.

Fixes #33429.
Closes #34306.

1 files changed, 24 insertions, 0 deletions

diff --git a/activerecord/lib/active_record/attribute_methods/dirty.rb b/activerecord/lib/active_record/attribute_methods/dirty.rb
index 920a7b2038..68ac8475b0 100644
--- a/activerecord/lib/active_record/attribute_methods/dirty.rb
+++ b/activerecord/lib/active_record/attribute_methods/dirty.rb
@@ -166,6 +166,30 @@ module ActiveRecord
           result
         end
 
+        def _touch_row(attribute_names, time)
+          @_touch_attr_names = Set.new(attribute_names)
+
+          affected_rows = super
+
+          changes = {}
+          @attributes.keys.each do |attr_name|
+            next if @_touch_attr_names.include?(attr_name)
+
+            if attribute_changed?(attr_name)
+              changes[attr_name] = _read_attribute(attr_name)
+              _write_attribute(attr_name, attribute_was(attr_name))
+              clear_attribute_change(attr_name)
+            end
+          end
+
+          changes_applied
+          changes.each { |attr_name, value| _write_attribute(attr_name, value) }
+
+          affected_rows
+        ensure
+          @_touch_attr_names = nil
+        end
+
         def _update_record(attribute_names = attribute_names_for_partial_writes)
           affected_rows = super
           changes_applied