This method is only available on newer versions. The first available version (v7.2.3) is shown here.
touch_all(...)
Touches records in batches. Returns the total number of rows affected.
Person.in_batches.touch_all
See Relation#touch_all for details of how each batch is touched.
# File activerecord/lib/active_record/relation/batches/batch_enumerator.rb, line 85 def touch_all(...) sum do |relation| relation.touch_all(...) end end