Saves any new associated records, or all loaded autosave associations if :autosave is enabled on the association.
In addition, it destroys all children that were marked for destruction with mark_for_destruction.
# File activerecord/lib/active_record/autosave_association.rb, line 279 def save_collection_association(reflection) if association = association_instance_get(reflection.name) autosave = reflection.options[:autosave] if records = associated_records_to_validate_or_save(association, @new_record_before_save, autosave) records.each do |record| if autosave && record.marked_for_destruction? association.destroy(record) elsif @new_record_before_save || record.new_record? if autosave association.send(:insert_record, record, false, false) else association.send(:insert_record, record) end elsif autosave record.save(false) end end end # reconstruct the SQL queries now that we know the owner's id association.send(:construct_sql) if association.respond_to?(:construct_sql) end end