silverstripe/silverstripe-framework — pull request #2261 by micahsheets (2013-07-23 19:52:42+00:00)
Title: Updates so that CompositeField setID() works for adding a specified ID to the CompositeField_holder.ss template

Changes to both CompositeField.php and CompositeField_holder.ss are required to make the setID() function work. If there is going to be a setID() function ( and there should be ) then it should actually use the ID in the template. This is a required feature that many people have requested.