Allow nested attribute names to be passed as symbols (e.g. :'pet.name') as well.
Allow nested attribute names to be passed as symbols (e.g. :'pet.name') as well.

ahe/2dc_jqgrid,mstate/2dc_jqgrid,ahe/2dc_jqgrid,pdf/2dc_jqgrid,springbok/jqgrid-rails3,kritik/2dc_jqgrid_rails3,springbok/jqgrid-rails3,mstate/2dc_jqgrid,kritik/2dc_jqgrid_rails3,pdf/2dc_jqgrid