Select tag in rails form to disply selected value OR accessing Table value in form object

= f.select :traveler_id

  ,options_for_select( 

                  @individual_trips.map{|d| [d.individual.full_name,d.individual_id]}

                 ,f.object.traveler_id

                )

OR

Accessing Values by form object 

f.object.id

f.object.name