can [:show, :data], Trace if scope?(token, :read_gpx)
can [:create, :update, :destroy], Trace if scope?(token, :write_gpx)
can [:details], User if scope?(token, :read_prefs)
can [:show, :data], Trace if scope?(token, :read_gpx)
can [:create, :update, :destroy], Trace if scope?(token, :write_gpx)
can [:details], User if scope?(token, :read_prefs)