modify for pass the test

ticket_params[:tag_ids].split(",")
$B"-(B
ticket_params[:tag_ids].to_s.split(",")
$BCf?H$,(Bnil$B$N$H$-$K(Bsplit$B$9$k$HE\$i$l$F$7$^$&$N$G0lC6J8;zNs$KJQ49$7$F$+$i(Bsplit$B$9$k$h$&$K$7$F$_$^$7$?!#(B