playframework - Slick orm for scala how can I retrieve a database column value -

i new slick orm using version 3.1.1 , in examples plain sql did not see how can retrieve value of database column http://slick.typesafe.com/doc/3.1.1/sql.html . simple example

 def listfollowing() = action.async {      val selectq=sql"""select model,id carsdb id=17""".as[(string,int)]    // value of model , put in var    // var model= model     database.run(selectq).map {finished=>      // value of model , put in var    // var model= model            ok(finished.tostring())      }   } 

how can value of column model so put in var or val ?

when do: database.run(selectq).map {finished=> ... } finished vector[(string,int)]. if sure returns 1 row (because of "... id=17") can take headoption() , check if there value in (it none if there no record id 17) , if there -> return else return error. code this:

def listfollowing() = action.async {     val selectq = sql"""select model,id carsdb id=17""".as[(string, int)]     db.run(selectq).map { finished =>          finished.headoption match {             case s: (string, int) => ok(s._1)             case none => ok("no car found requested id")         }     } }