scala - why the "===" operation do not work on "filter" or "where" do not apply on my TableQuery [slick2] -


i use slick 2.0.2 , scala, datamodel is:

  case class aditem(id:option[long], res:string,status:string,userid:string, head:string,summary:string, url:string, position:string) class advertisement(tag:tag) extends table[aditem](tag, "advertisement"){   def id=column[long]("id", o.primarykey, o.autoinc)   def res=column[string]("resource")   def status=column[string]("status")   def userid=column[string]("user")   def head=column[string]("head")   def summary=column[string]("summary")   def url=column[string]("ad_link")   def position=column[string]("position")   def * = (id.?, res, status, userid,  head, summary, url, position)<>(aditem.tupled, aditem.unapply)   def userfk=foreignkey("ad_use_fk", userid, userdata)(_.id) }

this tablequery:

val addata=tablequery[advertisement]

when execute the:

val idd="1232232" addata.filter(_.id === idd.tolong)

i error is:

[error] g:\testprojects\slickplay\app\controllers\adcontroller.scala:30: value = == not member of scala.slick.lifted.column[long] [error]       addata.filter(_.id === idd.tolong)

i follow instruction of http://slick.typesafe.com/doc/2.0.2/queries.html#sorting-and-filtering

i think "===" can apply column[long]

you have import proper implicit conversions:

import scala.slick.driver.jdbcdriver.simple._

or

import scala.slick.driver.thedriverofmychoice.simple._

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