ActiveSlick query compilation error - scala

Question

What is wrong with this ActiveSlick query?
import io.strongtyped.active.slick.ActiveSlick
import io.strongtyped.active.slick.models.Identifiable
import scala.slick.driver._
import scala.slick.driver.JdbcProfile._
trait MappingActiveSlickIdentifiable {
this: ActiveSlick =>
import jdbcDriver.simple._
case class Foo(name: String, id: Option[Int] = None) extends Identifiable[Foo] {
override type Id = Int
override def withId(id: Id): Foo = copy(id = Some(id))
}
class FooTable(tag: Tag) extends EntityTable[Foo](tag, "FOOS") {
def name = column[String]("NAME")
def id = column[Int]("ID", O.PrimaryKey, O.AutoInc)
def * = (name, id.?) <> (Foo.tupled, Foo.unapply)
}
val Foos = new EntityTableQuery[Foo, FooTable](tag => new FooTable(tag))
}
object MappingActiveSlickIdentifiable {
class Components(override val jdbcDriver: JdbcDriver)
extends ActiveSlick
with MappingActiveSlickIdentifiable {
import jdbcDriver.simple._
val db = Database.forURL("jdbc:h2:mem:active-slick", driver = "org.h2.Driver")
def createSchema(implicit s:Session): Unit = {
Foos.ddl.create
}
}
object Components {
val instance = new Components(H2Driver)
}
import Components.instance._
def main(args:Array[String]) : Unit = {
db.withTransaction { implicit s =>
createSchema
(1 to 3) foreach { i =>
val foo = Foo(s"foo $i")
val fooWithId : Foo = Foos.save(foo)
Foos.update(fooWithId.copy(name = "?"))
println(s"Foo: $foo, foo with id: $fooWithId")
assert(fooWithId.id.isDefined, "Foo's ID should be defined")
}
val q = for {
f <- Foos if f.name === "?"
} yield f.name
}
}
}
The error:
[error] /Volumes/Home/s/hello/slick-active/hw.scala:57: value === is not a member of scala.slick.lifted.Column[String]
[error] f <- Foos if f.name === "?"

Answer 1

You should NOT import there
import scala.slick.driver._
import scala.slick.driver.JdbcProfile._
import from a particular driver instead, e.g.
import scala.slick.driver.H2Driver._