CODEWITHSUNDEEP
scala
konkivo
konkivo

Reputation: 33

Scala value toInt is not a member of Option[String]

I am new with Scala and I can't figure this out. I am sure it is a simple solution but as a newbie I can't find it.

I have this code

val resID = CartManager.getReservation(request)
   val id = if (resID.isDefined && resID.get.status == "FOUND") resID.get.id.toInt else -1

and it gives me an error: 

value toInt is not a member of Option[String]

How can I get the id of the object Reservation if it is defined?

Thank you

Upvotes: 2

Views: 9226

Answers (2)

Ashalynd
Ashalynd

Reputation: 12563

That means your id is Option[String], and not String. Also, you can use a for-comprehension here.

   val id = ( for {
       resID <- CartManager.getReservation(request) if resID.status == "FOUND"
       theID <- resID.id 
      } yield theID.toInt ) getOrElse -1

Upvotes: 1

Michael Zajac
Michael Zajac

Reputation: 55569

A better functional way to accomplish what you're trying to do would be like this:

val id = CartManager.getReservation(request).filter(_.status == "FOUND").map(_.id.toInt).getOrElse(-1)

Use filter to filter down the contained Option value (if it exists), map to map the CartManager to an Option[Int], and getOrElse to extract the value from the Option with the default value -1 if the Option is empty.

Upvotes: 4

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