How to handle optional query parameters in Play framework

Question

Lets say I have an already functioning Play 2.0 framework based application in Scala that serves a URL such as:

http://localhost:9000/birthdays

which respond

Answer 1

Encode your optional parameters as Option[String] (or Option[java.util.Date], but you’ll have to implement your own QueryStringBindable[Date]):

def birthdays(from: Option[String], to: Option[String]) = Action {
  // …
}

And declare the following route:

GET   /birthday       controllers.Application.birthday(from: Option[String], to: Option[String])