ScalaInterceptors

Intercepting requests

Overriding onRouteRequest

One another important aspect of the Global object is that it provides a way to intercept requests and execute some business logic before a request is being dispatched to an Action.

Tip: this hook can be also used for hijacking requests, allowing developers to plugin their own request routing mechanism.

Let's see how this works in practice:

import play.api._

//notice: this is in the default package
object Global extends GlobalSettings {

  def onRouteRequest(request: RequestHeader): Option[Handler] = {
     println("executed before every request:" + request.toString)
     super.onRouteRequest(request)
  }

}

Of course it's also possible to intercept only a specific method. This can be achieved via Actions composition

Next: Testing your application