playframework - Scala Play 2.4.x controller class chaining? -


i'm using play-slick-3.0 project base migrating legacy play project have. legacy controller.application used object , class, likewise other controller implementations objects , classes. legacy project doing "controller chaining" i.e. application delegates other controllers: 

class application extends controller { ...   def uploaddo(context: string) = { implicit request ⇒      // lot of boilerplate code common contexts     context match {       case "aum" ⇒ aumcontroller.uploaddo(storedfile)       case "portfolio" ⇒ portfoliocontroller.uploaddo(storedfile)       case "price" ⇒ pricecontroller.uploaddo(storedfile)     }     // more boilerplate code common contexts   } }

the problem can no longer kind of delegation because aumcontroller class , not object anymore. can't define associated object because these classes instantiated , dependencies injected framework ... see instance application.scala in same project, not possible instantiate directly.

how can fix/migrate delegation issue above?

you can make use of reverse routing strategy 

  class application extends controller {    ...    def uploaddo(context: string) = { implicit request ⇒      // lot of boilerplate code common contexts     context match {       case "aum" ⇒ routes.aumcontroller.uploaddo(storedfile)       case "portfolio" ⇒ routes.portfoliocontroller.uploaddo(storedfile)       case "price" ⇒ routespricecontroller.uploaddo(storedfile)     }     // more boilerplate code common contexts   } }

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