For serving CORS headers in responses.

CorsSupport.scala

import play.api.mvc._

trait CorsSupport { self: Controller =>

  def CorsAction(cb: => Result): Action[AnyContent] =
    Action(cb.withHeaders(actionCorsHeaders: _*))

  def CorsAction(cb: Request[AnyContent] => Result): Action[AnyContent] =
    Action { request =>
      cb(request).withHeaders(actionCorsHeaders: _*)
    }

  def CorsAction[A](bp: BodyParser[A])(f: Request[A] => Result): Action[A] =
    Action(bp) { request =>
      f(request).withHeaders(actionCorsHeaders: _*)
    }

  private[this] val actionCorsHeaders = Array(
    "Access-Control-Allow-Methods" -> "GET, POST, OPTIONS, HEAD, PUT, DELETE",
    "Access-Control-Allow-Credentials" -> "true",
    "Access-Control-Allow-Headers" -> "ORIGIN, CONTENT-TYPE, X-REQUESTED-WITH, *",
    "Access-Control-Allow-Origin" -> "*",
    "Access-Control-Max-Age" -> "30000"
  )
}