Fix methods in generated routes to use brackets for empty parameter list

[mkurz]

Methods called like

HomeController_1.index

need to be called like

HomeController_1.index()

instead.

See

• https://discuss.lightbend.com/t/running-play-on-the-dotty-compiler/6767
• Generated reverse route method should have empty parentheses () depending on routes file #10363
• Deprecate auto-application of (non-Java-defined) methods with a single empty parameter list scala/scala#8833
• https://github.com/scala/scala/releases/tag/v2.13.3

[mkurz]

Actually, there is no bug in Play...
If you run in this problem make sure the route defined in conf/routes matches the action method.

E.g. if you have in your routes file:

GET     /                           controllers.HomeController.index

then the action method also should not have parentheses:

def index = Action {...

The other way round it works as well, you have to add parentheses to both:

GET     /                           controllers.HomeController.index()

def index() = Action {...

Right now the play-scala seed project is "broken", I fixed that: playframework/play-scala-seed.g8#149