Routes and subpackages in controllers

问题:

I'm using Play 2.1 and I'm having some odd problems.

I have a subpackage messages in the controllers package with a class i18n.java.

My routes file looks like this:

GET     \    controllers.messages.i18n.index()
POST    \    controllers.messages.i18n.process()

I now have a form with the following action:

@helper.form(action = routes.messages.i18n.process())

but this gives me an error:

value messages is not a member of object controllers.routes

I've used subpackages before in Play 2.0.4 and it worked fine like that, can anyone spot any errors in my configuration?

The routes file doesn't complain that it can't find the controller.

回答1:

The route should be controllers.messages.routes.i18n.process(). You can inspect the target/scala-2.10/src_managed directory to discover generated files.

And for information, Java coding conventions say that a class must start with an uppercase.

回答2:

FYI, in 2.2 it's slightly different.

routes.conf looks like:

GET  /admin/stuff  controllers.admin.StuffController.show()

in code looks like:

controllers.admin.routes.StuffController.show()

回答3:

For Play 2.4.6 Java users:

Let's say your controller (Application) and action (logout) is com.stackoverflow.play.Application.logout().

To use it in your template (*.scala.html), you do @com.stackoverflow.play.routes.Application.logout (e.g., <a href="@com.stackoverflow.play.routes.Application.logout()">, <form action="@com.stackoverflow.play.routes.Application.logout()" method="post">).

Read the bottom part of this link: https://playframework.com/documentation/2.4.x/JavaRouting