I try to reproduce the “Context” example in the phoenix guide. But instead of defining authenticate_user in the router.ex file, I did it in another module called SessionAuth under the web directory which imports only Plug.Conn with a few aliases MyApp.Router.Helpers, Phoenix.Controller and MyApp.Accounts.
in the router:
scope "/cms", MyAppWeb.CMS, as: :cms do
pipe_through [:browser, &MyApp.SessionAuth.authenticate_user/2]
resources "/pages", PageController
end
There is possibly a way to it how you’ve described though. I’m not sure what the recommended way would be, but I prefer putting the plug it it’s own module.
I think the issue you’re having is that pipe_through accepts a list of pipelines, so you aren’t able to pass it a function directly.
The module of this authenticate_user function plug already contains a module plug, which add the current_user from the session to the Conn.assigns.
By the way, how should be named this kind of modules?
They aren’t controller because they don’t send any json or http response, they look like middleware of the web directory.