Controller methods & railtie

[eveadele]

I made a module for current_user and user_logged_in? methods, and added a railtie to include that module and the rack middleware.

[cqr]

this else clause should be redundant

[cqr]

Looks mostly good.

First, I don't think we can realistically define a current_user method because it's likely to be application dependent how that gets defined. I'd say the method we should define is prx_auth_token, which just returns the wrapper you have defined here.

Also, instead of user_logged_in, let's call it prx_authenticated? and we should add some tests

[cqr]

@eveadele Looks great to me.

@kookster did you have something else in mind for the controller stuff? I don't know that it makes sense to go much further than this (except maybe in the future doing things like automatically querying the /userinfo endpoint) since we don't know whether we'll have access to the users table or something like it.