Feature Request: Middleware Handling

[mathvav]

I know that this has traditionally been a task of something like Negroni or Martini, but I think it's a good idea to instead handle it in the mux layer.

For example, say I create a subrouter like this:

r := mux.NewRouter()
r.HandleFunc("/", IndexHandler)
s := r.PathPrefix("/client-data").Subrouter()
s.HandleFunc("/", ClientDataHandler)

Life is good. If I need a piece of middleware for Gzip, I can add that to Negroni. However, let's say that I need to use an authentication middleware for anything beginning with "/client-data," I need to explicitly call a function in every handler.

It'd be really nice to just be able to pop a piece of middleware onto the subrouter. Is this type of thing beyond the scope of the project? Is there another way for this that I am missing?

[mathvav]

Sorry, didn't realize the is-open flag was the default on GitHub and didn't notice #36. However, I don't understand why you don't want this... API complexity is understandable, but I think that this would be really helpful.

The "opinionated" argument doesn't really stand since you don't have to use the middleware. Plus, there's no way to integrate anything into a subrouter, so it's painful to "implement it elsewhere."