Routing Scope and Through parameters to routes.

[eliasjpr]

Routing Scope and Through parameters to routes.

Issue: Routing Scopes [ch40]

Requirements

Scopes are a way to group routes under a common path prefix and scoped
set of plug middleware. We might want to do this for admin
functionality, APIs, and especially for versioned APIs. Let's say we
have user generated reviews on a site, and that those reviews first need
to be approved by an admin. The semantics of these resources are quite
different, and they might not share the same controller. Scopes enable
us to segregate these routes.

Description of the Change

Overloaded the router.draw method to receive a valve and through
attributes. With these 2 attributes routes can now be defined as follow.

routes :web, "/v2" do
    get "/hello", HelloController, :index
    get "/hello/:planet", HelloController, :world
    get "/hello/template", HelloController, :template
end

Why Should This Be In Core?

• This allows defining scopes for routes which are important for APIs versioning
• Allows for a cleaner definition for routes.

Benefits

• No longer have to append the pipeline at the end of the route definition. get "/hello", HelloController, :index, :web
• When serving static files the scope follows a folder path for instance

[elorest]

Looks good. Sorry it took so long.

[fridgerator]

looks good