Mount of another Grape API on a path doesn't work

[mbleigh]

A Grape API should be able to mount other Rack applications inside of it. In addition, it should be able to mount another API and that API will inherit the other API's settings.

class UsersAPI < Grape::API
  get '/:id' do
    # ...
  end
end

class MyAPI
  version :v1
  mount UsersAPI => '/users'
end

[dblock]

@mbleigh this is done, right?

[dblock]

The mounting works, but the RHS doesn't. So mounting on "/users" has no effect.

[dblock]

Fixing this looks complicated. Do we have to alter the paths of the mounted API? Here's a spec for this failure:

      it 'mounts on a path' do
        subject.namespace :cool do
          app = Class.new(Grape::API)
          app.get '/awesome' do
            "sauce"
          end
          mount app => '/mounted'
        end
        get "/mounted/cool/awesome"
        last_response.status.should == 200
        last_response.body.should == "sauce"
      end

[dblock]

I fixed this, finally, in 70a93a7. It's a bit dirty and in case of nested mounts you must mount outside-in. Maybe @mbleigh can come up with a more elegant fix.