How to call one endpoint from another modules?

[micfan]

API SDL interface feature is required for method calling cross API class. The discuss was posted Grape Google Group. The result may be:

Class Twitter < Grape::API
  params do
    ...
  end
  interface :my_method do 
    return a+b
  end
end

Now the call can by the below, but env is not easy constructed :-(

# ret is an Array
ret = Twitter::API.endpoints[0].call(env)

[qd3v]

+ looking for such feature too, in Rails it's easy as (Warden example):

manager.failure_app = lambda { |env| SessionsController.action(:new).call(env) }

[myxoh]

In the codebase of an app I work on we do:
APIRoot.call(env) where APIRoot is the endpoint in which everything is mounted. However, you can do this on every parent endpoint.

in our case

# config/routes.rb
RailsApp::Application.routes.draw do
  mount APIRoot => "/api"
end

# app/api/api_root.rb
class APIRoot < Grape::API
  mount OtherEndpoint
  ...
end

[micfan]

the mount is a good way the internal call, or we can use a middleware call self