How to call one endpoint from another modules?

[Michael Fan]

The same question like Call request inside other request. Maybe like:

require './twitter'

module MyWebsite
  class SomeResource < Grape::API
    resources :user do
      post do
        # some code here
        Twitter::API.endpoint['some_namespace'].call(POST, params)
      end
    end
  end
end

Is there a better way do this expect for moving the common used logic code to one independent file or using a RestClient make a HTTP Request outside?

[Daniel Doubrovkine]

There's currently no better way. You should probably refactor the common code out. For an API the "correct" way would be to do a 302 redirect if the result is supposed to be the same, but then there's POST and not all (none?) clients will POST on a redirect.

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[Michael Fan]

Daniel, thank you. 302 redirect is not a solution. If we use 302 for internal calling, we have to consume 302 twice, direct into and then back...

I wish there is one approach to make DSL calling. What does the 'get/post/delete' DSL do with his class object?

I want to use the module mechanism of Ruby language first, this may work:

## File: twitter.rb
module Twitter
  class API < Grape::API
    def self.some_method(a, b)
      return a + b
    end
  end
end

## File: my_website.rb

require './twitter'

module MyWebsite
  class SomeResource < Grape::API
    resources :user do
      post do

        Twitter::API.some_method(params[:a], params[:b])
      end
    end
  end
end

在 2016年1月19日星期二 UTC+8下午8:49:04，Daniel Doubrovkine写道：

There's currently no better way. You should probably refactor the common code out. For an API the "correct" way would be to do a 302 redirect if the result is supposed to be the same, but then there's POST and not all (none?) clients will POST on a redirect.

On Tuesday, January 19, 2016, Michael Fan <fanli...@gmail.com> wrote:

The same question like Call request inside other request. Maybe like:

require './twitter'

module MyWebsite
  class SomeResource < Grape::API
    resources :user do
      post do
        # some code here
        Twitter::API.endpoint['some_namespace'].call(POST, params)
      end
    end
  end
end

Is there a better way do this expect for moving the common used logic code to one independent file or using a RestClient make a HTTP Request outside?

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[Daniel Doubrovkine]

Modules definitely will work. The construction of the actual endpoint involves duplicating some things, so you have to be careful with variables inside these methods, otherwise it's just Ruby.

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[Michael Fan]

I debugged the Twitter::API, but the method `self.some_method()` does not exist at all. The Grape DSL trick with method delegate, instance variable @endpoints is Array type and there is no getter function to easily access by routes/namespace.

I opened a issue at https://github.com/ruby-grape/grape/issues/1250

在 2016年1月19日星期二 UTC+8下午11:05:35，Daniel Doubrovkine写道：

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