Grape is an API framework that provides a simple and consistent way to build APIs for Ruby applications. It allows developers to easily create REST-like APIs by defining endpoints and parameters within classes. Grape supports features like API versioning, parameter validation, multiple file structures, and endpoint documentation.

1. APIs

2. Rails

3. Don’t really
fit together.

4. Sinatra

5. mmm tasty...

6. But I’m good
programmer...
http://threevirtues.com/ (1)

7. Enter...

8. Grape
0.2.0!!!

9. Why@?#$%!

10. Simple...
class API < Grape::API
get :users do
# omitted for awesomeness
end
end

11. Versions...
class API < Grape::API
version “v1”
get :users do
# omitted for awesomeness
end
end

12. Helpers...
class API < Grape::API
helpers do
def current_user
User.find params[:id]
end
end
# omitted for awesomeness
end

13. Multi-file...
class API < Grape::API
version “v1”
mount API_v1
# omitted for awesomeness
end

14. Describing...
class API < Grape::API
desc "Returns users", {params:{id: {}}}
get :users do
# omitted for awesomeness
end
end

15. Demo...