Setting Rails Grape API

Grape is a REST-like API framework for Ruby. It’s designed to run on Rack or complement existing web application frameworks such as Rails and Sinatra by providing a simple DSL to easily develop RESTful APIs.

Setting project with grape

Adding necessary gems for grape :-

gem 'grape', '~> 1.0', '>= 1.0.3'
gem 'grape-swagger', '~> 0.30.1'
gem 'grape-swagger-rails', '~> 0.3.0'
gem 'rack-cors', :require=>'rack/cors'

ruby-grape/grape

ruby-grape/grape-swagger

ruby-grape/grape-swagger-rails

cyu/rack-cors

Configuration files

• config/application.rb:

config.middleware.insert_before 0, Rack::Cors do
  allow do
    origins '*'
    resource '*', :headers=>:any, :methods=>[:get, :post, :delete, :options]
  end
end

• config/initializers/inflections.rb

ActiveSupport::Inflector.inflections(:en) do |inflect|
  inflect.acronym 'API'
end

• config/routes.rb

Rails.application.routes.draw do
  mount VersioningGrape::API => '/api'
  mount GrapeSwaggerRails::Engine => '/swagger'
end

for rails 6

• app/assets/config/manifest.js :- Adding following lines of code.

//= link grape_swagger_rails/application.css
//= link grape_swagger_rails/application.js