Build API using Grape

-- Coding Demo --

Without Rails

Alongside Rails

Alongside Rails

• Install
  
• Structure
• Autoload path
• Routes
• Swagger

Install

gem 'grape'

bundle install

Structure

1. app/api
2. folder == endpoint
3. 1 main api class
4. mount all apis into main api class

Autoload

config.paths.add File.join('app', 'api'), glob: File.join('**', '*.rb')
config.autoload_paths += Dir[Rails.root.join('app', 'api', '*')]

Routes

1. Mount main api class only. example : mount Hotelet::API => '/'
2. Rake task for grape routes

Swagger

documenting all your api !

1. Install swagger
2. Install grape-swagger-ui
3. Add swagger helper (initialize)

Without Rails

• Add Gemfile rack and grape
• Using config.ru
• 1 main api class
• moduling api classes (require all files)

Gemfile

source 'https://rubygems.org'

gem 'rack'
gem 'grape'

config.ru

1. require main api : require File.expand_path('api', File.dirname(__FILE__))
2. run

Main API

1. require grape
2. require all apis
3. mount all apis in main api

Homework

what if I want to use activerecord + grape without using rails ?