Multi tenant/lang application with Ruby on Rails

Multi tenant/lang applicationSimon Courtois - @happynoff

Multi-tenant you say?

mywebsite.com

otherwebsite.com

and-another.com

APP

WebsiteAPP switchermiddleware

Websiteclass Website < ActiveRecord::Base def self.current Thread.current[:website] end ! def self.current=(website) Thread.current[:website] = website end end

Website.current = Website.first !Website.current # => #<Website domain=“mywebsite.com" lang="en">

domain lang

WebsiteAPP switcher ✔ Websitemiddleware

switcherclass WebsiteSwitcher attr_reader :domain, :host, :website ! def initialize(host) @host = host.downcase.chomp('.') end ! def domain @domain ||= ActionDispatch::Http::URL.extract_domain(host) end ! def website @website ||= Website.where(domain: domain).first || Website.where(domain: 'mywebsite.com') end ! def switch! Website.current = website I18n.locale = website.lang end end

WebsiteSwitcher.new('www.mywebsite.com').switch!

APP switcher✔ switcher ✔ Websitemiddleware

require 'website_switcher' !class WebsiteSwitcherMiddleware def initialize(app) @app = app end ! def call(env) request = Rack::Request.new(env) ! WebsiteSwitcher.new(request.host).switch! ! @app.call(env) end end

middleware

middlewareAPP ✔ switcher ✔ Website✔ middleware

APP

require 'middlewares/website_switcher_middleware' !module AwesomeApp class Application < Rails::Application # ... ! config.middleware.use WebsiteSwitcherMiddleware end end

APP ✔ switcher ✔ Website✔ middleware✔ APP

Questions?

Thank youSimon Courtois - @happynoff