Multi tenant/lang application with Ruby on Rails
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This document describes how to build a multi-tenant Rails application that can handle multiple domains and languages. It introduces a Website model to store domain and language configuration and a WebsiteSwitcher middleware that sets the current website based on the domain. The middleware initializes a WebsiteSwitcher using the request host, finds the corresponding Website, and sets it as the current website along with its language before the request is passed to the application. This allows a single Rails app to serve different content and languages depending on the domain or host.
![Website
domain
lang
class 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">](https://image.slidesharecdn.com/multi-tenant-140304161755-phpapp01/85/Multi-tenant-lang-application-with-Ruby-on-Rails-5-320.jpg)
Multi tenant/lang application with Ruby on Rails
- 1. Multi tenant/lang application Simon Courtois - @happynoff
- 5. Website domain lang class 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">
- 7. switcher class 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!
- 9. middleware 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
- 10. APP ✔ middleware middleware ✔ switcher ✔ Website
- 11. require 'middlewares/website_switcher_middleware' ! APP module AwesomeApp class Application < Rails::Application # ... ! config.middleware.use WebsiteSwitcherMiddleware end end
- 12. ✔ APP APP ✔ middleware ✔ switcher ✔ Website
- 13. Questions ?
- 14. Thank you Simon Courtois - @happynoff