Multitenant Application (Subdomain)

gistfile1.rb

class ApplicationController < ActionController::Base
  before_filter :set_current_account

  private
    def set_current_account
      @current_account =
        Account.find_by_subdomain(request.subdomains.last)
    end
end

class CustomersController < ApplicationController
  def index
    @customers = @current_account.customers
  end
end