Use the host_name field to determine which conference to assign

app/controllers/application_controller.rb

@@ -12,7 +12,6 @@ class ApplicationController < ActionController::Base
   #layout Proc.new { |controller| controller.request.host }
   layout 'public/application'
 
-
   def self.default_url_options(options={})
     if I18n.locale != I18n.default_locale
       options.merge({locale: I18n.locale})

app/controllers/public/application_controller.rb

@@ -2,5 +2,9 @@ module Public
   class ApplicationController < ::ApplicationController
     include ::CurrentConferenceAssigning
     before_filter :require_current_conference!
+
+    def current_conference
+      @current_conference ||= Conference.order(created_at: :desc).find_by(host_name: request.host)
+    end
   end
 end

config/routes.rb

@@ -1,7 +1,7 @@
 Rails.application.routes.draw do
   devise_for :users
 
-  scope module: :public, constraints: {subdomain: 'cfp'}, conference_id: 1 do
+  scope module: :public do
     root to: 'home#index'
     resource :personal_profile, path: 'profile'
     resources :events