Fixed language detection for our preview environment

app/controllers/application_controller.rb

@@ -7,10 +7,6 @@ class ApplicationController < LinguaFrancaApplicationController
 	# Prevent CSRF attacks by raising an exception.
 	# For APIs, you may want to use :null_session instead.
 	protect_from_forgery with: :exception
-	
-	#if ENV['RAILS_ENV'] || 'production'
-	#	force_ssl only: :success
-	#end
 
 	before_filter :capture_page_info
 
@@ -21,12 +17,22 @@ class ApplicationController < LinguaFrancaApplicationController
 		#u = User.find_by_email('goodgodwin@hotmail.com')
 		#auto_login(u)
 		#logout()
+
+		# set the translator to the current user if we're logged in
 		I18n.config.translator = current_user
+
+		# get the current confernece and set it globally
 		@conference = Conference.order("start_date DESC").first
+
+		# add some style sheets
 		@stylesheets ||= Array.new
+		# add the translations stylesheet if translating
 		@stylesheets << params[:controller] if params[:controller] == 'translations'
 
 		ActionMailer::Base.default_url_options = {:host => "#{request.protocol}#{request.host_with_port}"}
+
+		# call the base method to detect the language
+		super
 	end
 
 	def home

app/views/layouts/application.html.haml

@@ -7,7 +7,7 @@
 		%meta{ name: 'description', content: (yield_or_default :description, I18n.t('page_descriptions.home')) }
 		= csrf_meta_tags
 		= inject_css!
-		- @stylesheets.each do |css|
+		- (@stylesheets || []).each do |css|
 			= inject_css! css
 		%link{ href: asset_path('favicon.ico'), rel: 'shortcut icon', type: 'image/x-icon' }
 		%link{ href: asset_path('favicon.ico'), rel: 'icon', type: 'image/x-icon' }

config/application.rb

@@ -28,5 +28,10 @@ module BikeBike
 		config.i18n.enforce_available_locales = false
 		self.paths['config/database'] = Rails.root.join('config', 'database.yml')
 		config.active_record.raise_in_transactional_callbacks = true
+
+		# detect the language using the subdimain
+		I18n.config.language_detection_method = I18n::Config::DETECT_LANGUAGE_FROM_SUBDOMAIN
+		# if we are in our preview environment, set the locale regex to detect the preview- prefix
+		I18n.config.host_locale_regex = /^preview\-([a-z]{2})\.bikebike\.org$/ if Rails.env == 'preview'
 	end
 end