Add Heroku deployment support

config/environments/production.rb

@@ -45,10 +45,20 @@ Rails.application.configure do
   # Use a different logger for distributed setups.
   # config.logger = ActiveSupport::TaggedLogging.new(SyslogLogger.new)
 
+  # Parse and split the REDIS_URL if passed (used with hosting platforms such as Heroku).
+  # Set ENV variables because they are used elsewhere.
+  if ENV['REDIS_URL']
+    redis_url = URI.parse(ENV['REDIS_URL'])
+    ENV['REDIS_HOST'] = redis_url.host
+    ENV['REDIS_PORT'] = redis_url.port.to_s
+    ENV['REDIS_PASSWORD'] = redis_url.password
+  end
+
   # Use a different cache store in production.
   config.cache_store = :redis_store, {
     host: ENV.fetch('REDIS_HOST') { 'localhost' },
     port: ENV.fetch('REDIS_PORT') { 6379 },
+    password: ENV.fetch('REDIS_PASSWORD') { false },
     db: 0,
     namespace: 'cache',
     expires_in: 20.minutes
@@ -85,7 +95,7 @@ Rails.application.configure do
     :address        => ENV['SMTP_SERVER'],
     :user_name      => ENV['SMTP_LOGIN'],
     :password       => ENV['SMTP_PASSWORD'],
-    :domain         => config.x.local_domain,
+    :domain         => ENV['SMTP_DOMAIN'] || config.x.local_domain,
     :authentication => :plain,
   }