How to connect redis cloud on heroku?

Question

Ruby on Rails

I don't understand how to connect redis to heroku.
I added the redis cloud addon to the application, added the following to redis.rb:

if ENV["REDISCLOUD_URL"]
  $redis = Redis.new(:url => ENV["REDISCLOUD_URL"])
else
  $redis = Redis.new(:host => 'localhost', :port => 6379)
end

Besides that, is there anything else I need to write? REDISCLOUD_URL explicitly set somewhere? In the console, when trying to interact with the database, it displays:

Errno::ECONNREFUSED: Connection refused - Unable to connect to Redis on 127.0.0.1:6379

Answer 1

heroku login
heroku addons:add openredis
in project folder

Answer 2

heroku config
Do it first and see if that ENV variable is there. Are you trying to connect to localhost?