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copied!<p>First the predispositions, i like to have my heroku git remotes set up as staging and production so you can easily use git push staging/production to deploy to each one of them. I'll be using that setup to explain how to make a staging env.</p> <ol> <li>create a <code>config/environments/staging.rb</code> which you will copy off `config/environments/production.rb'</li> <li>add a database.yml entry for the staging database(not really needed for heroku but can't hurt)</li> <li>Backup your .env file (if you have it)</li> <li>Install heroku-config plugin by <code>heroku plugins:install git://github.com/ddollar/heroku-config.git</code></li> <li>pull your environment settings from heroku(production server) with <code>heroku config:pull --remote production</code></li> <li>make changes to the .env file and don't forget to add these values to the config: <code>RACK_ENV=staging RAILS_ENV=staging</code> so it will use the staging environment configuration.</li> <li>fork a heroku environment with <code>heroku fork -a production staging</code> (those are heroku appnames you want instead of production/staging)</li> <li>Do a `heroku config:push --remote staging'</li> <li>Be sure to deploy the code to staging env properly</li> </ol> <p>You can also read this tutorial, i think i used it to get started with multiple envs on heroku: <a href="https://devcenter.heroku.com/articles/multiple-environments#managing-staging-and-production-configurations" rel="noreferrer">https://devcenter.heroku.com/articles/multiple-environments#managing-staging-and-production-configurations</a></p>

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