The most satisfying thing beyond building something is to make it available to the world. Heroku is great for beginners because it’s a free and “simple” push-to-deploy system. Always check that your app is working in your development environment, because it's more easy to fix something here, than on a production one. After you created your app, you developed it,loved it and hated it, it's time to share this masterpiece to the world. To do this, you have to sign-up for Heroku at https://signup.heroku.com/ Disclaimer :Here we assuming you run Ruby 2.6.5 and Rails 5.2.4.3 running on Ubuntu 20.04 Then you have to install the Heroku CLI as a deploy tool. It is very simple and convenient to use. To install the correct version for your system follow instructions at https://devcenter.heroku.com/articles/heroku-cli#download-and-install Working with Ruby is a pleasure, you know, but Heroku doesn't allow you to deploy an application running on SQLite3; In production the de-facto standard for database on Heroku is . PostgreSQL So you have to in your system, then change to into your run in your terminal, ensure that your file is using the postgresql adapter like this : gem install pg gem sqlite3 gem pg Gemfile bundle install config/database.yml default: &default adapter: postgresql encoding: unicode pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %> timeout: 5000 development:  <<: *default database: db/development.sqlite3 # Warning: The database defined as "test" will be erased and# re-generated from your development database when you run "rake". # Do not set this db to the same as development or production. test:  <<: *default database: db/test.sqlite3 production:  <<: *default database: db/production.sqlite3 If it's your first time using or installing PostgreSQL i suggest to follow this little walk-through , to get rid of any errors. Heroku CLI , , and your code onto the master branch. Now that everything is setup correctly, fresh&clean and your DB adapter is fine it's time to call the Heroku CLI. git add git commit git push Make sure you are in the directory that contains your Rails app, then create an app on Heroku: this will set your remote branch for deployment. You can check with: $ heroku create - $ git config --list | grep heroku Deploy your code: $ git push heroku master This will fetch, install and set gem, compile your code, run bundle and all the tasks needed for your app to stay live on the web. If you are using the database in your application, you need to manually migrate the database by running: $ heroku run rake db:migrate Now your app is on the Heroku server but to be able to visit and use this app you have to enable at least a on your app. To be sure, run: Dyno $ heroku ps:scale web=1 Your Web app is now online up and running, you can check by running: $ heroku open You can also check in the browser with the URL provided by Heroku. If you want to change the URL of your app you can go to your dashboard and change the URL to whatever you like, but remember to change also remote as Heroku suggests: $ git remote rm heroku $ heroku git:remote -a newname It is better to change directly from your app Git repository with: Here, is the name you want to give to your URL application. $ heroku apps:rename newname new name Hope this will be helpful for your first but not last deploy. Have a nice day and happy coding to everyone. You can follow me on or ,or follow, star and check out my project on . Twitter Linkedin Github

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