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Heroku

What is it?

Github only supports static front-end sites, so we need something more robust and scalable for our Rails apps. Heroku has everything that we need for this:

  • Dynos - run virtually any language
  • Database - always postgres
  • Tools and components
  • Connects with heaps of other applications (Salesforce etc.)
  • Good support

See here for more.

Steps for Deploying a Rails app to Heroku

  • Make an account - here.
  • Install the heroku toolbelt - see here or use brew install heroku
  • Make sure that it has worked
    • heroku --version
    • which heroku
  • Log in - heroku login
  • Make your Rails app
    • 'Deploy Early, Deploy Often'
    • Set the app up with PostgreSQL
      • rails new app_name --database=postgresql
      • rails new app_name -d postgresql
  • Change into the app directory and run bundle install to install all Gems and dependencies
  • At the end of the Gemfile, add this line - gem 'rails_12factor', group: :production and then run bundle install again
  • Make it a git repository
    • Run git init in the root folder of the project
    • git add ., git commit -m "Your commit message."
    • Run git status to make sure everything has worked
  • Run heroku create
  • Run git config --list | grep heroku to make sure it has worked
  • Run git push heroku master
  • Run heroku run rake db:migrate
    • Any command prefixed by heroku run will obviously run on the heroku terminal
  • Ensure that you have a running server, run heroku ps:scale web=1
  • Run heroku ps to make sure that that has all worked
  • Run heroku open to do exactly what you imagine

For this in far more detail, see here.

Common Heroku Commands

  • heroku run rake db:etc. (create, seed, migrate etc.)
  • heroku run rails console
  • heroku logs - Shows the rails server (once off)
  • heroku logs --tail - Shows the live server