Deploying the Sinatra app, My-Favetools, to Heroku is a simpler task than deploying the React/Rails app to Heroku.
Postgresql
Heroku does not support Sqlite3 database. So the first order of business is to manually convert the sqlite3 database to Postgresql.
The steps to migrate to Postgresql are:
Update Gemfile to remove gem ‘sqlite3’ and replace it with gem ‘pg’
Run $ bundle install
Update config.environment.rb file to replace:
ActiveRecord::Base.establish_connection(
:adapter => "sqlite3",
:database => "db/#{ENV['SINATRA_ENV']}.sqlite"
)
with
set :database_file, './database.yml'
Create config/database.yml file to include:
development:
adapter: postgresql
encoding: unicode
database: database_development
pool: 2
production:
adapter: postgresql
encoding: unicode
databaes: database_production
pool: 5
Run $ rake db:create (this creates the new database)
Run $ rake db:seed (this populates the database with seed data)
Procfile: for production
Add Procfile to the project root directory to declare what commands are run by the application’s dynos on Heroku platform.
web: bundle exec thin start -p $PORT
release: bundle exec rake db:migrate
Test on the local Heroku server, run $ heroku local and view the local app at localhost:5000
Environment variables: dotenv
Update Gemfile to include:
gem 'dotenv'
Run $ bundle install
Update config/environment.rb to include:
require 'dotenv'
Dotenv.load
Create a .env file in the project root directory. Then we can add each environment specific variable on a new line:
SESSION_SECRET=project_session_secret
From application_controller.rb, we can now access the secret defined in our .env file.
set :session_secret, ENV['SESSION_SECRET']
Remember to add the .env file to your .gitignore so it doesn’t get saved to GitHub.
Deploy to Heroku
Create an account on Heroku website
Install Heroku CLI
Login to Heroku: $ heroku login
Create a Heroku app: $ heroku apps:create my-favetools
Configure the environment variables on Heroku:
$ heroku config:set SESSION_SECRET=project_session_secret
Push your project to the new Heroku app: $ git push heroku master
After the app is built on Heroku, set the seed file if you have any: $ heroku run rake db:seed
Run $ heroku open to open the url in a browser and view your app
Conclusion
That completes the deployment of my-favetools app to the internet.
You can find my app here: https://my-favetools.herokuapp.com/
*Sign up and login to keep track of and share your favorite tools. Or, you can use this pre-made user account setting to login:
$ username: jade
$ email: jade@email.com
$ password: Pass1@
Sources
Deploying a Simple Sinatra App with Postgres to Heroku