There are many ways you can set the environment variables.
Here are two of them,
Option One: Setting ENV variables via a yml file
Create a file config/local_env.yml:
config/local_env.yml:
SAMPLE_APP_DATABASE_USER: 'your username'
SAMPLE_APP_DATABASE_PASSWORD: '******'
The above are the names you will use like,ENV['SAMPLE_APP_DATABASE_USER']. these can be names as your wish. you can take any name, but we should use the same name in the ENV reference.
add it to gitignore:
/config/local_env.yml
Change some code in application.rb
application.rb:
config.before_configuration do
env_file = File.join(Rails.root, 'config', 'local_env.yml')
YAML.load(File.open(env_file)).each do |key, value|
ENV[key.to_s] = value
end if File.exists?(env_file)
end
The code opens the config/local_env.yml file, reads each key/value pair, and sets environment variables.
Using Environment Variables:
username: <%= ENV['SAMPLE_APP_DATABASE_USER'] %>
password: <%= ENV['SAMPLE_APP_DATABASE_PASSWORD'] %>
Option Two: Use the Figaro Gem
The gem takes advantage of Ruby’s ability to set environment variables as well as read them. The gem reads a config/application.yml file and sets environment variables before anything else is configured in the Rails application.
Here’s how to use it. In your Gemfile, add:
gem 'figaro'
and run bundle install
The gem provides a generator:
$ bundle exec figaro install
The generator creates a config/application.yml file and modifies the .gitignore file to prevent the file from being checked into a git repository.
You can add environment variables as key/value pairs to config/application.yml:
SAMPLE_APP_DATABASE_USER: 'your username'
SAMPLE_APP_DATABASE_PASSWORD: '******'
The environment variables will be available anywhere in your application as ENV variables:
ENV["SAMPLE_APP_DATABASE_USER"]
Here are the remaining ways you can achieve the same.
