EN

A simple, namespaceable environment fetcher that supports optionally dotenv

To get a variable value, do:

require 'en'

EN[:key]      # looks for ENV['KEY']
EN[:foo_bar]  # looks for ENV['FOO_BAR']

The #fetch method can give you more options:

require 'en'

EN.fetch(:key) { 'default_value' }

EN.fetch_int(:key)   # fails if value is not a valid Integer
EN.fetch_float(:key) # fails if value is not a valid Float

To load variables from a .env file via dotenv, do:

# .env file
KEY: value

# ruby file
require 'en'

EN.load

EN.fetch(:key)

To namespace your keys by a prefix, do:

def redis_env
  EN::Namespace.new(:redis)
end

port = redis_env.fetch_int(:port)