env_helper

ENVHelper

By Cache Ventures

ENVHelper makes it easy to manage your environment variables when you have different types like Booleans or Integers without having to check and convert. It also makes it so you don't have to worry about environment variables being uppercase or lowercase.

Installation

Add this line to your application's Gemfile:

gem 'env_helper'

And then execute:

$ bundle

Or install it yourself as:

$ gem install env_helper

Usage

ENV['db_name'] = 'foobar'
ENV['DB_PASSWORD'] = 'password'
ENV['max_pool_size'] = '25'
ENV['phi'] = '1.61803'
ENV['ssl_enabled'] = 'true'
ENV['db_hosts'] = 'db1.foobar.com db2.foobar.com db3.foobar.com'
ENV['favorite_people'] = 'tom jones,joe smith,jebediah mason'
ENV['private_keys'] = 'key1:abcdef key2:fedcba'

ENVHelper.get('db_name')
"foobar"

ENVHelper.get('db_password')
"password"

ENVHelper.int('max_pool_size')
25

ENVHelper.int('socket_timeout', 30)
30

ENVHelper.float('phi')
1.61803

ENVHelper.float('pi', 3.141592)
3.141592

ENVHelper.bool('ssl_enabled')
true

ENVHelper.bool('sharding_enabled', false)
false

ENVHelper.array('db_hosts')
['db1.foobar.com', 'db2.foobar.com', 'db3.foobar.com']

ENVHelper.array('favorite_people', nil, ',')
['tom jones', 'joe smith', 'jebediah mason']

ENVHelper.hash('private_keys')
{ 'key1' => 'abcdef', 'key2' => 'fedcba' }

Notes

All methods accept a default value as a second parameter and that parameter should be the type being returned. For example if you call ENVHelper.int('max_pool_size', 25) the second parameter is an Integer.

Configuration

# string used to split the environment variable to make the array
ENVHelper.array_seperator = ' ' # default is a space

# string used to split the hash key value groups in the hash
ENVHelper.hash_key_seperator = ' ' # default is a space

# string used to split the key from values in the hash
ENVHelper.hash_key_value_seperator = ':' # default is a colon

# whether or not to raise errors for empty environment variables
ENVHelper.raise_errors = true # defaults to false

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake test to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/cacheventures/env_helper.