Environment variables locally and Heroku

Question

I have a sinatra app in which i have a yml file to set environment variables, i call them using this method

module MyConfig

 def config
  environment = ENV["RACK_ENV"] || "development"
  YAML.load_file("./config/config.yml")[environment]
 end
 end

so when i want to use a variable i do this for example

aws_access_key_id = config['aws_access_key']

I have a .gitignore file that ignores config.yml when pushing to github for example.So when I push to heroku these environment variables will not be accessible?

So this leaves me with using the heroku way of setting them like so

heroku config:add aws_access_key= myapikey

but heroku accesses these like

aws_access_key_id = ENV['aws_access_key']

How can i set my dev environment to use method config and heroku use ENV, am i looking at this the wrong way? or does my config method do this for me?

Any help appreciated

RAKEFILE

  require 'active_support/core_ext'
  require './config/config.rb'
  require 'bundler/setup'
  Bundler.require(:default)

   include MyConfig

  AssetSync.configure do |con|
  con.fog_provider = 'AWS'
  con.fog_region = 'eu-west-1'
  con.fog_directory = config['fog_directory']
  con.aws_access_key_id = config['aws_access_key']
  con.aws_secret_access_key = config['aws_secret_key']
  con.prefix = "assets"
  con.public_path = Pathname("./public")
  end

 namespace :assets do
 desc "Precompile assets"
 task :precompile do
  AssetSync.sync
 end
end

Answer 1

Update:

I now use the dotenv gem instead of the example below. So instead of ignoring the env.rb file, I now ignore the .env file with Git.

Original post:

Try this,

# /env.rb

ENV['aws_bucket'] = 'my_bucket'
ENV['aws_access_key'] = 'my_access_key'
ENV['aws_access_secret'] = 'my_access_secret'

This file sets the same ENV values as heroku config would do.

# /config.rb

require './env' if File.exists?('env.rb')

The env.rb will only get required if it exists.

# /.gitignore

/env.rb

The env.rb has been added to the .gitignore file so it isn't kept in Git.

You would then access the values using ENV['key'] instead of config['key'].

You might need to change the path to the env.rb if it's not in the same directory as the config.rb file.

EDIT:

From looking at your Rakefile in the previous question, you need to change it to this:

# Rakefile

require 'bundler/setup'
Bundler.require(:default)
require './env' if File.exists?('env.rb')

AssetSync.configure do |con|
 con.fog_provider = 'AWS'
 con.fog_region = 'eu-west-1'
 con.fog_directory = ENV['aws_bucket']
 con.aws_access_key_id = ENV['aws_access_key']
 con.aws_secret_access_key = ENV['aws_access_secret']
 con.prefix = "assets"
 con.public_path = Pathname("./public")
end

namespace :assets do
  desc "Precompile assets"
  task :precompile do
    AssetSync.sync
  end
end

I've assumed that the only method in /config/config.rb was the config method so I've removed the,

require './config/config.rb'
include MyConfig

And swapped the config[key] for the ENV[key] values defined in env.rb. You may need to change the key names to match up.