Ruby on Rails use of environment variables

Question

I want to use in my code (in views as well) variables like:

ENV['SERVER_URL1']

And want them to be different for diffident environments (prod, dev, test)

Were and how should I set them up?
Is this (using ENV vars) a right way to configure application for different environments?
about ENV['SERVER_URL'] - is it a standard variable? When does it becomes available.

I tried to set in different parts of application (application.rb, development.rb)

ENV['SERVER_URL1'] = 'http://localhost:4000/'

but it seems not to work.

See this question. Do you really need them to be environment variables? — Dave Newton
– Dave Newton, Commented Nov 30, 2011 at 14:11
Well I want this variables to be different for local dev and prod heroku deploy, on heroku I can add ENV variables using config:add, but I don't know how to accomplish this task in my local dev environment. — WHITECOLOR
– WHITECOLOR, Commented Nov 30, 2011 at 14:19
Right, so you'd check for the environment in the initializer, and set appropriately. — Dave Newton
– Dave Newton, Commented Nov 30, 2011 at 14:20
I inserted to application.erb: ENV['SERVER_URL1'] = 'localhost:4000/path' but this value is not available in app. The same I did in development.rb — WHITECOLOR
– WHITECOLOR, Commented Nov 30, 2011 at 14:31
Did you read the link I provided? They don't do it like that. That's why I asked if you needed them to specifically be environment variables. — Dave Newton
– Dave Newton, Commented Nov 30, 2011 at 14:33

sealocal · Accepted Answer · 2014-11-20 03:38:39Z

1

When using Rails 4.1+, the new and preferred way to set ENV variables is to use the config/secrets.yml file.

Here is an excerpt from the 4.1 release notes

The secrets added to this file are accessible via Rails.application.secrets. For example, with the following config/secrets.yml:
development:
  secret_key_base: 3b7cd727ee24e8444053437c36cc66c3
  some_api_key: SOMEKEY
Rails.application.secrets.some_api_key returns SOMEKEY in the development environment.

See the Upgrading Ruby on Rails guide on how to migrate existing applications to use this feature.

So you should set:

development:
  SERVER_URL1: http://localhost:4000
production:
  SERVER_URL1: http://my-domain.com

answered Nov 20, 2014 at 3:38

sealocal

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