rails 3, how use an ENV config vars in a Settings.yml file?

Question

In my settings.yml file I have several config vars, some of which reference ENV[] variables.

for example I have ENV['FOOVAR'] equals WIDGET

I thought I could reference ENV vars inside <% %> like this:

Settings.yml:

default:    cv1: Foo    cv2: <% ENV['FOOVAR'] %> 

in rails console if I type

> ENV['FOOVAR'] => WIDGET 

but

> Settings.cv1 => Foo   (works okay) > Settings.cv2 =>nil   (doesn't work???) 

Answer 1

use following:-

 default:        cv1: Foo        cv2: <%= ENV['FOOVAR'] %> 

Answer 2

The above solution did not work for me. However, I found the solution on How do I use variables in a YAML file?

My .yml file contained something like:

development: gmail_username: <%= ENV["GMAIL_USERNAME"] %> gmail_password: <%= ENV["GMAIL_PASSWORD"] %> 

The solution looks like:

template = ERB.new File.new("path/to/config.yml.erb").read processed = YAML.load template.result(binding) 

So when you introduce a scriptlet tag in .yml file, it is more of erb template. So read it as a erb template first and then load the yml as shown above.