Question

I’ve been following the railscast #85 by Ryan Bates at this link regarding YAML config files and I’ve ran into a problem that I can’t find an answer to. I am using Ruby 1.9.3p194 through RVM and Rails 3.2.6.

In my applications.rb, I have

require 'yaml'
APP_CONFIG = YAML.load_file("#{Rails.root}/config/config.yml")[Rails.env]

I put the following in /config/config.yml:

username: "userhere"
password: "pass"

When I try “rails s” it gives me an error

/opt/local/lib/ruby1.9/1.9.1/psych.rb:297:in `initialize': No such file or directory - /config/config.yml (Errno::ENOENT)

and when I try to load the page in Passenger, I get

Error message:
No such file or directory - /config/config.yml
Exception class:
Errno::ENOENT

I’ve tried the File.join line here but I got the same error

'join', can't convert nil to String (TypeError) 

When I searched for the answer, every single thread solved the issue of the yml file not found error by creating the file, but mine exists and it still gives me the error message. How can I fix this problem?

Answer 1

Answer is here: Why is my Rails.root nil?

The Application object does not exist yet, so Rails.root returns nil. Try putting the YAML config stuff in an initializer, like RB recommends.