ruby on rails - Trying to hide some Twitter API credentials in a Yaml file, getting uninitialized constant EnvironmentVariables::Application::YAML -

i have initializer environment_variables.rb :

module environmentvariables     class application < rails::application         config.before_configuration             env_file = rails.root.join("config", 'environment_variables.yml').to_s              if file.exists?(env_file)                 yaml.load_file(env_file)[rails.env].each |key, value|                     env[key.to_s] = value                 end # end yaml.load_file             end # end if file.exists?         end # end config.before_configuration     end # end class end 

which i've checked finding file called environment_variables.ymlin config:

test:   twitter_consumer_key: ""   twitter_consumer_secret: ""   twitter_access_token: ""   twitter_access_token_secret: "" development:   twitter_consumer_key: ""   twitter_consumer_secret: ""   twitter_access_token: ""   twitter_access_token_secret: "" production:   twitter_consumer_key: ""    twitter_consumer_secret: ""    twitter_access_token: ""   twitter_access_token_secret: "" 

however error when trying run code:

class twitterapi     def client         @client ||= twitter.rest.client.new |config|             config.twitter_consumer_key = env['twitter_consumer_key']             config.twitter_consumer_secret = env['twitter_consumer_secret']             config.twitter_access_token = env['twitter_access_token']             config.twitter_access_token_secret = env['twitter_access_token_secret']         end      end end 

by making call in spec puts twitterapi.new.client test it. error looks this:

/users/nathanielmots/documents/development/takestock/stock/config/initializers/environment_variables.rb:7:in `block in <class:application>': uninitialized constant environmentvariables::application::yaml (nameerror) 

any suggestions problem? help.

uninitialized constant environmentvariables::application::yaml 

means, can't find definition of yaml. so, need require in file using yaml.

in environment_variables.rb, require yaml:

require 'yaml' 

this should fix issue.