How to define custom configuration variables in rails

ruby-on-rails configuration
Shiv picture Shiv · Sep 20, 2009 · Viewed 171.4k times · Source

I was wondering how to add custom configuration variables to a rails application and how to access them in the controller, for e.g I wanna be able to define an upload_directory in the configuration files say development.rb and be able to access it in one of my controllers.

Secondly I was planning to have S3 support for uploads in my application, if i wanted to add a yaml file with the s3 access, secret key, how do I initialize it in my Rails App and how do I access the values that I have defined in that config file.

Answer

Jack Pratt picture Jack Pratt · Feb 19, 2011

In Rails 3, Application specific custom configuration data can be placed in the application configuration object. The configuration can be assigned in the initialization files or the environment files -- say for a given application MyApp:

MyApp::Application.config.custom_config_variable = :my_config_setting

or

Rails.configuration.custom_config_variable = :my_config_setting

To read the setting, simply call the configuration variable without setting it:

Rails.configuration.custom_config_variable
=> :my_config_setting

UPDATE Rails 4

In Rails 4 there a new way for this => http://guides.rubyonrails.org/configuring.html#custom-configuration

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