28 Feb 2006Flexible Application Configuration in Rails
Most of my rails application have required some form of application specific configuration. When the configuration varies depending on where I deploy it I prefer to externalize the configuration in a YAML file similar to the way database configuration is handled.
I remember reading a blog somewhere that suggested the use of OpenStruct and have since started using the following code placed at the bottom of my
Consider the scenario where
I could then access the the configuration data using
To make your code more robust in the scenario where either the proxy configuration is missing or the whole configuration file is missing I generally add in extra guards. Below is an example of the code I use to instantiate a Net:HTTP object. If the configuration file is present and it contains a proxy_config section then the code will attempt to instantiate a Net::HTTP::Proxy object. Otherwise the code will instantiate a plain old Net::HTTP that will not attempt to go via a proxy server.