How to assign and retrieve value from settings file in ROR

I am using ruby 2.1.5 and rails 3.2.13.I need to use an array of values in two place namely in _index.html.haml and helper_file.rb.

array = ['cat','dog','lion','tiger','elephant']

I want to know how to handle this with out assign this array in two files. I am looking for a settings file where i need to save this array and get the value from that settings file to use in both _index.html.haml and helper_file.rb file.

Need help to do this.

Thanks