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You might want to take a look at this: <a href="http://www.ruby-doc.org/docs/ProgrammingRuby/html/tut_modules.html" rel="nofollow">http://www.ruby-doc.org/docs/ProgrammingRuby/html/tut_modules.html</a> You can include a module in a class, and thereby make that module's methods available to that class. If you include Enumerable into a Rails model, then its methods would be available to that model. But since Enumerable's methods are already available to certain types of objects inside your Rails project, and those objects are available to be instantiated from inside your model, I don't see why you might do that, because Enumerable's methods are working just fine for the purposes they were designed. Anyway, you might find that one of the following might work for you: -- use Activerecord's sum method -- convert your object to an array, and use Enumerable's sum method -- write your own method, but don't call it sum, because you don't want to confuse yourself. Try commenting out the second occurrence of module Neuone in the following snippet, and see what happens. Then try commenting out the Charlie.one method, and see what happens. <pre><code>module Neuone def one 'neuone one' end def two 'neuone two' end </code></pre> end <pre><code>module Neuone def two 'neuone two two' end </code></pre> end class Charlie include Neuone <pre><code>def one 'charlie one' end </code></pre> end c = Charlie.new p c.one p c.two
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1. POExtending Enumerable in Rails 3
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1. COI am confusing myself. I was trying to extend the current Enumerable class with this module, but I clearly am not grasping how modules work within Ruby and how I might be confusing myself by having similar method names in the module (i.e. ActiveRecord - sum vs My Modules -sum). Thanks for the example and I'll read up a bit more.
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