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POWhats a good ruby idiom for breaking up a large class into modules?
 

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  1. POWhats a good ruby idiom for breaking up a large class into modules?
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    <p>I have a large class with lots of methods and it's starting to get a bit unorganized and hard to navigate. I'd like to break it up into modules, where each module is a collection of class and instance methods. Perhaps something like this:</p> <p>UPDATE: I've now realized that this is a pretty poor example. You probably wouldn't want to move validations or attributes out of the core class.</p> <pre><code>class Large include Validations include Attributes include BusinessLogic include Callbacks end </code></pre> <p>After reading Yehuda's post about <a href="http://yehudakatz.com/2009/11/12/better-ruby-idioms/" rel="nofollow noreferrer">Better Ruby Idioms</a>, I'm curious how others are tackling this problem. Here's the two methods I can think of.</p> <h2>First Method</h2> <pre><code>module Foo module Validations module ClassMethods def bar "bar" end end module InstanceMethods def baz "baz" end end end class Large extend Validations::ClassMethods include Validations::InstanceMethods end end </code></pre> <h2>Second Method</h2> <pre><code>module Foo module Validations def self.included(base) base.extend ClassMethods end module ClassMethods def bar "bar" end end def baz "baz" end end class Base include Validations end end </code></pre> <h2>My questions are:</h2> <ul> <li>Is there a better way to do this?</li> <li>How do you get a one-liner module mixin for a set of class/instance methods with the least amount of magic?</li> <li>How do you namespace these modules to the base class without namespacing the class itself?</li> <li>How do you organize these files?</li> </ul>
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    1. USBen Marini
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    1. COI've sorta found the answer I was looking for in a blog post by engineyard: http://www.engineyard.com/blog/2010/let-them-code-cake/
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