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    <p>A few observations before I post an example of how to rework that.</p> <ul> <li>Giving a class a plural name can lead to a lot of semantic issues when declaring new objects, as in this case you'd call Items.new, implying you're creating several items when in fact actually making one. Use the singular form for individual entities.</li> <li>Be careful when calling arbitrary methods, as you'll throw an exception on any misses. Either check you can call them first, or rescue from the inevitable disaster where applicable.</li> </ul> <p>One way to approach your problem is to make a custom collection class specifically for Item objects where it can give you the information you need on names and such. For example:</p> <pre><code>class Item attr_accessor :item_id, :name, :description, :rating def initialize(options = { }) options.each do |k,v| method = :"#{k}=" # Check that the method call is valid before making it if (respond_to?(method)) self.send(method, v) else # If not, produce a meaningful error raise "Unknown attribute #{k}" end end end end class ItemsCollection &lt; Array # This collection does everything an Array does, plus # you can add utility methods like names. def names collect do |i| i.name end end end # Example # Create a custom collection items = ItemsCollection.new # Build a few basic examples [ { :item_id =&gt; 1, :name =&gt; 'Fastball', :description =&gt; 'Faster than a slowball', :rating =&gt; 2 }, { :item_id =&gt; 2, :name =&gt; 'Jack of Nines', :description =&gt; 'Hypothetical playing card', :rating =&gt; 3 }, { :item_id =&gt; 3, :name =&gt; 'Ruby Book', :description =&gt; 'A book made entirely of precious gems', :rating =&gt; 1 } ].each do |example| items &lt;&lt; Item.new(example) end puts items.names.join(', ') # =&gt; Fastball, Jack of Nines, Ruby Book </code></pre>
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    1. COis there a way to make it so that all of the attributes of Items automatically behave likes the 'names' method? IE. calling .descriptions returns the same as .names...?
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      1. USholden
    2. COIf you want to get adventuresome, you could either build these methods dynamically, or use method_missing to catch calls.
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    3. COCan I use Ruby mixins to add such functionality to all Arrays that contain ActiveRecord objects? Some pointers will be useful.
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