Ruby on Rails: models that do not have a table

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Published on 2010-04-08T00:16:57Z Indexed on 2010/04/08 0:23 UTC
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What's the best way to create a model in Ruby on Rails that doesn't have an underlying implementation in as far as a database table goes? It's very common to write classes that perform behavior on a particular problem domain, yet can use some of the benefits that ActiveRecord has such as validation.

Is it best to just create it as a module or helper? What is the best practice here?

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