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Grails vs Rails comparison

While following some of the Grails and Rails tutorials (Grails: The Definitive Guide to Grails. RoR: Creating a weblog in 15 minutes) I noticed a big difference on how they approach development. Consequently, I started a thread (Dynamic Domain classes) on the Grails user mailing list to confirm. What I found, thanks to Tim Pidgen, was that Grails is intentionally domain-centric (ie model-centric) whereas Rails is more database-centric. Whats the difference? With Grails you modify the domain classes (models) and the database is updated automatically. So properties are explicitly defined in the Grails domain classes; no database modification. Conversely, with Rails you create your "empty" model class and after you modify the database (add new fields to a table) you can just refresh the page; no need to add variables to your models.

Not sure either one is right or wrong; just wanted to point out the differences because it is a pretty significant difference.

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