Are there advanced uses for Grails command objects? Majority of the pages out there have a command object with all of its fields as Strings, Floats, Integers. Is there a way to make it use domain classes similar to how a Domain class may have have a reference to another domain class.
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I don't see why not. Sure they can hold instances to other domain classes. Typically command objects are used when you only need a subset of the properties of your domain class or when there is no corresponding domain class.
aldrin
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simple question here!is there any difference in data binding when using command objects? – Amanuel Nega Nov 11 '14 at 09:07
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Yes, this is completely legal, and I use them this way in projects all the time. Their purpose is to validate input, and the main difference between a domain object and a command object is that the command object is not persisted.
Most of the sites probably do not use other Objects in order to make the example a bit simpler to understand.
Igor
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