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Exceptions After Save() Method

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I have a really simple little basket and I put a constraint on the table that stopped a user adding the same item twice. In my create action I have the save method that works fine, but if I try to add an item that is already in the table it returns the CDbException. Which is good.


I was thinking would the exist validator be able to solve this within the model. I wasn't sure how to set it as a "make sure it doesn't exist" kind of thing though.



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