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Binding of complex entity turns into validation error

Posted By:      Posted Date: August 28, 2010    Points: 0   Category :ASP.Net
consider classic example: Product and Category editing Product in dropdown Id of Category is selected - Category mapped as object with all fields empty except Id when submitting Product edit form - validation gives an error: "Category name is required" (I have Required attribute on Category Name property) How deal with such errors if I want to use built-in validation (if (!ModelState.IsValid))? Writing custom data binder which would fill all such id-only-objects with values from database comes to mind.upd: I did small research of mvc code and found out that validation happens before binding - so this solution would't work. Do you have any other solutions for this problem?

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