Username Exists Check In ViewModel / DomainModel?
Dec 5, 2010
I have ViewModel for Insert/Update/Delete. DI done on controller with Ninject implementing respository patter.
I am little confused. I have UserCreateViewModel bind to Create.aspx once submitted need to check UserName already in DB.
For 1 and 2 I need Constructor DI to call IsUserRegistered method from respository.
1- ViewModel.
2- domain model.
3- service layer. Is it right to add extra layer on to check UserName exists in DB?
4- Someone suggested to use Attribute for that and DI in that.
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[URL]
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