#1: you return true to SupportsBrowserValidation, which can't be right, since you're calling a service which can really only be Server-Side, since it's accessing the persistence layer of your Model.
#2: the ValidationAttribute(s) have no knowledge of the container unless you supply that knowledge. If you want access to the implementation of IUserService, I don't see how you're going to get it unless you use the container (or, *gasp* create an instance yourself). In my opinion, it doesn't make sense to register a ValidationAttribute with the container, which is what it sounds like you're asking about... but somebody else may have a different view (I'd love to hear it). To me, although this is a validation process, the responsibility lies in the IUserService. -rb -----Original Message----- From: castle-project-users@googlegroups.com [mailto:castle-project-us...@googlegroups.com] On Behalf Of Yannis Sent: Monday, February 08, 2010 10:28 PM To: Castle Project Users Subject: Inject dependencies in custom validator attribute Hi all, I have spent over 2 days on this and havent found a good solution so far so I think its time to ask the experts :) I have a user registration form and I would like to make sure that the email/username entered doesnt already exist in the database. This is clearly a validation issue so i thought of creating a validation attribute to perform this task. currently i have the following code and i am trying to inject IUserService. I know i could do hacks like IOC.Resolve<IUserService>() in the getter but i would like to keep my code free from coupling it with the container. thx a lot public class ValidateUniqueEmailAttribute : AbstractValidationAttribute { private readonly String _Message; public ValidateUniqueEmailAttribute(String message) { _Message = message; } public IUserService UserService { get; set; } public override IValidator Build() { var validator = new UniqueEmailValidator(UserService) { ErrorMessage = _Message }; ConfigureValidatorMessage(validator); return validator; } } and public class UniqueEmailValidator : AbstractValidator { private IUserService _UserService; public UniqueEmailValidator(IUserService userService) { _UserService = userService; } public override bool IsValid(object instance, object fieldValue) { if (fieldValue == null) return true; return _UserService.EmailExists(fieldValue.ToString()); } public override bool SupportsBrowserValidation { get { return true; } } } -- You received this message because you are subscribed to the Google Groups "Castle Project Users" group. To post to this group, send email to castle-project-us...@googlegroups.com. To unsubscribe from this group, send email to castle-project-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/castle-project-users?hl=en. -- You received this message because you are subscribed to the Google Groups "Castle Project Users" group. To post to this group, send email to castle-project-us...@googlegroups.com. To unsubscribe from this group, send email to castle-project-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/castle-project-users?hl=en.
