Question

I am using FluentValidation and Ninject. I am trying to inject a service into AbstractValidator

[Validator(typeof(CompetitionFormModelValidator))]
public class CompetitionFormModel
{

    public string FirstName { get; set; }     

}

and for my validation:

public class CompetitionFormModelValidator : AbstractValidator<CompetitionFormModel>
{

    IUserService UserService;

    public CompetitionFormModelValidator(IUserService UserService)
    {

        this.UserService= UserService;

        RuleFor(c => c.FirstName).NotEmpty().WithMessage(" ").Length(1, 100);

        Custom(c =>
        {
            //.. try uusing UserService here


            return null;
        });      



    }
}

In my global.asax.cs

protected void Application_Start()
    {
        AreaRegistration.RegisterAllAreas();

        RegisterGlobalFilters(GlobalFilters.Filters);
        RegisterRoutes(RouteTable.Routes);

        var ninjectValidatorFactory = new NinjectValidatorFactory(new StandardKernel());
        ModelValidatorProviders.Providers.Add(new FluentValidationModelValidatorProvider(ninjectValidatorFactory));
        DataAnnotationsModelValidatorProvider.AddImplicitRequiredAttributeForValueTypes = false;
        FluentValidationModelValidatorProvider.Configure(x => x.ValidatorFactory = ninjectValidatorFactory);            

    }

In NinjectWebCommon.cs

private static void RegisterServices(IKernel kernel)
    {
        AssemblyScanner.FindValidatorsInAssembly(Assembly.GetExecutingAssembly())
.ForEach(match => kernel.Bind(match.InterfaceType)
    .To(match.ValidatorType));

        kernel.Bind<IUserService>().To<UserService>();

    } 

The project compiles just fine. When I wasn’t trying to use DI, validation was working just fine too. Now that I am trying inject IUserService, validation isn’t called.

Have I set up the configuration of ninject.web.mvc.fluentvalidation properly ? Any help would be greatly appreciated.

Answer 1

In your Application_Start, you new up the NinjectValidatorFactory with a new StandardKernel instead of using your existing kernel – so the validators you registered on your existing kernel won’t be found by the NinjectValidatorFactory.

Moving this block of code to a place where you have access to the existing kernel and passing that in should fix the problem.