Null model handling in Web Api Validation

How fire validate method when my model is null.

I have tried to override validate method but it doesn’t work.

public class NullReferenceValidator<T> : AbstractValidator<T>
    {
        public override ValidationResult Validate(T instance)
        {
            return instance == null
                ? new ValidationResult(new[] { new ValidationFailure(instance.ToString(), "Entity can not be null.", "Error") })
                : base.Validate(instance);
        }
    }

Inherit me my Validatorwith above class. But It seems Validatemethod is not getting called in case of null model.

[Amit1150]

@nicklbailey : I did the same. But I want is there any I construct an object, if it is null then again call the validate method or something like this .

[JeremySkinner]

Hi,

That’s actually the correct behaviour. FluentValidation is designed to validate the properties of an object (eg a viewmodel/input model scenario where the object represents the state of a screen), so it must be non-null in order to run. You need to ensure the object is not null before passing it to FluentValidation.

On Tuesday, 17 May 2016, Amit1150 [e-mail] wrote:

How fire validate method when my model is null.

I have tried to override validate method but it doesn’t work.

public class NullReferenceValidator<T> : AbstractValidator<T> { public override ValidationResult Validate(T instance) { return instance == null ? new ValidationResult(new[] { new ValidationFailure(instance.ToString(), “Entity can not be null.”, “Error”) }) : base.Validate(instance); } }

Inherit me my Validatorwith above class. But It seems Validatemethod is not getting called in case of null model.

— You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub https://github.com/JeremySkinner/FluentValidation/issues/255