New Post: Using SetCollectionValidator - Overriding/Adding RuleSet

Hi

The default behaviour is to cascade the ruleset selection to child validators. You can bypass this by writing your own implementation of IValidatorSelector rather than using the default RulesetValidatorSelector. Example:

public class MyValidatorSelector : IValidatorSelector {
    RulesetValidatorSelector _inner;
    string[] _ruleSetsToExecute;

    public MyValidatorSelector(string[] ruleSetsToExecute) {
        _inner = new RulesetValidatorSelector(ruleSetsToExecute);
        _ruleSetsToExecute = ruleSetsToExecute;
    }

    public bool CanExecute(IValidationRule rule, string propertyPath, ValidationContext context) {
        // If we're executing a child validator, and the child validator has no ruleset defined, then include it
        if (context.IsChildContext && string.IsNullOrEmpty(rule.RuleSet) && _ruleSetsToExecute.Length > 0) {
            return true;
        }
        return _inner.CanExecute(rule, propertyPath, context);
    }
}

Example usage:

public class MyValidator : AbstractValidator<Person> {
    public MyValidator() {
        RuleSet("test", () => {
            RuleFor(x => x.Surname).NotNull();
            RuleFor(x => x.Orders).SetValidator(new OrderValidator());
        });

        RuleFor(x => x.Forename).NotNull();
    }
}

public class OrderValidator : AbstractValidator<Order> {
    public OrderValidator() {
        RuleFor(x => x.ProductName).NotNull();
    }
}

var person = new Person() {
    Orders = {new Order()}
};

var validator = new MyValidator();

var rulesets = new[] { "test" };
var result = validator.Validate(person, selector: new MyValidatorSelector(rulesets));