Child Model Validation using Parent Model Values. Fluent Validation. MVC4

Question

Below is a simplified version of my problem.

I can not flatten the model. There is a List of \"children\" that I need to validate a birthday.

I can not seem

Answer 1

There is a way easier way to do this using set child validator:

public class ChildValidator : AbstractValidator
{
    public ChildValidator(Parent parent)
    {
        RuleFor(model => model.ChildProperty).NotEmpty();
        RuleFor(model => model.Birthday).Must(birthday => parent.Birthday > birthday);

    }
}

public class ParentValidator : AbstractValidator
{
    public ParentValidator()
    {
         RuleFor(model => model.Name).NotEmpty();
    }

    public override ValidationResult Validate(Parent parent)
    {
        RuleFor(model => model.Children).SetCollectionValidator(new ChildValidator(this));

        return base.Validate();
    }

}