PersonValidator.cs

using FluentValidation;
using Sipay.Bootcamp.ECE_ERKCİ.FluentValidationDemo.Models;
using System.Text.RegularExpressions;
public class PersonValidator : AbstractValidator<Person>
{
    public PersonValidator()
    {
        RuleFor(p => p.Name)
            .NotEmpty()
            .WithMessage("Staff person name is required.")
            .Length(5, 100)
            .WithMessage("Staff person name must be between 5 and 100 characters.");

        RuleFor(p => p.Lastname)
            .NotEmpty()
            .WithMessage("Staff person lastname is required.")
            .Length(5, 100)
            .WithMessage("Staff person lastname must be between 5 and 100 characters.");

        RuleFor(p => p.Phone)
            .NotEmpty()
            .WithMessage("Staff person phone number is required.")
            .Phone()
            .WithMessage("Invalid phone number.");

        RuleFor(p => p.AccessLevel)
            .NotEmpty()
            .WithMessage("Staff person access level is required.")
            .InclusiveBetween(1, 5)
            .WithMessage("Staff person access level must be between 1 and 5.");

        RuleFor(p => p.Salary)
            .NotEmpty()
            .WithMessage("Staff person salary is required.")
            .InclusiveBetween(5000, 50000)
            .WithMessage("Staff person salary must be between 5000 and 50000.")
            .SetValidator(new SalaryAttributeValidator());
    }
}