littleshop/LittleShop/Validators/CreateProductDtoValidator.cs

using FluentValidation;
using LittleShop.DTOs;

namespace LittleShop.Validators;

public class CreateProductDtoValidator : AbstractValidator<CreateProductDto>
{
    public CreateProductDtoValidator()
    {
        RuleFor(x => x.Name)
            .NotEmpty().WithMessage("Product name is required")
            .MaximumLength(200).WithMessage("Product name cannot exceed 200 characters");

        RuleFor(x => x.Description)
            .NotEmpty().WithMessage("Product description is required");

        RuleFor(x => x.Price)
            .GreaterThan(0).WithMessage("Price must be greater than 0");

        RuleFor(x => x.Weight)
            .GreaterThan(0).WithMessage("Weight must be greater than 0");

        RuleFor(x => x.CategoryId)
            .NotEmpty().WithMessage("Category is required");
    }
}