Localization in DTO / Fluent Validators #180

lalitChougule created 5 years ago

Suppose this is my DTO

public class AnyDto
{
    [Required(ErrorMessage="Name is required")]
    public string Name { get; set;}
}

Or suppose this is my Validator Class

public class AnyDtoValidator : AbstractValidator<AnyDto>
    {
        public AnyDtoValidator()
        {
            RuleFor(x => x.Name).NotNull().WithMessage("Name is required");
        }
    }

I want to localize my errror message which is Name is required. How do I do it ?

Kindly provide solution in both cases DTO/Fluent Validators

lalitChougule created 5 years ago

How do we Check Duplicate Entities in Fluent Validators ? Where this duplicate check should be done? Contract/Domain/Application project ? Cause I have my Validator's in Application.Contracts project. Is this the right way to do it?

liangshiwei created 5 years ago

Support Team Fullstack Developer

Hi, You can add Fluent Validators in the Application project and you can inject IStringLocalizer interface to return localized content .

lalitChougule created 5 years ago

Thanks @liangshiwei

My DTO's are as below :

CustomerDto

public class CustomerDto : AuditedEntityDto<Guid>
{
    ....
}

AddressDto

public class AddressDto : AuditedEntityDto<Guid>
{
    ....
}

OrderDto

public class OrderDto : AuditedEntityDto<Guid>
{
    public CustomerDto Customer { get; set; }
    
    public AddressDto Address { get; set; }
}

As per your above solution I tried injecting IStringLocalizer<MyProjectResource> localizer as below

CustomerDtoValidator

public class CustomerDtoValidator : AbstractValidator<CustomerDto>
    {
        public CustomerDtoValidator(IStringLocalizer<MyProjectResource> _localizer)
        {
            ....
        }
    }

AddressDtoValidator

public class AddressDtoValidator : AbstractValidator<AddressDto>
    {
        public AddressDtoValidator(IStringLocalizer<MyProjectResource> _localizer)
        {
            ....
        }
    }

But I am not able to Implement below code for OrderDto :

public class OrderDtoValidator:AbstractValidator<SupplierCombinedDto>
    {
        public OrderDtoValidator()
        {
            RuleFor(x => x.Customer).SetValidator(new CustomerDtoValidator()); <-- ERROR
            RuleFor(x => x.Address).SetValidator(new AddressDtoValidator()); <-- ERROR
            
        }
    }

ERROR: There is no argument given that corresponds to the required formal parameter '_localizer' of CustomerDtoValidator(IStringLocalizer

What should I pass as argument ?

liangshiwei created 5 years ago

Support Team Fullstack Developer

Try :

public class OrderDtoValidator:AbstractValidator<SupplierCombinedDto>
    {
        public OrderDtoValidator(IStringLocalizer<MyProjectResource> _localizer)
        {
            RuleFor(x => x.Customer).SetValidator(new CustomerDtoValidator(_localizer));
            RuleFor(x => x.Address).SetValidator(new AddressDtoValidator(_localizer));
            
        }
    }

lalitChougule created 5 years ago

Thanks @liangshiwei

It worked, Just last question which remained unanswered before How do we Check Duplicate Entities in Fluent Validators ? I want to cross check from my Address table whether this record is already present in my table ( i.e duplicate address ) Is it possible in Fluent Validator ? And how do I do it ?

liangshiwei created 5 years ago

Support Team Fullstack Developer

I do n’t know much about FluentValidation, you can maybe inject repository to validator class and check duplicate entities. But I suggest you Check Duplicate Entities in the domain layer.