Free check does not work in length

Question

I am trying to get Fluent Validation to work correctly with my client side validation. I am using ASP.NET MVC 3.

I have a title that is required and is between 1 and 100 characters long. Therefore, while I am typing in the header, an error message appears that is not part of my rule set. Here is my set of rules:

RuleFor(x => x.Title) .NotEmpty() .WithMessage("Title is required") .Length(1, 100) .WithMessage("Title must be less than or equal to 100 characters"); 

Here is the error message that appears:

 Please enter a value less than or equal to 100 

I'm not sure what I'm doing wrong. Here is my global.asax:

 // FluentValidation DataAnnotationsModelValidatorProvider.AddImplicitRequiredAttributeForValueTypes = false; ModelValidatorProviders.Providers.Clear(); ModelValidatorProviders.Providers.Add( new FluentValidationModelValidatorProvider(new AttributedValidatorFactory())); ModelMetadataProviders.Current = new FluentValidationModelMetadataProvider( new AttributedValidatorFactory()); 

Answer 1

Works great for me. Here are the steps:

• Create a new RTM MVC 3 RTM project using the default Visual Studio template
• Download the latest version of FluentValidation.NET
• Compare the FluentValidation.dll and FluentValidation.Mvc.dll (be careful, there are two folders inside .zip: MVC2 and MVC3, so be sure to choose the appropriate assembly)

Add Model:

 [Validator(typeof(MyViewModelValidator))] public class MyViewModel { public string Title { get; set; } } 

and corresponding validator:

 public class MyViewModelValidator : AbstractValidator<MyViewModel> { public MyViewModelValidator() { RuleFor(x => x.Title) .NotEmpty() .WithMessage("Title is required") .Length(1, 5) .WithMessage("Title must be less than or equal to 5 characters"); } } 

Add to Application_Start :

 DataAnnotationsModelValidatorProvider.AddImplicitRequiredAttributeForValueTypes = false; ModelValidatorProviders.Providers.Clear(); ModelValidatorProviders.Providers.Add( new FluentValidationModelValidatorProvider(new AttributedValidatorFactory())); ModelMetadataProviders.Current = new FluentValidationModelMetadataProvider( new AttributedValidatorFactory()); 

Add Controller:

 public class HomeController : Controller { public ActionResult Index() { return View(new MyViewModel()); } [HttpPost] public ActionResult Index(MyViewModel model) { return View(model); } } 

and corresponding view:

 @model SomeApp.Models.MyViewModel @{ ViewBag.Title = "Home Page"; } <script src="@Url.Content("~/Scripts/jquery.validate.js")" type="text/javascript"></script> <script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.js")" type="text/javascript"></script> @using (Html.BeginForm()) { @Html.TextBoxFor(x => x.Title) @Html.ValidationMessageFor(x => x.Title) <input type="submit" value="OK" /> } 

Now try submitting the form, leaving the Title entry blank => client-side validation, and the “Title” message will appear. Now start typing => the error message will disappear. After entering more than 5 characters in the input field, the title should be less than or equal to 5 characters. So, everything works as expected.