9.0-preview3

Release notes

Please read the upgrade guide for full details: https://docs.fluentvalidation.net/en/latest/upgrading-to-9.html

Changes in 9.0-preview3

• ASP.NET Core validator provider is now public
• Ensure ASP.NET Core providers aren't registered twice
• SoureLink integration
• Additional overload of SetValidator that receives property value in callback
• PropertyRule.ApplySharedCondition is now public
• Remove lowercase placeholders from ScalePrecisionValidator

Downloads

Binaries can be downloaded from nuget:

• FluentValidation - Main package
• FluentValidation.AspNetCore - ASP.NET Core integration

9.0-preview2

Release notes

Please read the upgrade guide for full details: https://docs.fluentvalidation.net/en/latest/upgrading-to-9.html

Changes since 9.0-preview1

• Transform can now be used to transform a property value to another type prior to validation occurring
• Added WithMessageArgument to test helper extensions
• Added Slovenian translations of default error messages.
• Fixes/better handling of the non-generic overloads of AbstractValidator.Validate
• Removed the deprecated FluentValidation.Internal.Comparer
• TrackingCollection has been marked as internal
• Updated to latest version of Microsoft.NETFramework.ReferenceAssemblies for building net4x targets on non-windows platforms.

Downloads

Binaries can be downloaded from nuget:

• FluentValidation - Main package
• FluentValidation.AspNetCore - ASP.NET Core integration

9.0-preview1

Release notes

Please read the upgrade guide for full details: https://docs.fluentvalidation.net/en/latest/upgrading-to-9.html

• Removed support for netstandard1.1, netstandard1.6, net45 (Supported platforms are now netstandard2, net461, netcoreapp2.1, netcoreapp3.0, netcoreapp3.1)
• Removed WithLocalizedMessage (WithMessage that takes a callback is the replacement)
• Removed ResourceName from ValidationFailure
• Removed ResourceName and ResourceType from IStringSource.
• Removed SetCollectionValidator which was deprecated in 8.0
• Additional overload of OnAnyFailure that can receive a collection of validation failures
• Remove DisplayAttribute integration and reference to DataAnnotations.
• Default email validation mode now uses the same logic as ASP.NET Core. Previous regex behaviour is opt-in.
• ComparisonProperty placeholder is now formatted like PropertyName.
• TestHelper syntax improvements
• Equal/NotEqual now perform ordinal comparisons on string properties by default
• Severity can be set with a callback
• PropertyValidator.ShouldValidateAsync reanamed to ShouldValidateAsynchronously to remove confusion where the naming suggested this was an async method
• Removed various methods from MessageFormatter that were deprecated in 8.x
• PropertyValidatorContext.Instance renamed to InstanceToValidate for consistency with ValidationContext.
• Removed DelegatingValidator which was deprecated in 8.x.

Downloads

Binaries can be downloaded from nuget:

• FluentValidation - Main package
• FluentValidation.AspNetCore - ASP.NET Core integration

8.6.1

Release notes

• Adds an explicit netcoreapp3.1 target for FluentValidation.AspNetCore.

Downloads

Binaries can be downloaded from nuget:

• FluentValidation - Main package
• FluentValidation.AspNetCore - ASP.NET Core integration

8.6.0

Release notes

• Added support for ASP.NET Core 3.1
• Fixed issue with property indexers being incorrectly stripped out when using test extensions.
• AddToModelState no longer includes a dot if PropertyName is null

Downloads

Binaries can be downloaded from nuget:

• FluentValidation - Main package
• FluentValidation.AspNetCore - ASP.NET Core integration
• FluentValidation.WebApi - Legacy ASP.NET Web Api 2 integration (deprecated)
• FluentValidation.Mvc5 - Legacy ASP.NET MVC 5 integration (deprecated)

8.5.1

Release notes

• Ensure lazily loaded calls to WithMessage can be used for client-side validation, provided they don't attempt to access model properties from inside the delegate (eg when using IStringLocalizer).
• Fix issue where OnFailure didn't work properly when invoked on validators with conditions.

Downloads

Binaries can be downloaded from nuget:

• FluentValidation - Main package
• FluentValidation.AspNetCore - ASP.NET Core integration
• FluentValidation.WebApi - Legacy ASP.NET Web Api 2 integration (deprecated)
• FluentValidation.Mvc5 - Legacy ASP.NET MVC 5 integration (deprecated)

8.5.0

Release notes

• Add support for ASP.NET Core 3.
• Add ASP.NET Core-compatible version of the email address validator.
• Simplify the advanced test-helper syntax.
• Add support for defining child rules inline when using RuleForEach.
• ValidatorDescriptor now has consistent handling of model-level rules.
• RuleForEach can now access collection index in error message with {CollectionIndex} placeholder.
• Welsh language translations of default error messages.
• Hungrian language translations of default error messages.
• Indonesian language translations of default error messages.
• Using RuleForEach combined with When has more intuitive behaviour.
• Fixed order of rule execution when using async validation.

Of these new features, the main one to note is the new ChildRules syntax. When defining a rule against a collection of complex types, rules for the child properties can be defined directly inline rather than having to use a child validator:

public class CustomerValidator : AbstractValidator<Customer> {
  public CustomerValidator() {
    RuleForEach(x => x.Orders).ChildRules(order => {
      order.RuleFor(x => x.ProductName).NotNull();
      order.RuleFor(x => x.Amount).GreaterThan(0);
    });
  }
}

Downloads

Binaries can be downloaded from nuget:

• FluentValidation - Main package
• FluentValidation.AspNetCore - ASP.NET Core integration
• FluentValidation.WebApi - Legacy ASP.NET Web Api 2 integration (deprecated)
• FluentValidation.Mvc5 - Legacy ASP.NET MVC 5 integration (deprecated)

8.4.0

Release notes

• Added simplified version of several messages across all translations to aid with ASP.NET Clientside validation.
• New enum validator for string properties.

Downloads

Binaries can be downloaded from nuget:

• FluentValidation - Main package
• FluentValidation.AspNetCore - ASP.NET Core integration
• FluentValidation.WebApi - Legacy ASP.NET Web Api 2 integration (deprecated)
• FluentValidation.Mvc5 - Legacy ASP.NET MVC 5 integration (deprecated)

8.3.0

Release notes

• Fix issue in ASP.NET Core integration with GetServiceProvider not working correctly when invoked against a CustomContext/MessageBuilderContext.
• Improved how LanguageStringSource works with error-code overrides.
• Fix thread-safety issue with use of PropertyValidatorOptions.Empty (now removed).
• Improved how calls to When/Unless are handled internally.
• DelegatingValidator is now marked as deprecated.
• Improvements to Croatian language translations.
• Improvements to Georgian language translations.
• Resolved subtle bug where top-level WhenAsync wouldn't work correctly when wrapping a top-level call to When.

8.2.3

Release Notes

• Fix issue with WebApi integration where DataAnnotations validation could generate duplicate messages when used in the same project as FluentValidation.