FluentValidation 8.5.0-preview2

A validation library for .NET that uses a fluent interface to construct strongly-typed validation rules.

This is a prerelease version of FluentValidation.
There is a newer prerelease version of this package available.
See the version list below for details.
Install-Package FluentValidation -Version 8.5.0-preview2
dotnet add package FluentValidation --version 8.5.0-preview2
<PackageReference Include="FluentValidation" Version="8.5.0-preview2" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add FluentValidation --version 8.5.0-preview2
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Release Notes

FluentValidation 8 is a major release. Please read the upgrade notes at https://fluentvalidation.net/upgrading-to-8

Changes in 8.5.0:
* Add additional overload of the EmailAddress validator for compatibility with ASP.NET Core's default email validation.
* Simplify the advanced testhelper syntax.
* Add support for ASP.NET Core 3.
* Add support for defining child rules inline.
* ValidatorDescriptor now has consistent handling of model-level rules.

Changes in 8.4.0:
* Added simplified version of several messages across all translations to aid with ASP.NET Clientside validation.
* New enum validator for string properties.

Changes in 8.3.0:
* 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.

Changes in 8.2.3:
* Fix issue in WebApi integration where DataAnnotations validators could generate duplicate messages when in the same project as FluentValidation.

Changes in 8.2.2:
* Fix FluentValidation.DependencyInjection package name.

Changes in 8.2.1:
* Resolved issue using InjectValidator with RuleForEach.
* Add support for a default IValidatorInterceptor to be registered with the ASP.NET Core Service Provider.

Changes in 8.2.0:
* Add extensions for injecting child validators using the ASP.NET Core Service Provider.
* Implement RuleFor(...).ForEach(...) as an alternative to RuleForEach.
* WithLocalizedMessage is deprecated. Use the overload of WithMessage that takes a Func instead.

Changes in 8.1.3:
* Resolved issue where clientside validation was incorrectly generating metadata for rules with shared conditions.
* ScalePrecisionValidator now has a public method in the fluent interface.
* Fix placeholder names in ScalePrecisionValidator for consistency.
* Updates to Portuguese (Brazil) translations.

Changes in 8.1.2:
* Fix issue where shared When/Unless conditions didn't execute correctly when used with RuleForEach.

Changes in 8.1.1:
* Added RuleSetsExecuted property on ValidationResult.
* Resolved issue introduced in 8.1 where the shared condition cache does not work correctly with RuleForEach (#970).

Changes in 8.1:
* Add format support in message placeholders.
* Added support for overriding indexers for collection rules.
* Allow error codes to be used to override localization key in the Language Manager.
* Additional error details are now shown in the ShouldNotHaveValidationErrorFor test extension.
* Conditions defined with root-level When/WhenAsync/Unless/UnlessAsync are now only executed once (instead of once for each rule).
* Support Otherwise method chained from root-level When/WhenAsync/Unless/UnlessAsync.
* Minor wording changes to default English error messages.
* Japanese translation of the default error messages.
* Added Skip property to MVC5's CustomizeValidatorAttribute for parity with AspNetCore and WebApi.
* Remove type constraint on the OverridePropertyName overload that takes an expression.

Added Skip property to MVC5's CustomizeValidatorAttribute to bring parity with AspNetCore and WebApi integration.
Changes in 8.0:
* Support validating only specific properties by path.
* Added OnFailure method
* Deprecated RuleFor(..).SetCollectionValidator in favour of RuleForEach(...).SetValidator
* IStringSource.GetString now takes a validation context instead of a model instance.
* Introduce PropertyValidatorOptions in order to clean up the IPropretyValidator interface.
* Moved the legacy ValidatorAttribute and AttributedValidatorFactory into a separate FluentValidation.Attributes package.
* Remove the pre-7.0 localization mechanism
* Remove the pre-7.0 methods for custom validation
* Removed many other deprecated methods

Full release notes can be found at https://github.com/JeremySkinner/FluentValidation/blob/master/Changelog.txt

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Version History

Version Downloads Last updated
8.5.0-preview3 874 7/10/2019
8.5.0-preview2 4,885 6/13/2019
8.5.0-preview1 6,957 5/10/2019
8.4.0 464,366 5/10/2019
8.3.0 156,074 4/24/2019
8.2.3 96,908 4/12/2019
8.2.2 160,614 4/5/2019
8.2.1 16,705 4/4/2019
8.2.0 148,933 3/26/2019
8.1.3 1,064,537 1/25/2019
8.1.2 531,761 12/18/2018
8.1.1 135,151 12/11/2018
8.1.0 87,297 12/6/2018
8.1.0-preview2 4,291 11/14/2018
8.1.0-preview1 4,186 10/14/2018
8.0.101 205,886 11/24/2018
8.0.100 1,077,465 9/4/2018
8.0.0 253,868 8/16/2018
8.0.0-rc1 12,542 7/24/2018
8.0.0-preview4 1,891 7/16/2018
8.0.0-preview3 885 7/13/2018
8.0.0-preview2 631 7/13/2018
7.6.105 162,137 8/11/2018
7.6.104 824,019 7/6/2018
7.6.103 362,450 6/16/2018
7.6.102 80,268 6/14/2018
7.6.101 20,585 6/13/2018
7.6.100 52,107 6/7/2018
7.6.0 131,910 6/1/2018
7.6.0-preview1 8,384 4/12/2018
7.5.2 1,108,948 3/16/2018
7.5.1 68,656 3/11/2018
7.5.0 254,812 2/26/2018
7.4.0 406,446 1/26/2018
7.3.4 326,505 1/2/2018
7.3.3 82,801 12/22/2017
7.3.2 13,002 12/21/2017
7.3.1 97,760 12/13/2017
7.3.0 6,784 12/13/2017
7.3.0-beta3 5,420 12/8/2017
7.3.0-beta2 12,139 11/20/2017
7.3.0-beta1 2,190 11/11/2017
7.2.1 881,623 10/24/2017
7.2.0 267,100 10/5/2017
7.2.0-beta3 17,458 9/5/2017
7.2.0-beta2 3,795 8/22/2017
7.2.0-beta1 918 8/19/2017
7.1.1 706,684 7/25/2017
7.1.0 226,955 6/28/2017
7.1.0-beta1 797 6/24/2017
7.0.3 167,464 6/7/2017
7.0.2 103,049 5/26/2017
7.0.1 32,778 5/23/2017
7.0.0 101,708 5/19/2017
7.0.0-beta3 4,555 5/1/2017
7.0.0-beta2 4,351 4/17/2017
7.0.0-beta1 1,892 4/7/2017
6.4.1 458,725 3/15/2017
6.4.1-beta1 1,609 3/13/2017
6.4.0 343,697 3/3/2017
6.4.0-rc4 121,897 2/13/2017
6.4.0-rc3 9,979 2/3/2017
6.4.0-rc2 16,827 1/30/2017
6.4.0-rc1 753 1/30/2017
6.4.0-beta9 52,752 11/21/2016
6.4.0-beta8 24,241 10/31/2016
6.4.0-beta7 1,146 10/28/2016
6.4.0-beta6 1,538 10/25/2016
6.4.0-beta5 1,277 10/24/2016
6.4.0-beta4 1,274 10/21/2016
6.4.0-beta3 41,109 7/4/2016
6.4.0-beta2 2,091 7/1/2016
6.4.0-beta10 658 1/30/2017
6.4.0-beta1 4,008 6/28/2016
6.3.4-alpha 122,695 6/1/2016
6.3.3-alpha 1,052 5/27/2016
6.2.1 1,619,922 2/26/2016
6.2.1-beta1 4,784 2/24/2016
6.2.0 28,663 2/22/2016
6.2.0-beta1 1,059 2/12/2016
6.1.0 172,252 1/18/2016
6.0.2 54,030 1/5/2016
6.0.1 8,482 1/5/2016
6.0.0 28,460 12/22/2015
5.6.2 594,920 5/29/2015
5.6.1 6,130 5/29/2015
5.5.0 409,247 10/31/2014
5.4.0 248,079 7/3/2014
5.3.0 47,982 5/27/2014
5.2.0 19,610 5/21/2014
5.1.0 237,062 3/11/2014
5.0.0.1 140,149 10/24/2013
4.0.0.1 113,429 7/18/2013
4.0.0 58,078 4/29/2013
3.4.6 164,887 8/30/2012
3.4.0 23,371 8/17/2012
3.3.1 19,325 3/30/2012
3.2.0 32,020 11/14/2011
3.1.0 26,141 7/30/2011
3.0.0.1 2,742 7/5/2011
3.0.0 3,105 6/25/2011
2.0.0 13,570 1/9/2011
1.3.0 15,845 1/7/2011