FluentValidation 8.5.1

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

There is a newer version of this package available.
See the version list below for details.
Install-Package FluentValidation -Version 8.5.1
dotnet add package FluentValidation --version 8.5.1
<PackageReference Include="FluentValidation" Version="8.5.1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add FluentValidation --version 8.5.1
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 8.5.1:
* 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.

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.
* 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 is now more intuitive.
* Fixed order of rule execution when using async validation.

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

NuGet packages (663)

Showing the top 5 NuGet packages that depend on FluentValidation:

Package Downloads
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
FluentValidation.WebAPI
ASP.NET WebApi integration for FluentValidation
FluentValidation.MVC5
ASP.NET MVC 5 integration for FluentValidation
Ocelot
Ocelot is an API Gateway. The project is aimed at people using .NET running a micro services / service orientated architecture that need a unified point of entry into their system. In particular I want easy integration with IdentityServer reference and bearer tokens. reference tokens. Ocelot is a bunch of middlewares in a specific order. Ocelot manipulates the HttpRequest object into a state specified by its configuration until it reaches a request builder middleware where it creates a HttpRequestMessage object which is used to make a request to a downstream service. The middleware that makes the request is the last thing in the Ocelot pipeline. It does not call the next middleware. The response from the downstream service is stored in a per request scoped repository and retrived as the requests goes back up the Ocelot pipeline. There is a piece of middleware that maps the HttpResponseMessage onto the HttpResponse object and that is returned to the client. That is basically it with a bunch of other features.

GitHub repositories (74)

Showing the top 5 popular GitHub repositories that depend on FluentValidation:

Repository Stars
aspnetboilerplate/aspnetboilerplate
ASP.NET Boilerplate - Web Application Framework
NancyFx/Nancy
Lightweight, low-ceremony, framework for building HTTP based services on .Net and Mono
Sonarr/Sonarr
Smart PVR for newsgroup and bittorrent users.
ThreeMammals/Ocelot
.NET core API Gateway
abpframework/abp
Open Source Web Application Framework for ASP.NET Core

Version History

Version Downloads Last updated
9.3.0-preview3 775 10/19/2020
9.3.0-preview2 11,233 9/15/2020
9.3.0-preview1 2,828 8/26/2020
9.2.2 269,258 9/20/2020
9.2.1 3,124 9/19/2020
9.2.0 628,305 8/26/2020
9.1.3 172,760 8/19/2020
9.1.2 129,052 8/12/2020
9.1.1 85,417 8/8/2020
9.1.0 1,920 8/8/2020
9.0.1 571,548 7/14/2020
9.0.0-preview5 29,522 5/23/2020
9.0.0-preview4 39,160 4/22/2020
9.0.0-preview3 71,478 2/29/2020
9.0.0-preview2 16,515 2/21/2020
9.0.0-preview1 32,927 2/8/2020
8.6.3 23,169 8/28/2020
8.6.2 5,414,605 2/29/2020
8.6.1 3,496,777 12/28/2019
8.6.0 1,545,868 12/4/2019
8.5.1 1,331,081 11/2/2019
8.5.0 2,023,917 9/24/2019
8.5.0-preview5 42,247 9/1/2019
8.5.0-preview4 69,211 7/23/2019
8.5.0-preview3 25,610 7/10/2019
8.5.0-preview2 35,018 6/13/2019
8.5.0-preview1 41,491 5/10/2019
8.4.0 5,900,424 5/10/2019
8.3.0 999,886 4/24/2019
8.2.3 309,293 4/12/2019
8.2.2 471,124 4/5/2019
8.2.1 77,163 4/4/2019
8.2.0 505,256 3/26/2019
8.1.3 2,885,353 1/25/2019
8.1.2 1,165,643 12/18/2018
8.1.1 343,660 12/11/2018
8.1.0 247,237 12/6/2018
8.1.0-preview2 25,191 11/14/2018
8.1.0-preview1 25,043 10/14/2018
8.0.101 379,290 11/24/2018
8.0.100 2,087,706 9/4/2018
8.0.0 465,786 8/16/2018
8.0.0-rc1 34,524 7/24/2018
8.0.0-preview4 21,794 7/16/2018
8.0.0-preview3 20,640 7/13/2018
8.0.0-preview2 20,398 7/13/2018
7.6.105 494,667 8/11/2018
7.6.104 1,480,769 7/6/2018
7.6.103 650,904 6/16/2018
7.6.102 153,468 6/14/2018
7.6.101 59,366 6/13/2018
7.6.100 122,883 6/7/2018
7.6.0 233,393 6/1/2018
7.6.0-preview1 31,058 4/12/2018
7.5.2 1,762,443 3/16/2018
7.5.1 150,064 3/11/2018
7.5.0 482,538 2/26/2018
7.4.0 705,342 1/26/2018
7.3.4 584,485 1/2/2018
7.3.3 134,788 12/22/2017
7.3.2 43,386 12/21/2017
7.3.1 177,045 12/13/2017
7.3.0 31,952 12/13/2017
7.3.0-beta3 25,095 12/8/2017
7.3.0-beta2 37,791 11/20/2017
7.3.0-beta1 22,045 11/11/2017
7.2.1 1,438,718 10/24/2017
7.2.0 466,461 10/5/2017
7.2.0-beta3 37,403 9/5/2017
7.2.0-beta2 23,714 8/22/2017
7.2.0-beta1 20,547 8/19/2017
7.1.1 997,649 7/25/2017
7.1.0 313,190 6/28/2017
7.1.0-beta1 20,394 6/24/2017
7.0.3 281,283 6/7/2017
7.0.2 159,200 5/26/2017
7.0.1 55,705 5/23/2017
7.0.0 217,605 5/19/2017
7.0.0-beta3 24,336 5/1/2017
7.0.0-beta2 24,017 4/17/2017
7.0.0-beta1 21,554 4/7/2017
6.4.1 682,990 3/15/2017
6.4.1-beta1 21,305 3/13/2017
6.4.0 491,967 3/3/2017
6.4.0-rc4 142,552 2/13/2017
6.4.0-rc3 29,882 2/3/2017
6.4.0-rc2 36,590 1/30/2017
6.4.0-rc1 20,409 1/30/2017
6.4.0-beta9 76,437 11/21/2016
6.4.0-beta8 46,035 10/31/2016
6.4.0-beta7 20,959 10/28/2016
6.4.0-beta6 21,373 10/25/2016
6.4.0-beta5 21,069 10/24/2016
6.4.0-beta4 21,104 10/21/2016
6.4.0-beta3 62,483 7/4/2016
6.4.0-beta2 21,935 7/1/2016
6.4.0-beta10 20,254 1/30/2017
6.4.0-beta1 24,091 6/28/2016
6.3.4-alpha 209,685 6/1/2016
6.3.3-alpha 20,683 5/27/2016
6.2.1 2,236,597 2/26/2016
6.2.1-beta1 24,497 2/24/2016
6.2.0 78,327 2/22/2016
6.2.0-beta1 20,730 2/12/2016
6.1.0 234,568 1/18/2016
6.0.2 86,948 1/5/2016
6.0.1 32,999 1/5/2016
6.0.0 62,197 12/22/2015
5.6.2 784,775 5/29/2015
5.6.1 26,724 5/29/2015
5.5.0 606,373 10/31/2014
5.4.0 350,856 7/3/2014
5.3.0 74,215 5/27/2014
5.2.0 48,026 5/21/2014
5.1.0 364,798 3/11/2014
5.0.0.1 200,233 10/24/2013
4.0.0.1 163,485 7/18/2013
4.0.0 85,591 4/29/2013
3.4.6 217,228 8/30/2012
3.4.0 47,892 8/17/2012
3.3.1 40,810 3/30/2012
3.2.0 53,598 11/14/2011
3.1.0 47,041 7/30/2011
3.0.0.1 22,486 7/5/2011
3.0.0 26,429 6/25/2011
2.0.0 40,295 1/9/2011
1.3.0 42,668 1/7/2011
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