asp.net core web api project how to with fluentvalidation auto-validation

Question

I want to use fluentvalidation to automatically verify exceptions, but I can’t do this now. If I put the Validator in the same one project, it will work, but if I put it Validator in another library, it will not work。 The following project one

public class TestValidator : AbstractValidator<WeatherForecast>
{
    public TestValidator()
    {
        RuleFor(x => x.Summary).NotEmpty().WithMessage("Username or email are required");
    }

}

The following project two

I said that registration and verification are placed in different projects, which leads to abnormal verification.

services.AddMvc(options =>
    {
        options.Filters.Add(new ExceptionFilter());
    })
    .AddFluentValidation(options =>
    {
        options.RegisterValidatorsFromAssemblyContaining<Startup>();
    });

Yinqiu · Accepted Answer · 2021-07-19 02:12:35Z

1

You need change your startup to :

 .AddFluentValidation(options =>
{
    options.RegisterValidatorsFromAssemblyContaining<TestValidator>();
});

Test result:

answered Jul 19, 2021 at 2:12

Yinqiu

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10 Comments

beiduoan Over a year ago

Thank you for your answer，I want to automatically scan and register all validation classes that implement the IValidator interface and automatically validate。I want to intercept the verification error message and return a custom error message, how can I do it?

Yinqiu Over a year ago

You can see this thread may helpful.

Yinqiu Over a year ago

You only need to register one of them, the others will be registered by default

beiduoan Over a year ago

thank you ,I want to intercept the verification error message and return a custom error message, how can I do it?

Yinqiu Over a year ago

What do you mean? Isn’t your fluentvalidation your custom error message?

|

miri W. · Accepted Answer · 2024-04-15 05:17:14Z

0

Today this syntax is obsoleate, the new way to achieve this is

  builder.Services.AddFluentValidationAutoValidation();
     builder.Services.AddFluentValidationClientsideAdapters();
     builder.Services.AddValidatorsFromAssembly(typeof(Program).Assembly);

answered Apr 15, 2024 at 5:17

miri W.

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