Announcement: Deprecation of RegisterValidator... methods within calls to AddFluentValidation

[JeremySkinner]

Background

We currently provide 2 ways of registering validators with the ASP.NET service provider:

• Within calls to AddFluentValidation()
• With extension methods on the IServiceCollection

Both approaches do exactly the same thing. We will be deprecating the older approach (via AddFluentValidation) in favour of the extension method approach

Migration Steps

If you were previously calling one of the RegisterValidators... methods inside AddFluentValidation() you should migrate to calling the equivalent RegisterValidators... extension method:

Before:

public void ConfigureServices(IServiceCollection services) 
{
   // ... other configuration ...
 
  services.AddFluentValidation(config => 
  {
     config.RegisterValidatorsFromAssemblyContaining<SomeValidator>();
     // or
     config.RegisterValidatorsFromAssemblyContaining(typeof(SomeValidator));
     // or
     config.RegisterValidatorsFromAssembly(typeof(SomeValidator).Assembly);
   });
}

After:

public void ConfigureServices(IServiceCollection services) 
{
   // ... other configuration ...

   services.AddFluentValidationAutoValidation();
   services.AddFluentValidationClientsideAdapters();

   services.AddValidatorsFromAssemblyContaining<SomeValidator>();
   // or
   services.AddValidatorsFromAssemblyContaining(typeof(SomeValidator));
   // or
   services.AddValidatorsFromAssembly(typeof(SomeValidator).Assembly);
}