C#•2y ago

Validating an object not received during a request(FluentValidation) [Answered]

Hi, I'm trying to achieve this: I receive Id and someRequest model from an endpoint(separate ID because I'm trying to comply to REST standards and don't want to cram [FromRoute] into the request model]. I also have a different someCommand model,the takes aforementioned id and model into the constructor and creates an object that will be queried against database)This model has validation using AbstractValidation<T> class of FluentValidation. I'm wondering, would these validators even work, considering I'm not receiving this model from the request?

4 Replies

Pobiega•2y ago

You can manually run the validation just fine

Customer customer = new Customer();
CustomerValidator validator = new CustomerValidator();

ValidationResult results = validator.Validate(customer);

if(! results.IsValid) 
{
  foreach(var failure in results.Errors)
  {
    Console.WriteLine("Property " + failure.PropertyName + " failed validation. Error was: " + failure.ErrorMessage);
  }
}

Customer customer = new Customer();
CustomerValidator validator = new CustomerValidator();

ValidationResult results = validator.Validate(customer);

if(! results.IsValid) 
{
  foreach(var failure in results.Errors)
  {
    Console.WriteLine("Property " + failure.PropertyName + " failed validation. Error was: " + failure.ErrorMessage);
  }
}

also, FluentValidation recommends against using the "automatic validation" style: https://docs.fluentvalidation.net/en/latest/aspnet.html so yeah, you can use manual validation when/whereever you want

honk•2y ago

Thanks! Didn't even know that bit about automatic validation!

Unknown User•2y ago

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Accord•2y ago

✅ This post has been marked as answered!

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Validating an object not received during a request(FluentValidation) [Answered]