CODEWITHSUNDEEP
micronaut
giorgiga
giorgiga

Reputation: 1778

Binding custom objects as parameters in Micronaut http methods (@Get, @Post, ..)

In my app I have a custom Auth object that I set as a request parameter in a filter.

No problems there, but now all my conrollers look like

@Controller("/path")
public class MyController {

  @Get
  public Whatever get(HttpRequest<?> request) {
    Auth auth = request.getAttribute(SomeClass.AUTH_ATTRIBUTE_NAME);
    // code code code
  }

  @Post
  public Whatever post(HttpRequest<?> request, @Body SomePojo body) {
    Auth auth = request.getAttribute(SomeClass.AUTH_ATTRIBUTE_NAME);
    // code code code
  }

}

I would really like to somehow "teach" micronaut how to treat Auth like HttpRequest, HttpHeaders and the other values at Table 1. Bindable Micronaut Interfaces in the docs.

Basically I'd like to turn the above in:

@Controller("/path")
public class MyController {

  @Get
  public Whatever get(Auth auth) {
    // code code code
  }

  @Post
  public Whatever post(Auth auth, @Body SomePojo body) {
    // code code code
  }

}

Is there a way to do so?

I'm on micronaut 1.2.7. I tried

@Singleton
class AuthTypeConverterRegistrar implements TypeConverterRegistrar {
    @Override
    public void register(ConversionService<?> conversionService) {
        conversionService.addConverter(HttpRequest.class, Auth.class, request -> {
            return request.getAttribute("").map(Auth.class::cast).orElse(Auth.anonymous());
        });
    }
}

but it doesn't seem to work as I hoped.

Upvotes: 1

Views: 1547

Answers (1)

James Kleeh
James Kleeh

Reputation: 12238

You need to register a TypedRequestArgumentBinder bean.

You can look at SessionArgumentBinder as an example on how this is done because the session is just a request attribute as well.

Upvotes: 3

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