How to custom extractors error response?

[Oodachi]

I want to customize the content of the response, how can I get the information provided by JsonRejection.

impl IntoResponse for ServerError {
    type Body = Full<Bytes>;
    type BodyError = Infallible;

    fn into_response(self) -> Response<Self::Body> {
        let (status_code, message) = match self {
            Self::ValidationError(_) => {
                let message = format!("Input validation error: [{}]", self).replace("\n", ", ");
                tracing::debug!("{}", message);
                (StatusCode::BAD_REQUEST, message)
            }
            Self::AxumJsonError(err) => {
                let message = format!("{:?}", err);
                (err.into_response().status(), message)
            }
            Self::ReInitializedError => (StatusCode::FORBIDDEN, self.to_string()),
            _ => {
                tracing::error!("Internal Server Error: [{}]", self.to_string());
                (
                    StatusCode::INTERNAL_SERVER_ERROR,
                    "Internal Server Error".to_string(),
                )
            }
        };

        let payload = Json(json!({ "error": message }));
        (status_code, payload).into_response()
    }
}

[davidpdrsn]

I don't quite follow what you mean. JsonRejection is an enum so you can match on each variant and handle the case. Similarly to whats shown here.

[Oodachi]

Sorry, I didn't describe it clearly.

Self::AxumJsonError(err) => {
    let message = match err {
        JsonRejection::InvalidJsonBody(e) => {
            // Item `0` is private, I want to get it
            format!("{}", e.0)
        }
        _ => todo!()
    };
    (err.into_response().status(), message)
}

[Svenskunganka]

The e variable is an InvalidJsonBody struct that implements both Debug and Display. Does using e directly rather than e.0 for format! do what you want?
Although the Display impl of the InvalidJsonBody struct will only write Failed to parse the request body as JSON to the formatter, which I guess isn't what you want?

Instead, you can get the e.0 field by calling e.source() as implemented in this macro.

[Oodachi]

The e variable is an InvalidJsonBody struct that implements both Debug and Display. Does using e directly rather than e.0 for format! do what you want? Although the Display impl of the InvalidJsonBody struct will only write Failed to parse the request body as JSON to the formatter, which I guess isn't what you want?

Instead, you can get the e.0 field by calling e.source() as implemented in this macro.

thank you very much!!!