middleware::errhandlers::ErrorHandlers

[beykery]

i use

middleware::errhandlers::ErrorHandlers::new().handler(http::StatusCode::INTERNAL_SERVER_ERROR, errhandle::render_500)

for processing the error 500 in my application as the example in errhandlers.rs

how can i modify the response body ? the example just modify a response header .

[fafhrd91]

https://docs.rs/actix-web/1.0.2/actix_web/struct.HttpResponse.html#method.map_body

https://docs.rs/actix-web/1.0.2/actix_web/struct.HttpResponse.html#method.take_body

example https://github.com/actix/actix-web/blob/master/src/test.rs#L314

[beykery]

thank , as the test.rs : res.take_body().take_body() .fold(BytesMut::new(), move |mut body, chunk| { body.extend_from_slice(&chunk); Ok::<_, Error>(body) }); but it result in : error[E0599]: no method named fold found for type actix_http::body::ResponseBody<B> in the current scope

[fafhrd91]

use futures::Stream;

[beykery]

sorry it dont work as bellow ：

` use actix_web::{get, middleware, web, App, HttpRequest, HttpResponse, HttpServer, dev, http, Result, Error}; use actix_web::middleware::errhandlers::ErrorHandlerResponse; use serde::{Serialize, Deserialize}; use actix_web::dev::ServiceResponse; use actix_http::http::StatusCode; use actix_http::Response; use actix_web::web::BytesMut; use futures::Stream;

pub fn render_500(mut res: dev::ServiceResponse) -> Result<ErrorHandlerResponse> { res.take_body() .fold(BytesMut::new(), move |mut body, chunk| { body.extend_fromslice(&chunk); Ok::<, Error>(body) }); Ok(ErrorHandlerResponse::Response(res)) } `

error[E0599]: no method named fold found for type actix_http::body::ResponseBody<B> in the current scope

[fafhrd91]

You may need to add B: MessageBody

https://github.com/actix/actix-web/blob/master/actix-http/src/body.rs#L104

[beykery]

i can't get it .

[pedrogao]

I can't get it too.

[Voronar]

https://users.rust-lang.org/t/actix-web-using-a-custom-error-handler-to-alter-the-response-body/41068/2