Struct actix_web_validator::JsonConfig

pub struct JsonConfig { /* fields omitted */ }

Json extractor configuration

use actix_web::{error, web, App, FromRequest, HttpResponse};
use serde::Deserialize;
use actix_web_validator::{Json, JsonConfig};
use validator::Validate;

#[derive(Deserialize, Validate)]
struct Info {
    #[validate(length(min = 3))]
    username: String,
}

/// deserialize `Info` from request's body, max payload size is 4kb
async fn index(info: Json<Info>) -> String {
    format!("Welcome {}!", info.username)
}

fn main() {
    let app = App::new().service(
        web::resource("/index.html")
            .app_data(
                // change json extractor configuration
                Json::<Info>::configure(|cfg| {
                    cfg.limit(4096)
                       .content_type(|mime| {  // <- accept text/plain content type
                           mime.type_() == mime::TEXT && mime.subtype() == mime::PLAIN
                       })
                       .error_handler(|err, req| {  // <- create custom error response
                          error::InternalError::from_response(
                              err, HttpResponse::Conflict().finish()).into()
                       })
            }))
            .route(web::post().to(index))
    );
}

Implementations

impl JsonConfig

pub fn limit(self, limit: usize) -> Self

Change max size of payload. By default max size is 32Kb

pub fn error_handler<F>(self, f: F) -> Self where
    F: Fn(Error, &HttpRequest) -> Error + Send + Sync + 'static, 

Set custom error handler

pub fn content_type<F>(self, predicate: F) -> Self where
    F: Fn(Mime) -> bool + Send + Sync + 'static, 

Set predicate for allowed content types

Trait Implementations

impl Clone for JsonConfig

fn clone(&self) -> JsonConfig

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for JsonConfig

fn default() -> Self

Returns the “default value” for a type.