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See [`Redirect`] for service/responder documentation. </span><span class="kw">use </span>std::borrow::Cow; <span class="kw">use </span>actix_utils::future::ready; <span class="kw">use crate</span>::{ dev::{fn_service, AppService, HttpServiceFactory, ResourceDef, ServiceRequest}, http::{header::LOCATION, StatusCode}, HttpRequest, HttpResponse, Responder, }; <span class="doccomment">/// An HTTP service for redirecting one path to another path or URL. /// /// By default, the "307 Temporary Redirect" status is used when responding. See [this MDN /// article][mdn-redirects] on why 307 is preferred over 302. /// /// # Examples /// As service: /// ``` /// use actix_web::{web, App}; /// /// App::new() /// // redirect "/duck" to DuckDuckGo /// .service(web::redirect("/duck", "https://duck.com")) /// .service( /// // redirect "/api/old" to "/api/new" /// web::scope("/api").service(web::redirect("/old", "/new")) /// ); /// ``` /// /// As responder: /// ``` /// use actix_web::{web::Redirect, Responder}; /// /// async fn handler() -> impl Responder { /// // sends a permanent (308) redirect to duck.com /// Redirect::to("https://duck.com").permanent() /// } /// # actix_web::web::to(handler); /// ``` /// /// [mdn-redirects]: https://developer.mozilla.org/en-US/docs/Web/HTTP/Redirections#temporary_redirections </span><span class="attr">#[derive(Debug, Clone)] </span><span class="kw">pub struct </span>Redirect { from: Cow<<span class="lifetime">'static</span>, str>, to: Cow<<span class="lifetime">'static</span>, str>, status_code: StatusCode, } <span class="kw">impl </span>Redirect { <span class="doccomment">/// Construct a new `Redirect` service that matches a path. /// /// This service will match exact paths equal to `from` within the current scope. I.e., when /// registered on the root `App`, it will match exact, whole paths. But when registered on a /// `Scope`, it will match paths under that scope, ignoring the defined scope prefix, just like /// a normal `Resource` or `Route`. /// /// The `to` argument can be path or URL; whatever is provided shall be used verbatim when /// setting the redirect location. This means that relative paths can be used to navigate /// relatively to matched paths. /// /// Prefer [`Redirect::to()`](Self::to) when using `Redirect` as a responder since `from` has /// no meaning in that context. /// /// # Examples /// ``` /// # use actix_web::{web::Redirect, App}; /// App::new() /// // redirects "/oh/hi/mark" to "/oh/bye/johnny" /// .service(Redirect::new("/oh/hi/mark", "../../bye/johnny")); /// ``` </span><span class="kw">pub fn </span>new(from: <span class="kw">impl </span>Into<Cow<<span class="lifetime">'static</span>, str>>, to: <span class="kw">impl </span>Into<Cow<<span class="lifetime">'static</span>, str>>) -> <span class="self">Self </span>{ <span class="self">Self </span>{ from: from.into(), to: to.into(), status_code: StatusCode::TEMPORARY_REDIRECT, } } <span class="doccomment">/// Construct a new `Redirect` to use as a responder. /// /// Only receives the `to` argument since responders do not need to do route matching. /// /// # Examples /// ``` /// use actix_web::{web::Redirect, Responder}; /// /// async fn admin_page() -> impl Responder { /// // sends a temporary 307 redirect to the login path /// Redirect::to("/login") /// } /// # actix_web::web::to(admin_page); /// ``` </span><span class="kw">pub fn </span>to(to: <span class="kw">impl </span>Into<Cow<<span class="lifetime">'static</span>, str>>) -> <span class="self">Self </span>{ <span class="self">Self </span>{ from: <span class="string">"/"</span>.into(), to: to.into(), status_code: StatusCode::TEMPORARY_REDIRECT, } } <span class="doccomment">/// Use the "308 Permanent Redirect" status when responding. /// /// See [this MDN article][mdn-redirects] on why 308 is preferred over 301. /// /// [mdn-redirects]: https://developer.mozilla.org/en-US/docs/Web/HTTP/Redirections#permanent_redirections </span><span class="kw">pub fn </span>permanent(<span class="self">self</span>) -> <span class="self">Self </span>{ <span class="self">self</span>.using_status_code(StatusCode::PERMANENT_REDIRECT) } <span class="doccomment">/// Use the "307 Temporary Redirect" status when responding. /// /// See [this MDN article][mdn-redirects] on why 307 is preferred over 302. /// /// [mdn-redirects]: https://developer.mozilla.org/en-US/docs/Web/HTTP/Redirections#temporary_redirections </span><span class="kw">pub fn </span>temporary(<span class="self">self</span>) -> <span class="self">Self </span>{ <span class="self">self</span>.using_status_code(StatusCode::TEMPORARY_REDIRECT) } <span class="doccomment">/// Use the "303 See Other" status when responding. /// /// This status code is semantically correct as the response to a successful login, for example. </span><span class="kw">pub fn </span>see_other(<span class="self">self</span>) -> <span class="self">Self </span>{ <span class="self">self</span>.using_status_code(StatusCode::SEE_OTHER) } <span class="doccomment">/// Allows the use of custom status codes for less common redirect types. /// /// In most cases, the default status ("308 Permanent Redirect") or using the `temporary` /// method, which uses the "307 Temporary Redirect" status have more consistent behavior than /// 301 and 302 codes, respectively. /// /// ``` /// # use actix_web::{http::StatusCode, web::Redirect}; /// // redirects would use "301 Moved Permanently" status code /// Redirect::new("/old", "/new") /// .using_status_code(StatusCode::MOVED_PERMANENTLY); /// /// // redirects would use "302 Found" status code /// Redirect::new("/old", "/new") /// .using_status_code(StatusCode::FOUND); /// ``` </span><span class="kw">pub fn </span>using_status_code(<span class="kw-2">mut </span><span class="self">self</span>, status: StatusCode) -> <span class="self">Self </span>{ <span class="self">self</span>.status_code = status; <span class="self">self </span>} } <span class="kw">impl </span>HttpServiceFactory <span class="kw">for </span>Redirect { <span class="kw">fn </span>register(<span class="self">self</span>, config: <span class="kw-2">&mut </span>AppService) { <span class="kw">let </span>redirect = <span class="self">self</span>.clone(); <span class="kw">let </span>rdef = ResourceDef::new(<span class="self">self</span>.from.into_owned()); <span class="kw">let </span>redirect_factory = fn_service(<span class="kw">move </span>|<span class="kw-2">mut </span>req: ServiceRequest| { <span class="kw">let </span>res = redirect.clone().respond_to(req.parts_mut().<span class="number">0</span>); ready(<span class="prelude-val">Ok</span>(req.into_response(res.map_into_boxed_body()))) }); config.register_service(rdef, <span class="prelude-val">None</span>, redirect_factory, <span class="prelude-val">None</span>) } } <span class="kw">impl </span>Responder <span class="kw">for </span>Redirect { <span class="kw">type </span>Body = (); <span class="kw">fn </span>respond_to(<span class="self">self</span>, _req: <span class="kw-2">&</span>HttpRequest) -> HttpResponse<<span class="self">Self</span>::Body> { <span class="kw">let </span><span class="kw-2">mut </span>res = HttpResponse::with_body(<span class="self">self</span>.status_code, ()); <span class="kw">if let </span><span class="prelude-val">Ok</span>(hdr_val) = <span class="self">self</span>.to.parse() { res.headers_mut().insert(LOCATION, hdr_val); } <span class="kw">else </span>{ <span class="macro">log::error!</span>( <span class="string">"redirect target location can not be converted to header value: {:?}"</span>, <span class="self">self</span>.to, ); } res } } <span class="attr">#[cfg(test)] </span><span class="kw">mod </span>tests { <span class="kw">use super</span>::<span class="kw-2">*</span>; <span class="kw">use crate</span>::{dev::Service, test, App}; <span class="attr">#[actix_rt::test] </span><span class="kw">async fn </span>absolute_redirects() { <span class="kw">let </span>redirector = Redirect::new(<span class="string">"/one"</span>, <span class="string">"/two"</span>).permanent(); <span class="kw">let </span>svc = test::init_service(App::new().service(redirector)).<span class="kw">await</span>; <span class="kw">let </span>req = test::TestRequest::default().uri(<span class="string">"/one"</span>).to_request(); <span class="kw">let </span>res = svc.call(req).<span class="kw">await</span>.unwrap(); <span class="macro">assert_eq!</span>(res.status(), StatusCode::from_u16(<span class="number">308</span>).unwrap()); <span class="kw">let </span>hdr = res.headers().get(<span class="kw-2">&</span>LOCATION).unwrap(); <span class="macro">assert_eq!</span>(hdr.to_str().unwrap(), <span class="string">"/two"</span>); } <span class="attr">#[actix_rt::test] </span><span class="kw">async fn </span>relative_redirects() { <span class="kw">let </span>redirector = Redirect::new(<span class="string">"/one"</span>, <span class="string">"two"</span>).permanent(); <span class="kw">let </span>svc = test::init_service(App::new().service(redirector)).<span class="kw">await</span>; <span class="kw">let </span>req = test::TestRequest::default().uri(<span class="string">"/one"</span>).to_request(); <span class="kw">let </span>res = svc.call(req).<span class="kw">await</span>.unwrap(); <span class="macro">assert_eq!</span>(res.status(), StatusCode::from_u16(<span class="number">308</span>).unwrap()); <span class="kw">let </span>hdr = res.headers().get(<span class="kw-2">&</span>LOCATION).unwrap(); <span class="macro">assert_eq!</span>(hdr.to_str().unwrap(), <span class="string">"two"</span>); } <span class="attr">#[actix_rt::test] </span><span class="kw">async fn </span>temporary_redirects() { <span class="kw">let </span>external_service = Redirect::new(<span class="string">"/external"</span>, <span class="string">"https://duck.com"</span>); <span class="kw">let </span>svc = test::init_service(App::new().service(external_service)).<span class="kw">await</span>; <span class="kw">let </span>req = test::TestRequest::default().uri(<span class="string">"/external"</span>).to_request(); <span class="kw">let </span>res = svc.call(req).<span class="kw">await</span>.unwrap(); <span class="macro">assert_eq!</span>(res.status(), StatusCode::from_u16(<span class="number">307</span>).unwrap()); <span class="kw">let </span>hdr = res.headers().get(<span class="kw-2">&</span>LOCATION).unwrap(); <span class="macro">assert_eq!</span>(hdr.to_str().unwrap(), <span class="string">"https://duck.com"</span>); } <span class="attr">#[actix_rt::test] </span><span class="kw">async fn </span>as_responder() { <span class="kw">let </span>responder = Redirect::to(<span class="string">"https://duck.com"</span>); <span class="kw">let </span>req = test::TestRequest::default().to_http_request(); <span class="kw">let </span>res = responder.respond_to(<span class="kw-2">&</span>req); <span class="macro">assert_eq!</span>(res.status(), StatusCode::from_u16(<span class="number">307</span>).unwrap()); <span class="kw">let </span>hdr = res.headers().get(<span class="kw-2">&</span>LOCATION).unwrap(); <span class="macro">assert_eq!</span>(hdr.to_str().unwrap(), <span class="string">"https://duck.com"</span>); } } </code></pre></div></section></main></body></html>