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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="API documentation for the Rust `Route` struct in crate `actix_web`."><meta name="keywords" content="rust, rustlang, rust-lang, Route"><title>actix_web::dev::Route - Rust</title><link rel="stylesheet" type="text/css" href="../../normalize.css"><link rel="stylesheet" type="text/css" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../dark.css"><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><script src="../../storage.js"></script></head><body class="rustdoc struct"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">☰</div><p class='location'>Struct Route</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#methods">Methods</a><div class="sidebar-links"><a href="#method.filter">filter</a><a href="#method.h">h</a><a href="#method.f">f</a><a href="#method.a">a</a><a href="#method.with">with</a><a href="#method.with_config">with_config</a><a href="#method.with_async">with_async</a><a href="#method.with_async_config">with_async_config</a></div><a class="sidebar-title" href="#implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-Default">Default</a></div><a class="sidebar-title" href="#synthetic-implementations">Auto Trait Implementations</a><div class="sidebar-links"><a href="#impl-Send">!Send</a><a href="#impl-Sync">!Sync</a></div></div><p class='location'><a href='../index.html'>actix_web</a>::<wbr><a href='index.html'>dev</a></p><script>window.sidebarCurrent = {name: 'Route', ty: 'struct', relpath: ''};</script><script defer src="sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../theme.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><input class="search-input" name="search" autocomplete="off" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><a id="settings-menu" href="../../settings.html"><img src="../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class='fqn'><span class='in-band'>Struct <a href='../index.html'>actix_web</a>::<wbr><a href='index.html'>dev</a>::<wbr><a class="struct" href=''>Route</a></span><span class='out-of-band'><span id='render-detail'><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class='inner'>−</span>]</a></span><a class='srclink' href='../../src/actix_web/route.rs.html#25-28' title='goto source code'>[src]</a></span></h1><div class="docblock type-decl"><pre class='rust struct'>pub struct Route<S> { /* fields omitted */ }</pre></div><div class='docblock'><p>Resource route definition</p>
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<p>Route uses builder-like pattern for configuration.
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If handler is not explicitly set, default <em>404 Not Found</em> handler is used.</p>
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</div>
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<h2 id='methods' class='small-section-header'>
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Methods<a href='#methods' class='anchor'></a>
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</h2>
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<h3 id='impl' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl<S: 'static> <a class="struct" href="../../actix_web/dev/struct.Route.html" title="struct actix_web::dev::Route">Route</a><S></code><a href='#impl' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/route.rs.html#39-296' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.filter' class="method"><div class="important-traits"><div class='tooltip'>ⓘ<span class='tooltiptext'>Important traits for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a mut </a>R</span></div><div class="content hidden"><h3 class="important">Important traits for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a mut </a>R</h3><code class="content"><span class="where fmt-newline">impl<'a, R> <a class="trait" href="https://doc.rust-lang.org/nightly/std/io/trait.Read.html" title="trait std::io::Read">Read</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a mut </a>R <span class="where fmt-newline">where<br> R: <a class="trait" href="https://doc.rust-lang.org/nightly/std/io/trait.Read.html" title="trait std::io::Read">Read</a> + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></span><span class="where fmt-newline">impl<'a, W> <a class="trait" href="https://doc.rust-lang.org/nightly/std/io/trait.Write.html" title="trait std::io::Write">Write</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a mut </a>W <span class="where fmt-newline">where<br> W: <a class="trait" href="https://doc.rust-lang.org/nightly/std/io/trait.Write.html" title="trait std::io::Write">Write</a> + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></span><span class="where fmt-newline">impl<'a, I> <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/iterator/trait.Iterator.html" title="trait core::iter::iterator::Iterator">Iterator</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a mut </a>I <span class="where fmt-newline">where<br> I: <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/iterator/trait.Iterator.html" title="trait core::iter::iterator::Iterator">Iterator</a> + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></span><span class="where fmt-newline"> type <a href='https://doc.rust-lang.org/nightly/core/iter/iterator/trait.Iterator.html#associatedtype.Item' class="type">Item</a> = <I as <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/iterator/trait.Iterator.html" title="trait core::iter::iterator::Iterator">Iterator</a>>::<a class="type" href="https://doc.rust-lang.org/nightly/core/iter/iterator/trait.Iterator.html#associatedtype.Item" title="type core::iter::iterator::Iterator::Item">Item</a>;</span></code></div></div><span id='filter.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.filter' class='fnname'>filter</a><T: <a class="trait" href="../../actix_web/pred/trait.Predicate.html" title="trait actix_web::pred::Predicate">Predicate</a><S> + 'static>(&mut self, p: T) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/route.rs.html#78-81' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Add match predicate to route.</p>
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<pre class="rust rust-example-rendered">
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<span class="ident">App</span>::<span class="ident">new</span>().<span class="ident">resource</span>(<span class="string">"/path"</span>, <span class="op">|</span><span class="ident">r</span><span class="op">|</span> {
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<span class="ident">r</span>.<span class="ident">route</span>()
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.<span class="ident">filter</span>(<span class="ident">pred</span>::<span class="ident">Get</span>())
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.<span class="ident">filter</span>(<span class="ident">pred</span>::<span class="ident">Header</span>(<span class="string">"content-type"</span>, <span class="string">"text/plain"</span>))
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.<span class="ident">f</span>(<span class="op">|</span><span class="ident">req</span><span class="op">|</span> <span class="ident">HttpResponse</span>::<span class="prelude-val">Ok</span>())
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})</pre>
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</div><h4 id='method.h' class="method"><span id='h.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.h' class='fnname'>h</a><H: <a class="trait" href="../../actix_web/dev/trait.Handler.html" title="trait actix_web::dev::Handler">Handler</a><S>>(&mut self, handler: H)</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/route.rs.html#85-87' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Set handler object. Usually call to this method is last call
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during route configuration, so it does not return reference to self.</p>
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</div><h4 id='method.f' class="method"><span id='f.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.f' class='fnname'>f</a><F, R>(&mut self, handler: F) <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.Fn.html" title="trait core::ops::function::Fn">Fn</a>(&<a class="struct" href="../../actix_web/struct.HttpRequest.html" title="struct actix_web::HttpRequest">HttpRequest</a><S>) -> R + 'static,<br> R: <a class="trait" href="../../actix_web/trait.Responder.html" title="trait actix_web::Responder">Responder</a> + 'static, </span></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/route.rs.html#91-97' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Set handler function. Usually call to this method is last call
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during route configuration, so it does not return reference to self.</p>
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</div><h4 id='method.a' class="method"><span id='a.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.a' class='fnname'>a</a><H, R, F, E>(&mut self, handler: H) <span class="where fmt-newline">where<br> H: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.Fn.html" title="trait core::ops::function::Fn">Fn</a>(&<a class="struct" href="../../actix_web/struct.HttpRequest.html" title="struct actix_web::HttpRequest">HttpRequest</a><S>) -> F + 'static,<br> F: <a class="trait" href="https://docs.rs/futures/0.1/futures/future/trait.Future.html" title="trait futures::future::Future">Future</a><Item = R, Error = E> + 'static,<br> R: <a class="trait" href="../../actix_web/trait.Responder.html" title="trait actix_web::Responder">Responder</a> + 'static,<br> E: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><<a class="struct" href="../../actix_web/error/struct.Error.html" title="struct actix_web::error::Error">Error</a>> + 'static, </span></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/route.rs.html#100-108' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Set async handler function.</p>
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</div><h4 id='method.with' class="method"><span id='with.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.with' class='fnname'>with</a><T, F, R>(&mut self, handler: F) <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.Fn.html" title="trait core::ops::function::Fn">Fn</a>(T) -> R + 'static,<br> R: <a class="trait" href="../../actix_web/trait.Responder.html" title="trait actix_web::Responder">Responder</a> + 'static,<br> T: <a class="trait" href="../../actix_web/trait.FromRequest.html" title="trait actix_web::FromRequest">FromRequest</a><S> + 'static, </span></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/route.rs.html#167-174' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Set handler function, use request extractor for parameters.</p>
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<pre class="rust rust-example-rendered">
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<span class="attribute">#[<span class="ident">macro_use</span>]</span> <span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">serde_derive</span>;
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<span class="kw">use</span> <span class="ident">actix_web</span>::{<span class="ident">http</span>, <span class="ident">App</span>, <span class="ident">Path</span>, <span class="prelude-ty">Result</span>};
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<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Deserialize</span>)]</span>
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<span class="kw">struct</span> <span class="ident">Info</span> {
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<span class="ident">username</span>: <span class="ident">String</span>,
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}
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<span class="doccomment">/// extract path info using serde</span>
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<span class="kw">fn</span> <span class="ident">index</span>(<span class="ident">info</span>: <span class="ident">Path</span><span class="op"><</span><span class="ident">Info</span><span class="op">></span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> {
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<span class="prelude-val">Ok</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">"Welcome {}!"</span>, <span class="ident">info</span>.<span class="ident">username</span>))
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}
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<span class="kw">fn</span> <span class="ident">main</span>() {
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<span class="kw">let</span> <span class="ident">app</span> <span class="op">=</span> <span class="ident">App</span>::<span class="ident">new</span>().<span class="ident">resource</span>(
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<span class="string">"/{username}/index.html"</span>, <span class="comment">// <- define path parameters</span>
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<span class="op">|</span><span class="ident">r</span><span class="op">|</span> <span class="ident">r</span>.<span class="ident">method</span>(<span class="ident">http</span>::<span class="ident">Method</span>::<span class="ident">GET</span>).<span class="ident">with</span>(<span class="ident">index</span>),
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); <span class="comment">// <- use `with` extractor</span>
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}</pre>
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<p>It is possible to use tuples for specifing multiple extractors for one
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handler function.</p>
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<pre class="rust rust-example-rendered">
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<span class="attribute">#[<span class="ident">macro_use</span>]</span> <span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">serde_derive</span>;
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<span class="kw">use</span> <span class="ident">actix_web</span>::{<span class="ident">http</span>, <span class="ident">App</span>, <span class="ident">Json</span>, <span class="ident">Path</span>, <span class="ident">Query</span>, <span class="prelude-ty">Result</span>};
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<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Deserialize</span>)]</span>
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<span class="kw">struct</span> <span class="ident">Info</span> {
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<span class="ident">username</span>: <span class="ident">String</span>,
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}
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<span class="doccomment">/// extract path info using serde</span>
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<span class="kw">fn</span> <span class="ident">index</span>(
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<span class="ident">info</span>: (<span class="ident">Path</span><span class="op"><</span><span class="ident">Info</span><span class="op">></span>, <span class="ident">Query</span><span class="op"><</span><span class="ident">HashMap</span><span class="op"><</span><span class="ident">String</span>, <span class="ident">String</span><span class="op">>></span>, <span class="ident">Json</span><span class="op"><</span><span class="ident">Info</span><span class="op">></span>),
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) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> {
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<span class="prelude-val">Ok</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">"Welcome {}!"</span>, <span class="ident">info</span>.<span class="number">0</span>.<span class="ident">username</span>))
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}
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<span class="kw">fn</span> <span class="ident">main</span>() {
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<span class="kw">let</span> <span class="ident">app</span> <span class="op">=</span> <span class="ident">App</span>::<span class="ident">new</span>().<span class="ident">resource</span>(
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<span class="string">"/{username}/index.html"</span>, <span class="comment">// <- define path parameters</span>
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<span class="op">|</span><span class="ident">r</span><span class="op">|</span> <span class="ident">r</span>.<span class="ident">method</span>(<span class="ident">http</span>::<span class="ident">Method</span>::<span class="ident">GET</span>).<span class="ident">with</span>(<span class="ident">index</span>),
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); <span class="comment">// <- use `with` extractor</span>
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}</pre>
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</div><h4 id='method.with_config' class="method"><span id='with_config.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.with_config' class='fnname'>with_config</a><T, F, R, C>(&mut self, handler: F, cfg_f: C) <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.Fn.html" title="trait core::ops::function::Fn">Fn</a>(T) -> R + 'static,<br> R: <a class="trait" href="../../actix_web/trait.Responder.html" title="trait actix_web::Responder">Responder</a> + 'static,<br> T: <a class="trait" href="../../actix_web/trait.FromRequest.html" title="trait actix_web::FromRequest">FromRequest</a><S> + 'static,<br> C: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(&mut T::<a class="type" href="../../actix_web/trait.FromRequest.html#associatedtype.Config" title="type actix_web::FromRequest::Config">Config</a>), </span></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/route.rs.html#200-210' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Set handler function. Same as <code>.with()</code> but it allows to configure
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extractor.</p>
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<pre class="rust rust-example-rendered">
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<span class="attribute">#[<span class="ident">macro_use</span>]</span> <span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">serde_derive</span>;
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<span class="kw">use</span> <span class="ident">actix_web</span>::{<span class="ident">http</span>, <span class="ident">App</span>, <span class="ident">Path</span>, <span class="prelude-ty">Result</span>};
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<span class="doccomment">/// extract text data from request</span>
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<span class="kw">fn</span> <span class="ident">index</span>(<span class="ident">body</span>: <span class="ident">String</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> {
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<span class="prelude-val">Ok</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">"Body {}!"</span>, <span class="ident">body</span>))
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}
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<span class="kw">fn</span> <span class="ident">main</span>() {
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<span class="kw">let</span> <span class="ident">app</span> <span class="op">=</span> <span class="ident">App</span>::<span class="ident">new</span>().<span class="ident">resource</span>(<span class="string">"/index.html"</span>, <span class="op">|</span><span class="ident">r</span><span class="op">|</span> {
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<span class="ident">r</span>.<span class="ident">method</span>(<span class="ident">http</span>::<span class="ident">Method</span>::<span class="ident">GET</span>)
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.<span class="ident">with_config</span>(<span class="ident">index</span>, <span class="op">|</span><span class="ident">cfg</span><span class="op">|</span> { <span class="comment">// <- register handler</span>
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<span class="ident">cfg</span>.<span class="ident">limit</span>(<span class="number">4096</span>); <span class="comment">// <- limit size of the payload</span>
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})
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});
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}</pre>
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</div><h4 id='method.with_async' class="method"><span id='with_async.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.with_async' class='fnname'>with_async</a><T, F, R, I, E>(&mut self, handler: F) <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.Fn.html" title="trait core::ops::function::Fn">Fn</a>(T) -> R + 'static,<br> R: <a class="trait" href="https://docs.rs/futures/0.1/futures/future/trait.Future.html" title="trait futures::future::Future">Future</a><Item = I, Error = E> + 'static,<br> I: <a class="trait" href="../../actix_web/trait.Responder.html" title="trait actix_web::Responder">Responder</a> + 'static,<br> E: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><<a class="struct" href="../../actix_web/error/struct.Error.html" title="struct actix_web::error::Error">Error</a>> + 'static,<br> T: <a class="trait" href="../../actix_web/trait.FromRequest.html" title="trait actix_web::FromRequest">FromRequest</a><S> + 'static, </span></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/route.rs.html#241-250' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Set async handler function, use request extractor for parameters.
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Also this method needs to be used if your handler function returns
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<code>impl Future<></code></p>
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||
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<pre class="rust rust-example-rendered">
|
||
<span class="attribute">#[<span class="ident">macro_use</span>]</span> <span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">serde_derive</span>;
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<span class="kw">use</span> <span class="ident">actix_web</span>::{<span class="ident">http</span>, <span class="ident">App</span>, <span class="ident">Error</span>, <span class="ident">Path</span>};
|
||
<span class="kw">use</span> <span class="ident">futures</span>::<span class="ident">Future</span>;
|
||
|
||
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Deserialize</span>)]</span>
|
||
<span class="kw">struct</span> <span class="ident">Info</span> {
|
||
<span class="ident">username</span>: <span class="ident">String</span>,
|
||
}
|
||
|
||
<span class="doccomment">/// extract path info using serde</span>
|
||
<span class="kw">fn</span> <span class="ident">index</span>(<span class="ident">info</span>: <span class="ident">Path</span><span class="op"><</span><span class="ident">Info</span><span class="op">></span>) <span class="op">-></span> <span class="ident">Box</span><span class="op"><</span><span class="ident">Future</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="kw-2">&</span><span class="lifetime">'static</span> <span class="ident">str</span>, <span class="ident">Error</span> <span class="op">=</span> <span class="ident">Error</span><span class="op">>></span> {
|
||
<span class="macro">unimplemented</span><span class="macro">!</span>()
|
||
}
|
||
|
||
<span class="kw">fn</span> <span class="ident">main</span>() {
|
||
<span class="kw">let</span> <span class="ident">app</span> <span class="op">=</span> <span class="ident">App</span>::<span class="ident">new</span>().<span class="ident">resource</span>(
|
||
<span class="string">"/{username}/index.html"</span>, <span class="comment">// <- define path parameters</span>
|
||
<span class="op">|</span><span class="ident">r</span><span class="op">|</span> <span class="ident">r</span>.<span class="ident">method</span>(<span class="ident">http</span>::<span class="ident">Method</span>::<span class="ident">GET</span>).<span class="ident">with_async</span>(<span class="ident">index</span>),
|
||
); <span class="comment">// <- use `with` extractor</span>
|
||
}</pre>
|
||
</div><h4 id='method.with_async_config' class="method"><span id='with_async_config.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.with_async_config' class='fnname'>with_async_config</a><T, F, R, I, E, C>(&mut self, handler: F, cfg: C) <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.Fn.html" title="trait core::ops::function::Fn">Fn</a>(T) -> R + 'static,<br> R: <a class="trait" href="https://docs.rs/futures/0.1/futures/future/trait.Future.html" title="trait futures::future::Future">Future</a><Item = I, Error = E> + 'static,<br> I: <a class="trait" href="../../actix_web/trait.Responder.html" title="trait actix_web::Responder">Responder</a> + 'static,<br> E: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><<a class="struct" href="../../actix_web/error/struct.Error.html" title="struct actix_web::error::Error">Error</a>> + 'static,<br> T: <a class="trait" href="../../actix_web/trait.FromRequest.html" title="trait actix_web::FromRequest">FromRequest</a><S> + 'static,<br> C: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(&mut T::<a class="type" href="../../actix_web/trait.FromRequest.html#associatedtype.Config" title="type actix_web::FromRequest::Config">Config</a>), </span></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/route.rs.html#283-295' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Set async handler function, use request extractor for parameters.
|
||
This method allows to configure extractor.</p>
|
||
|
||
<pre class="rust rust-example-rendered">
|
||
<span class="attribute">#[<span class="ident">macro_use</span>]</span> <span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">serde_derive</span>;
|
||
<span class="kw">use</span> <span class="ident">actix_web</span>::{<span class="ident">http</span>, <span class="ident">App</span>, <span class="ident">Error</span>, <span class="ident">Form</span>};
|
||
<span class="kw">use</span> <span class="ident">futures</span>::<span class="ident">Future</span>;
|
||
|
||
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Deserialize</span>)]</span>
|
||
<span class="kw">struct</span> <span class="ident">Info</span> {
|
||
<span class="ident">username</span>: <span class="ident">String</span>,
|
||
}
|
||
|
||
<span class="doccomment">/// extract path info using serde</span>
|
||
<span class="kw">fn</span> <span class="ident">index</span>(<span class="ident">info</span>: <span class="ident">Form</span><span class="op"><</span><span class="ident">Info</span><span class="op">></span>) <span class="op">-></span> <span class="ident">Box</span><span class="op"><</span><span class="ident">Future</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="kw-2">&</span><span class="lifetime">'static</span> <span class="ident">str</span>, <span class="ident">Error</span> <span class="op">=</span> <span class="ident">Error</span><span class="op">>></span> {
|
||
<span class="macro">unimplemented</span><span class="macro">!</span>()
|
||
}
|
||
|
||
<span class="kw">fn</span> <span class="ident">main</span>() {
|
||
<span class="kw">let</span> <span class="ident">app</span> <span class="op">=</span> <span class="ident">App</span>::<span class="ident">new</span>().<span class="ident">resource</span>(
|
||
<span class="string">"/{username}/index.html"</span>, <span class="comment">// <- define path parameters</span>
|
||
<span class="op">|</span><span class="ident">r</span><span class="op">|</span> <span class="ident">r</span>.<span class="ident">method</span>(<span class="ident">http</span>::<span class="ident">Method</span>::<span class="ident">GET</span>)
|
||
.<span class="ident">with_async_config</span>(<span class="ident">index</span>, <span class="op">|</span><span class="ident">cfg</span><span class="op">|</span> {
|
||
<span class="ident">cfg</span>.<span class="ident">limit</span>(<span class="number">4096</span>);
|
||
}),
|
||
); <span class="comment">// <- use `with` extractor</span>
|
||
}</pre>
|
||
</div></div>
|
||
<h2 id='implementations' class='small-section-header'>
|
||
Trait Implementations<a href='#implementations' class='anchor'></a>
|
||
</h2>
|
||
<div id='implementations-list'><h3 id='impl-Default' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl<S: 'static> <a class="trait" href="https://doc.rust-lang.org/nightly/core/default/trait.Default.html" title="trait core::default::Default">Default</a> for <a class="struct" href="../../actix_web/dev/struct.Route.html" title="struct actix_web::dev::Route">Route</a><S></code><a href='#impl-Default' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/route.rs.html#30-37' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.default' class="method"><span id='default.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='https://doc.rust-lang.org/nightly/core/default/trait.Default.html#tymethod.default' class='fnname'>default</a>() -> <a class="struct" href="../../actix_web/dev/struct.Route.html" title="struct actix_web::dev::Route">Route</a><S></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/route.rs.html#31-36' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Returns the "default value" for a type. <a href="https://doc.rust-lang.org/nightly/core/default/trait.Default.html#tymethod.default">Read more</a></p>
|
||
</div></div></div>
|
||
<h2 id='synthetic-implementations' class='small-section-header'>
|
||
Auto Trait Implementations<a href='#synthetic-implementations' class='anchor'></a>
|
||
</h2>
|
||
<div id='synthetic-implementations-list'>
|
||
<h3 id='impl-Send' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl<S> !<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="../../actix_web/dev/struct.Route.html" title="struct actix_web::dev::Route">Route</a><S></code><a href='#impl-Send' class='anchor'></a></span></td><td><span class='out-of-band'></span></td></tr></tbody></table></h3><div class='impl-items'></div><h3 id='impl-Sync' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl<S> !<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="../../actix_web/dev/struct.Route.html" title="struct actix_web::dev::Route">Route</a><S></code><a href='#impl-Sync' class='anchor'></a></span></td><td><span class='out-of-band'></span></td></tr></tbody></table></h3><div class='impl-items'></div></div></section><section id="search" class="content hidden"></section><section class="footer"></section><aside id="help" class="hidden"><div><h1 class="hidden">Help</h1><div class="shortcuts"><h2>Keyboard Shortcuts</h2><dl><dt><kbd>?</kbd></dt><dd>Show this help dialog</dd><dt><kbd>S</kbd></dt><dd>Focus the search field</dd><dt><kbd>↑</kbd></dt><dd>Move up in search results</dd><dt><kbd>↓</kbd></dt><dd>Move down in search results</dd><dt><kbd>↹</kbd></dt><dd>Switch tab</dd><dt><kbd>⏎</kbd></dt><dd>Go to active search result</dd><dt><kbd>+</kbd></dt><dd>Expand all sections</dd><dt><kbd>-</kbd></dt><dd>Collapse all sections</dd></dl></div><div class="infos"><h2>Search Tricks</h2><p>Prefix searches with a type followed by a colon (e.g. <code>fn:</code>) to restrict the search to a given type.</p><p>Accepted types are: <code>fn</code>, <code>mod</code>, <code>struct</code>, <code>enum</code>, <code>trait</code>, <code>type</code>, <code>macro</code>, and <code>const</code>.</p><p>Search functions by type signature (e.g. <code>vec -> usize</code> or <code>* -> vec</code>)</p><p>Search multiple things at once by splitting your query with comma (e.g. <code>str,u8</code> or <code>String,struct:Vec,test</code>)</p></div></div></aside><script>window.rootPath = "../../";window.currentCrate = "actix_web";</script><script src="../../aliases.js"></script><script src="../../main.js"></script><script defer src="../../search-index.js"></script></body></html> |