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2018-07-21 04:09:47 -07:00

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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 `Resource` struct in crate `actix_web`."><meta name="keywords" content="rust, rustlang, rust-lang, Resource"><title>actix_web::dev::Resource - 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">&#9776;</div><p class='location'>Struct Resource</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#methods">Methods</a><div class="sidebar-links"><a href="#method.new">new</a><a href="#method.name">name</a><a href="#method.rdef">rdef</a><a href="#method.route">route</a><a href="#method.get">get</a><a href="#method.post">post</a><a href="#method.put">put</a><a href="#method.delete">delete</a><a href="#method.head">head</a><a href="#method.method">method</a><a href="#method.h">h</a><a href="#method.f">f</a><a href="#method.with">with</a><a href="#method.with_async">with_async</a><a href="#method.middleware">middleware</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: 'Resource', 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=''>Resource</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'>&#x2212;</span>]</a></span><a class='srclink' href='../../src/actix_web/resource.rs.html#40-44' title='goto source code'>[src]</a></span></h1><div class="docblock type-decl"><pre class='rust struct'>pub struct Resource&lt;S&nbsp;=&nbsp;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>&gt; { /* fields omitted */ }</pre></div><div class='docblock'><p><em>Resource</em> is an entry in route table which corresponds to requested URL.</p>
<p>Resource in turn has at least one route.
Route consists of an object that implements <code>Handler</code> trait (handler)
and list of predicates (objects that implement <code>Predicate</code> trait).
Route uses builder-like pattern for configuration.
During request handling, resource object iterate through all routes
and check all predicates for specific route, if request matches all
predicates route route considered matched and route handler get called.</p>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">actix_web</span>::{<span class="ident">App</span>, <span class="ident">HttpResponse</span>, <span class="ident">http</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">&quot;/&quot;</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">f</span>(<span class="op">|</span><span class="ident">r</span><span class="op">|</span> <span class="ident">HttpResponse</span>::<span class="prelude-val">Ok</span>()))
.<span class="ident">finish</span>();
}</pre>
</div>
<h2 id='methods' class='small-section-header'>
Methods<a href='#methods' class='anchor'></a>
</h2>
<h3 id='impl' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl&lt;S&gt; <a class="struct" href="../../actix_web/dev/struct.Resource.html" title="struct actix_web::dev::Resource">Resource</a>&lt;S&gt;</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/resource.rs.html#46-70' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.new' class="method"><span id='new.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.new' class='fnname'>new</a>(rdef: <a class="struct" href="../../actix_web/dev/struct.ResourceDef.html" title="struct actix_web::dev::ResourceDef">ResourceDef</a>) -&gt; Self</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/resource.rs.html#48-54' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Create new resource with specified resource definition</p>
</div><h4 id='method.name' class="method"><span id='name.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.name' class='fnname'>name</a>(&amp;mut self, name: &amp;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>)</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/resource.rs.html#62-64' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Set resource name</p>
</div><h4 id='method.rdef' class="method"><span id='rdef.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.rdef' class='fnname'>rdef</a>(&amp;self) -&gt; &amp;<a class="struct" href="../../actix_web/dev/struct.ResourceDef.html" title="struct actix_web::dev::ResourceDef">ResourceDef</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/resource.rs.html#67-69' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Resource definition</p>
</div></div><h3 id='impl-1' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl&lt;S:&nbsp;'static&gt; <a class="struct" href="../../actix_web/dev/struct.Resource.html" title="struct actix_web::dev::Resource">Resource</a>&lt;S&gt;</code><a href='#impl-1' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/resource.rs.html#72-300' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.route' class="method"><span id='route.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.route' class='fnname'>route</a>(&amp;mut self) -&gt; &amp;mut <a class="struct" href="../../actix_web/dev/struct.Route.html" title="struct actix_web::dev::Route">Route</a>&lt;S&gt;</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/resource.rs.html#92-95' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Register a new route and return mutable reference to <em>Route</em> object.
<em>Route</em> is used for route configuration, i.e. adding predicates,
setting up handler.</p>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">actix_web</span>::<span class="kw-2">*</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">&quot;/&quot;</span>, <span class="op">|</span><span class="ident">r</span><span class="op">|</span> {
<span class="ident">r</span>.<span class="ident">route</span>()
.<span class="ident">filter</span>(<span class="ident">pred</span>::<span class="ident">Any</span>(<span class="ident">pred</span>::<span class="ident">Get</span>()).<span class="ident">or</span>(<span class="ident">pred</span>::<span class="ident">Put</span>()))
.<span class="ident">filter</span>(<span class="ident">pred</span>::<span class="ident">Header</span>(<span class="string">&quot;Content-Type&quot;</span>, <span class="string">&quot;text/plain&quot;</span>))
.<span class="ident">f</span>(<span class="op">|</span><span class="ident">r</span><span class="op">|</span> <span class="ident">HttpResponse</span>::<span class="prelude-val">Ok</span>())
})
.<span class="ident">finish</span>();
}</pre>
</div><h4 id='method.get' class="method"><span id='get.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.get' class='fnname'>get</a>(&amp;mut self) -&gt; &amp;mut <a class="struct" href="../../actix_web/dev/struct.Route.html" title="struct actix_web::dev::Route">Route</a>&lt;S&gt;</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/resource.rs.html#98-101' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Register a new <code>GET</code> route.</p>
</div><h4 id='method.post' class="method"><span id='post.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.post' class='fnname'>post</a>(&amp;mut self) -&gt; &amp;mut <a class="struct" href="../../actix_web/dev/struct.Route.html" title="struct actix_web::dev::Route">Route</a>&lt;S&gt;</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/resource.rs.html#104-107' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Register a new <code>POST</code> route.</p>
</div><h4 id='method.put' class="method"><span id='put.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.put' class='fnname'>put</a>(&amp;mut self) -&gt; &amp;mut <a class="struct" href="../../actix_web/dev/struct.Route.html" title="struct actix_web::dev::Route">Route</a>&lt;S&gt;</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/resource.rs.html#110-113' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Register a new <code>PUT</code> route.</p>
</div><h4 id='method.delete' class="method"><span id='delete.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.delete' class='fnname'>delete</a>(&amp;mut self) -&gt; &amp;mut <a class="struct" href="../../actix_web/dev/struct.Route.html" title="struct actix_web::dev::Route">Route</a>&lt;S&gt;</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/resource.rs.html#116-119' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Register a new <code>DELETE</code> route.</p>
</div><h4 id='method.head' class="method"><span id='head.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.head' class='fnname'>head</a>(&amp;mut self) -&gt; &amp;mut <a class="struct" href="../../actix_web/dev/struct.Route.html" title="struct actix_web::dev::Route">Route</a>&lt;S&gt;</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/resource.rs.html#122-125' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Register a new <code>HEAD</code> route.</p>
</div><h4 id='method.method' class="method"><span id='method.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.method' class='fnname'>method</a>(&amp;mut self, method: <a class="struct" href="../../actix_web/http/struct.Method.html" title="struct actix_web::http::Method">Method</a>) -&gt; &amp;mut <a class="struct" href="../../actix_web/dev/struct.Route.html" title="struct actix_web::dev::Route">Route</a>&lt;S&gt;</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/resource.rs.html#145-148' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Register a new route and add method check to route.</p>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">actix_web</span>::<span class="kw-2">*</span>;
<span class="kw">fn</span> <span class="ident">index</span>(<span class="ident">req</span>: <span class="kw-2">&amp;</span><span class="ident">HttpRequest</span>) <span class="op">-&gt;</span> <span class="ident">HttpResponse</span> { <span class="macro">unimplemented</span><span class="macro">!</span>() }
<span class="ident">App</span>::<span class="ident">new</span>().<span class="ident">resource</span>(<span class="string">&quot;/&quot;</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">f</span>(<span class="ident">index</span>));</pre>
<p>This is shortcut for:</p>
<pre class="rust rust-example-rendered">
<span class="ident">App</span>::<span class="ident">new</span>().<span class="ident">resource</span>(<span class="string">&quot;/&quot;</span>, <span class="op">|</span><span class="ident">r</span><span class="op">|</span> <span class="ident">r</span>.<span class="ident">route</span>().<span class="ident">filter</span>(<span class="ident">pred</span>::<span class="ident">Get</span>()).<span class="ident">f</span>(<span class="ident">index</span>));</pre>
</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>&lt;H:&nbsp;<a class="trait" href="../../actix_web/dev/trait.Handler.html" title="trait actix_web::dev::Handler">Handler</a>&lt;S&gt;&gt;(&amp;mut self, handler: H)</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/resource.rs.html#168-171' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Register a new route and add handler object.</p>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">actix_web</span>::<span class="kw-2">*</span>;
<span class="kw">fn</span> <span class="ident">handler</span>(<span class="ident">req</span>: <span class="kw-2">&amp;</span><span class="ident">HttpRequest</span>) <span class="op">-&gt;</span> <span class="ident">HttpResponse</span> { <span class="macro">unimplemented</span><span class="macro">!</span>() }
<span class="ident">App</span>::<span class="ident">new</span>().<span class="ident">resource</span>(<span class="string">&quot;/&quot;</span>, <span class="op">|</span><span class="ident">r</span><span class="op">|</span> <span class="ident">r</span>.<span class="ident">h</span>(<span class="ident">handler</span>));</pre>
<p>This is shortcut for:</p>
<pre class="rust rust-example-rendered">
<span class="ident">App</span>::<span class="ident">new</span>().<span class="ident">resource</span>(<span class="string">&quot;/&quot;</span>, <span class="op">|</span><span class="ident">r</span><span class="op">|</span> <span class="ident">r</span>.<span class="ident">route</span>().<span class="ident">h</span>(<span class="ident">handler</span>));</pre>
</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>&lt;F, R&gt;(&amp;mut self, handler: F) <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;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>(&amp;<a class="struct" href="../../actix_web/struct.HttpRequest.html" title="struct actix_web::HttpRequest">HttpRequest</a>&lt;S&gt;) -&gt; R + 'static,<br>&nbsp;&nbsp;&nbsp;&nbsp;R: <a class="trait" href="../../actix_web/trait.Responder.html" title="trait actix_web::Responder">Responder</a> + 'static,&nbsp;</span></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/resource.rs.html#191-198' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Register a new route and add handler function.</p>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">actix_web</span>::<span class="kw-2">*</span>;
<span class="kw">fn</span> <span class="ident">index</span>(<span class="ident">req</span>: <span class="kw-2">&amp;</span><span class="ident">HttpRequest</span>) <span class="op">-&gt;</span> <span class="ident">HttpResponse</span> { <span class="macro">unimplemented</span><span class="macro">!</span>() }
<span class="ident">App</span>::<span class="ident">new</span>().<span class="ident">resource</span>(<span class="string">&quot;/&quot;</span>, <span class="op">|</span><span class="ident">r</span><span class="op">|</span> <span class="ident">r</span>.<span class="ident">f</span>(<span class="ident">index</span>));</pre>
<p>This is shortcut for:</p>
<pre class="rust rust-example-rendered">
<span class="ident">App</span>::<span class="ident">new</span>().<span class="ident">resource</span>(<span class="string">&quot;/&quot;</span>, <span class="op">|</span><span class="ident">r</span><span class="op">|</span> <span class="ident">r</span>.<span class="ident">route</span>().<span class="ident">f</span>(<span class="ident">index</span>));</pre>
</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>&lt;T, F, R&gt;(&amp;mut self, handler: F) <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;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) -&gt; R + 'static,<br>&nbsp;&nbsp;&nbsp;&nbsp;R: <a class="trait" href="../../actix_web/trait.Responder.html" title="trait actix_web::Responder">Responder</a> + 'static,<br>&nbsp;&nbsp;&nbsp;&nbsp;T: <a class="trait" href="../../actix_web/trait.FromRequest.html" title="trait actix_web::FromRequest">FromRequest</a>&lt;S&gt; + 'static,&nbsp;</span></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/resource.rs.html#218-226' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Register a new route and add handler.</p>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">actix_web</span>::<span class="kw-2">*</span>;
<span class="kw">fn</span> <span class="ident">index</span>(<span class="ident">req</span>: <span class="ident">HttpRequest</span>) <span class="op">-&gt;</span> <span class="ident">HttpResponse</span> { <span class="macro">unimplemented</span><span class="macro">!</span>() }
<span class="ident">App</span>::<span class="ident">new</span>().<span class="ident">resource</span>(<span class="string">&quot;/&quot;</span>, <span class="op">|</span><span class="ident">r</span><span class="op">|</span> <span class="ident">r</span>.<span class="ident">with</span>(<span class="ident">index</span>));</pre>
<p>This is shortcut for:</p>
<pre class="rust rust-example-rendered">
<span class="ident">App</span>::<span class="ident">new</span>().<span class="ident">resource</span>(<span class="string">&quot;/&quot;</span>, <span class="op">|</span><span class="ident">r</span><span class="op">|</span> <span class="ident">r</span>.<span class="ident">route</span>().<span class="ident">with</span>(<span class="ident">index</span>));</pre>
</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>&lt;T, F, R, I, E&gt;(&amp;mut self, handler: F) <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;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) -&gt; R + 'static,<br>&nbsp;&nbsp;&nbsp;&nbsp;R: <a class="trait" href="https://docs.rs/futures/0.1/futures/future/trait.Future.html" title="trait futures::future::Future">Future</a>&lt;Item = I, Error = E&gt; + 'static,<br>&nbsp;&nbsp;&nbsp;&nbsp;I: <a class="trait" href="../../actix_web/trait.Responder.html" title="trait actix_web::Responder">Responder</a> + 'static,<br>&nbsp;&nbsp;&nbsp;&nbsp;E: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;<a class="struct" href="../../actix_web/error/struct.Error.html" title="struct actix_web::error::Error">Error</a>&gt; + 'static,<br>&nbsp;&nbsp;&nbsp;&nbsp;T: <a class="trait" href="../../actix_web/trait.FromRequest.html" title="trait actix_web::FromRequest">FromRequest</a>&lt;S&gt; + 'static,&nbsp;</span></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/resource.rs.html#255-265' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Register a new route and add async handler.</p>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">actix_web</span>::<span class="kw-2">*</span>;
<span class="kw">use</span> <span class="ident">futures</span>::<span class="ident">future</span>::<span class="ident">Future</span>;
<span class="kw">fn</span> <span class="ident">index</span>(<span class="ident">req</span>: <span class="ident">HttpRequest</span>) <span class="op">-&gt;</span> <span class="ident">Box</span><span class="op">&lt;</span><span class="ident">Future</span><span class="op">&lt;</span><span class="ident">Item</span><span class="op">=</span><span class="ident">HttpResponse</span>, <span class="ident">Error</span><span class="op">=</span><span class="ident">Error</span><span class="op">&gt;&gt;</span> {
<span class="macro">unimplemented</span><span class="macro">!</span>()
}
<span class="ident">App</span>::<span class="ident">new</span>().<span class="ident">resource</span>(<span class="string">&quot;/&quot;</span>, <span class="op">|</span><span class="ident">r</span><span class="op">|</span> <span class="ident">r</span>.<span class="ident">with_async</span>(<span class="ident">index</span>));</pre>
<p>This is shortcut for:</p>
<pre class="rust rust-example-rendered">
<span class="ident">App</span>::<span class="ident">new</span>().<span class="ident">resource</span>(<span class="string">&quot;/&quot;</span>, <span class="op">|</span><span class="ident">r</span><span class="op">|</span> <span class="ident">r</span>.<span class="ident">route</span>().<span class="ident">with_async</span>(<span class="ident">index</span>));</pre>
</div><h4 id='method.middleware' class="method"><span id='middleware.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.middleware' class='fnname'>middleware</a>&lt;M:&nbsp;<a class="trait" href="../../actix_web/middleware/trait.Middleware.html" title="trait actix_web::middleware::Middleware">Middleware</a>&lt;S&gt;&gt;(&amp;mut self, mw: M)</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/resource.rs.html#274-278' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Register a resource middleware</p>
<p>This is similar to <code>App's</code> middlewares, but
middlewares get invoked on resource level.</p>
<p><em>Note</em> <code>Middleware::finish()</code> fires right after response get
prepared. It does not wait until body get sent to peer.</p>
</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&lt;S&nbsp;=&nbsp;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>&gt; !<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.Resource.html" title="struct actix_web::dev::Resource">Resource</a>&lt;S&gt;</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&lt;S&nbsp;=&nbsp;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>&gt; !<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.Resource.html" title="struct actix_web::dev::Resource">Resource</a>&lt;S&gt;</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>&#9166;</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>