314 lines
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314 lines
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<ol class="chapter"><li class="chapter-item expanded affix "><a href="../../index.html">Introduction</a></li><li class="chapter-item expanded affix "><li class="part-title">Features</li><li class="chapter-item expanded "><a href="../../features/index.html"><strong aria-hidden="true">1.</strong> Adding the Router to Your Application</a></li><li class="chapter-item expanded "><a href="../../features/routes/index.html"><strong aria-hidden="true">2.</strong> Defining Routes</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../features/routes/nested.html"><strong aria-hidden="true">2.1.</strong> Nested Routes</a></li><li class="chapter-item expanded "><a href="../../features/routes/catch_all.html"><strong aria-hidden="true">2.2.</strong> Catch All Routes</a></li><li class="chapter-item expanded "><a href="../../features/routes/matching.html"><strong aria-hidden="true">2.3.</strong> Matching Routes</a></li><li class="chapter-item expanded "><a href="../../features/routes/fallback.html"><strong aria-hidden="true">2.4.</strong> Fallback Routes (404 page)</a></li><li class="chapter-item expanded "><a href="../../features/routes/multiple-and-redirect.html"><strong aria-hidden="true">2.5.</strong> Multiple Components & Redirects</a></li></ol></li><li class="chapter-item expanded "><a href="../../features/outlets.html"><strong aria-hidden="true">3.</strong> Outlets</a></li><li class="chapter-item expanded "><a href="../../features/navigation/index.html"><strong aria-hidden="true">4.</strong> Links & Navigation</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../features/navigation/name.html" class="active"><strong aria-hidden="true">4.1.</strong> Named Navigation</a></li><li class="chapter-item expanded "><a href="../../features/navigation/external.html"><strong aria-hidden="true">4.2.</strong> External Navigation</a></li><li class="chapter-item expanded "><a href="../../features/navigation/programmatic.html"><strong aria-hidden="true">4.3.</strong> Programmatic Navigation</a></li></ol></li><li class="chapter-item expanded "><a href="../../features/query.html"><strong aria-hidden="true">5.</strong> Query</a></li><li class="chapter-item expanded "><a href="../../features/failures/index.html"><strong aria-hidden="true">6.</strong> Navigation Failures</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../features/failures/named.html"><strong aria-hidden="true">6.1.</strong> Named Navigation Failure</a></li><li class="chapter-item expanded "><a href="../../features/failures/external.html"><strong aria-hidden="true">6.2.</strong> External Navigation Failure</a></li><li class="chapter-item expanded "><a href="../../features/failures/redirection-limit.html"><strong aria-hidden="true">6.3.</strong> Redirection Limit Failure</a></li></ol></li><li class="chapter-item expanded "><a href="../../features/history-providers.html"><strong aria-hidden="true">7.</strong> History Providers</a></li><li class="chapter-item expanded "><a href="../../features/history-buttons.html"><strong aria-hidden="true">8.</strong> History Buttons</a></li><li class="chapter-item expanded "><a href="../../features/sitemap-generation.html"><strong aria-hidden="true">9.</strong> Sitemap Generation</a></li><li class="chapter-item expanded "><a href="../../features/routing-update-callback.html"><strong aria-hidden="true">10.</strong> Routing Update Callback</a></li><li class="chapter-item expanded affix "><li class="part-title">Example Project</li><li class="chapter-item expanded "><a href="../../example/index.html"><strong aria-hidden="true">11.</strong> Overview</a></li><li class="chapter-item expanded "><a href="../../example/first-route.html"><strong aria-hidden="true">12.</strong> Creating Our First Route</a></li><li class="chapter-item expanded "><a href="../../example/building-a-nest.html"><strong aria-hidden="true">13.</strong> Building a Nest</a></li><li class="chapter-item expanded "><a href="../../example/navigation-targets.html"><strong aria-hidden="true">14.</strong> Navigation Targets</a></li><li class="chapter-item expanded "><a href="../../example/redirection-perfection.html"><strong aria-hidden="true">15.</strong> Redirection Perfection</a></li><li class="chapter-item expanded "><a href="../../example/full-code.html"><strong aria-hidden="true">16.</strong> Full Code</a></li></ol>
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<h1 class="menu-title">Dioxus Router</h1>
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<main>
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<h1 id="named-navigation"><a class="header" href="#named-navigation">Named Navigation</a></h1>
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<p>When creating large applications, it can become difficult to keep track of all
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routes and how to navigate to them. It also can be hard to find all links to
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them, which makes it difficult to change paths.</p>
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<p>To solve these problems, the router implements named navigation. When we define
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our routes we can give them arbitrary, unique names (completely independent from
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the path) and later ask the router to navigate to those names. The router will
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automatically create the actual path to navigate to, even inserting required
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parameters.</p>
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<p><em>Named</em> navigation has a few advantages over <em>path-based</em> navigation:</p>
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<ul>
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<li>Links can be created without knowing the actual path.</li>
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<li>It is much easier to find all links to a specific route.</li>
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<li>The router knows what links are invalid (and will panic in debug builds).</li>
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</ul>
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<blockquote>
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<p>When the router encounters an invalid link in a release build, it has to
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handle that problem. You can hook into that process, to display a custom error
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message. See the chapter about
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<a href="../failures/named.html">named navigation failures</a>.</p>
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</blockquote>
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<blockquote>
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<p>The router will automatically define the name <a href="https://docs.rs/dioxus-router-core/latest/dioxus_router_core/prelude/struct.RootIndex.html"><code>RootIndex</code></a> to refer to the
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root index route (<code>/</code>).</p>
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<p>It will also add other names (all of them are in the prelude module) in
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certain conditions. None of these names can be used for app defined routes.</p>
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</blockquote>
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<h2 id="code-example"><a class="header" href="#code-example">Code Example</a></h2>
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<pre><pre class="playground"><code class="language-rust edition2021">
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<span class="boring">#![allow(unused)]
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</span><span class="boring">fn main() {
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</span><span class="boring">// Hidden lines (like this one) make the documentation tests work.
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</span><span class="boring">extern crate dioxus;
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</span>use dioxus::prelude::*;
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<span class="boring">extern crate dioxus_router;
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</span>use dioxus_router::prelude::*;
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<span class="boring">extern crate dioxus_ssr;
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</span>
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// we define a unit struct which will serve as our name
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struct TargetName;
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fn Source(cx: Scope) -> Element {
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render! {
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Link {
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// instead of InternalTarget we use NamedTarget (via the `named` fn)
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// we can use the returned value to add parameters or a query
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target: named::<TargetName>().query("query"),
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"Go to target"
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}
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}
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}
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fn Target(cx: Scope) -> Element {
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render! {
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h1 { "Target" }
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}
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}
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fn App(cx: Scope) -> Element {
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use_router(
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cx,
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&|| RouterConfiguration {
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<span class="boring"> synchronous: true,
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</span> ..Default::default()
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},
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&|| {
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Segment::content(comp(Source))
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.fixed(
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"target_path",
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Route::content(comp(Target)).name::<TargetName>()
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)
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}
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);
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render! {
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Outlet { }
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}
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}
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<span class="boring">
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</span><span class="boring">let mut vdom = VirtualDom::new(App);
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</span><span class="boring">vdom.rebuild();
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</span><span class="boring">let html = dioxus_ssr::render(&vdom);
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</span><span class="boring">assert_eq!(
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</span><span class="boring"> html,
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</span><span class="boring"> format!(
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</span><span class="boring"> "<a {attr1} {attr2}>Go to target</a>",
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</span><span class="boring"> attr1 = r#"href="/target_path?query" dioxus-prevent-default="onclick""#,
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</span><span class="boring"> attr2 = r#"class="" id="" rel="" target="""#
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</span><span class="boring"> )
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</span><span class="boring">)
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</span><span class="boring">}
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</span></code></pre></pre>
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<h2 id="check-if-a-name-is-present"><a class="header" href="#check-if-a-name-is-present">Check if a name is present</a></h2>
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<p>You can check if a specific name is present for the current route. This works
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similar to getting the value of a <a href="../routes/parameter.html">parameter route</a> and
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the same restrictions apply.</p>
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<pre><pre class="playground"><code class="language-rust no_run edition2021">
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<span class="boring">#![allow(unused)]
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</span><span class="boring">fn main() {
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</span><span class="boring">// Hidden lines (like this one) make the documentation tests work.
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</span><span class="boring">extern crate dioxus;
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</span>use dioxus::prelude::*;
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<span class="boring">extern crate dioxus_router;
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</span>use dioxus_router::prelude::*;
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struct SomeName;
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fn Content(cx: Scope) -> Element {
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let route = use_route(cx).expect("needs to be in router");
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if route.is_at(&named::<SomeName>(), false) {
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// do something
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}
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// ...
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<span class="boring"> todo!()
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</span>}
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<span class="boring">}
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</span></code></pre></pre>
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