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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 "><a href="../getting_started/index.html"><strong aria-hidden="true">1.</strong> Getting Started</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../getting_started/desktop.html"><strong aria-hidden="true">1.1.</strong> Desktop</a></li><li class="chapter-item expanded "><a href="../getting_started/web.html"><strong aria-hidden="true">1.2.</strong> Web</a></li><li class="chapter-item expanded "><a href="../getting_started/ssr.html"><strong aria-hidden="true">1.3.</strong> Server-Side Rendering</a></li><li class="chapter-item expanded "><a href="../getting_started/fullstack.html"><strong aria-hidden="true">1.4.</strong> Fullstack</a></li><li class="chapter-item expanded "><a href="../getting_started/liveview.html"><strong aria-hidden="true">1.5.</strong> Liveview</a></li><li class="chapter-item expanded "><a href="../getting_started/tui.html"><strong aria-hidden="true">1.6.</strong> Terminal UI</a></li><li class="chapter-item expanded "><a href="../getting_started/mobile.html"><strong aria-hidden="true">1.7.</strong> Mobile</a></li><li class="chapter-item expanded "><a href="../getting_started/hot_reload.html"><strong aria-hidden="true">1.8.</strong> Hot Reloading</a></li></ol></li><li class="chapter-item expanded "><a href="../describing_ui/index.html"><strong aria-hidden="true">2.</strong> Describing the UI</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../describing_ui/special_attributes.html"><strong aria-hidden="true">2.1.</strong> Special Attributes</a></li><li class="chapter-item expanded "><a href="../describing_ui/components.html"><strong aria-hidden="true">2.2.</strong> Components</a></li><li class="chapter-item expanded "><a href="../describing_ui/component_props.html"><strong aria-hidden="true">2.3.</strong> Props</a></li><li class="chapter-item expanded "><a href="../describing_ui/component_children.html" class="active"><strong aria-hidden="true">2.4.</strong> Component Children</a></li></ol></li><li class="chapter-item expanded "><a href="../interactivity/index.html"><strong aria-hidden="true">3.</strong> Interactivity</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../interactivity/event_handlers.html"><strong aria-hidden="true">3.1.</strong> Event Listeners</a></li><li class="chapter-item expanded "><a href="../interactivity/hooks.html"><strong aria-hidden="true">3.2.</strong> Hooks & Component State</a></li><li class="chapter-item expanded "><a href="../interactivity/user_input.html"><strong aria-hidden="true">3.3.</strong> User Input</a></li><li class="chapter-item expanded "><a href="../interactivity/sharing_state.html"><strong aria-hidden="true">3.4.</strong> Sharing State</a></li><li class="chapter-item expanded "><a href="../interactivity/custom_hooks.html"><strong aria-hidden="true">3.5.</strong> Custom Hooks</a></li><li class="chapter-item expanded "><a href="../interactivity/dynamic_rendering.html"><strong aria-hidden="true">3.6.</strong> Dynamic Rendering</a></li><li class="chapter-item expanded "><a href="../interactivity/router.html"><strong aria-hidden="true">3.7.</strong> Routing</a></li></ol></li><li class="chapter-item expanded "><a href="../async/index.html"><strong aria-hidden="true">4.</strong> Async</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../async/use_future.html"><strong aria-hidden="true">4.1.</strong> UseFuture</a></li><li class="chapter-item expanded "><a href="../async/use_coroutine.html"><strong aria-hidden="true">4.2.</strong> UseCoroutine</a></li><li class="chapter-item expanded "><a href="../async/spawn.html"><strong aria-hidden="true">4.3.</strong> Spawning Futures</a></li></ol></li><li class="chapter-item expanded "><a href="../best_practices/index.html"><strong aria-hidden="true">5.</strong> Best Practices</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../best_practices/error_handling.html"><strong aria-hidden="true">5.1.</strong> Error Handling</a></li><li class="chapter-item expanded "><a href="../best_practices/antipatterns.html"><strong aria-hidden="true">5.2.</strong> Antipatterns</a></li></ol></li><li class="chapter-item expanded "><a href="../publishing/index.html"><strong aria-hidden="true">6.</strong> Publishing</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../publishing/desktop.html"><strong aria-hidden="true">6.1.</strong> Desktop</a></li><li class="chapter-item expanded "><a href="../publishing/web.html"><strong aria-hidden="true">6.2.</strong> Web</a></li><li class="spacer"></li></ol></li><li class="chapter-item expanded "><a href="../fullstack/index.html"><strong aria-hidden="true">7.</strong> Fullstack</a></li><li><ol class="section"><li class="chapter-item expanded 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<h1 id="component-children"><a class="header" href="#component-children">Component Children</a></h1>
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<p>In some cases, you may wish to create a component that acts as a container for some other content, without the component needing to know what that content is. To achieve this, create a prop of type <code>Element</code>:</p>
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<pre><pre class="playground"><code class="language-rust edition2018">
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<span class="boring">#![allow(unused)]
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</span><span class="boring">fn main() {
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</span>#[derive(Props)]
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struct ClickableProps<'a> {
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href: &'a str,
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body: Element<'a>,
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}
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fn Clickable<'a>(cx: Scope<'a, ClickableProps<'a>>) -> Element {
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cx.render(rsx!(
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a {
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href: "{cx.props.href}",
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class: "fancy-button",
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&cx.props.body
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}
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))
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}
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<span class="boring">}
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</span></code></pre></pre>
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<p>Then, when rendering the component, you can pass in the output of <code>cx.render(rsx!(...))</code>:</p>
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<pre><pre class="playground"><code class="language-rust edition2018">
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<span class="boring">#![allow(unused)]
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</span><span class="boring">fn main() {
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</span> cx.render(rsx! {
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Clickable {
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href: "https://www.youtube.com/watch?v=C-M2hs3sXGo",
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body: cx.render(rsx!("How to " i {"not"} " be seen")),
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}
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})
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<span class="boring">}
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</span></code></pre></pre>
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<blockquote>
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<p>Note: Since <code>Element<'a></code> is a borrowed prop, there will be no memoization.</p>
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</blockquote>
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<blockquote>
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<p>Warning: While it may compile, do not include the same <code>Element</code> more than once in the RSX. The resulting behavior is unspecified.</p>
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</blockquote>
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<h2 id="the-children-field"><a class="header" href="#the-children-field">The <code>children</code> field</a></h2>
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<p>Rather than passing the RSX through a regular prop, you may wish to accept children similarly to how elements can have children. The "magic" <code>children</code> prop lets you achieve this:</p>
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<pre><pre class="playground"><code class="language-rust edition2018">
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<span class="boring">#![allow(unused)]
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</span><span class="boring">fn main() {
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</span>#[derive(Props)]
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struct ClickableProps<'a> {
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href: &'a str,
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children: Element<'a>,
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}
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fn Clickable<'a>(cx: Scope<'a, ClickableProps<'a>>) -> Element {
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cx.render(rsx!(
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a {
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href: "{cx.props.href}",
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class: "fancy-button",
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&cx.props.children
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}
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))
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}
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<span class="boring">}
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</span></code></pre></pre>
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<p>This makes using the component much simpler: simply put the RSX inside the <code>{}</code> brackets – and there is no need for a <code>render</code> call or another macro!</p>
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<pre><pre class="playground"><code class="language-rust edition2018">
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<span class="boring">#![allow(unused)]
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</span><span class="boring">fn main() {
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</span> cx.render(rsx! {
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Clickable {
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href: "https://www.youtube.com/watch?v=C-M2hs3sXGo",
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"How to " i {"not"} " be seen"
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}
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})
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<span class="boring">}
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</span></code></pre></pre>
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