Evan Almloff
d8d11db403
This PR contains just the breaking changes required for the upcoming store implementation. It adds two new primitives: Mutable mapped signals (without a different subscriber list). This lets you scope a writable value and pass it to a child component. It requires two closures to map the immutable and mutable references to the inner signal. With stores, these closures will be derived Boxed readable and writable values (ReadSignal, and WriteSignal). Any readable or writable types can be converted to a read signal or write signal with the boxed method or built in types are automatically converted into the boxed variants when passing into props * map signals mutably * boxed signals * remove mutable borrow type from boxed writable * improve map mut example * restore boxed_mut helper * make boxed readable/writable types copy * Move away from the ReadOnlySignal alias in examples * automatically convert Write * Fix some tests * ReadSignal and WriteSignal * move read only signal alias * make maps copy * store prototype * implement derive macro * Handle generics in the derive macro * Make Selector boxable * derive boxed conversion * Get rid of store type * Remove hardcoded type from derive macro * selector -> store * Refactor store implementation * more vec methods * todo mvc store example * Implement Storable for HashMap * fix write * restore sorting logic in todomvc * derive readable and writable * improve todomvc store example * Result store * Option store * collect dead subscribers * fix clippy and formatting * recognize some common foreign types automatically * fix foreign stores in props * slice and array selectors * clean up store example * remove stores * writable is child owned * fix typo * fix clippy * fix doc tests
118 lines
3.6 KiB
Rust
118 lines
3.6 KiB
Rust
//! This example shows how to access and use query segments present in an url on the web.
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//!
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//! The enum router makes it easy to use your route as state in your app. This example shows how to use the router to encode search text into the url and decode it back into a string.
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//!
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//! Run this example on desktop with
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//! ```sh
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//! dx serve --example query_segment_search
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//! ```
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//! Or on web with
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//! ```sh
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//! dx serve --platform web --features web --example query_segment_search -- --no-default-features
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//! ```
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use dioxus::prelude::*;
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fn main() {
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dioxus::launch(|| {
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rsx! {
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Router::<Route> {}
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}
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});
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}
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#[derive(Routable, Clone, Debug, PartialEq)]
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#[rustfmt::skip]
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enum Route {
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#[route("/")]
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Home {},
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// The each query segment must implement <https://docs.rs/dioxus-router/latest/dioxus_router/routable/trait.FromQueryArgument.html> and Display.
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// You can use multiple query segments separated by `&`s.
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#[route("/search?:query&:word_count")]
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Search {
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query: String,
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word_count: usize,
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},
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}
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#[component]
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fn Home() -> Element {
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// Display a list of example searches in the home page
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rsx! {
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ul {
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li {
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Link {
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to: Route::Search {
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query: "hello".to_string(),
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word_count: 1
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},
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"Search for results containing 'hello' and at least one word"
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}
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}
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li {
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Link {
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to: Route::Search {
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query: "dioxus".to_string(),
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word_count: 2
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},
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"Search for results containing 'dioxus' and at least two word"
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}
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}
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}
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}
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}
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// Instead of accepting String and usize directly, we use ReadSignal to make the parameters `Copy` and let us subscribe to them automatically inside the meme
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#[component]
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fn Search(query: ReadSignal<String>, word_count: ReadSignal<usize>) -> Element {
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const ITEMS: &[&str] = &[
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"hello",
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"world",
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"hello world",
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"hello dioxus",
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"hello dioxus-router",
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];
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// Find all results that contain the query and the right number of words
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// This memo will automatically rerun when the query or word count changes because we read the signals inside the closure
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let results = use_memo(move || {
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ITEMS
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.iter()
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.filter(|item| {
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item.contains(&*query.read()) && item.split_whitespace().count() >= word_count()
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})
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.collect::<Vec<_>>()
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});
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rsx! {
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h1 { "Search for {query}" }
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input {
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oninput: move |e| {
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// Every time the query changes, we change the current route to the new query
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navigator().replace(Route::Search {
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query: e.value(),
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word_count: word_count(),
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});
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},
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value: "{query}",
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}
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input {
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r#type: "number",
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oninput: move |e| {
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// Every time the word count changes, we change the current route to the new query
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if let Ok(word_count) = e.value().parse() {
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navigator().replace(Route::Search {
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query: query(),
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word_count,
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});
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}
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},
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value: "{word_count}",
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}
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for result in results.read().iter() {
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div { "{result}" }
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}
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}
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}
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