Dioxus Framework

Dioxus 是一个 Rust 的全栈跨平台应用框架,支持服务端渲染、实时更新和类似 React 的组件模型。当用户需要使用 Dioxus 构建 Web 应用、创建组件、处理状态、路由、或处理数据获取时使用。

MIT-0 · Free to use, modify, and redistribute. No attribution required.
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Purpose & Capability
Name/description describe a Dioxus teaching / helper skill and the files are documentation, templates, and examples for building Dioxus apps. There are no extraneous required binaries, env vars, or config paths that conflict with the stated purpose. Note: the skill's source/homepage are unknown in the registry metadata (documentation is present but upstream provenance is not provided).
Instruction Scope
SKILL.md contains build/run guidance, example code, and commands (cargo add, cargo install, dioxus serve) directly related to developing and running Dioxus apps. It does not instruct the agent to read unrelated system files, export secrets, or contact external endpoints beyond normal package installs and dev servers.
Install Mechanism
There is no install spec (instruction-only), so nothing is written to disk by the platform. The guidance suggests running standard cargo/dioxus-cli commands which is expected for this purpose.
Credentials
The skill declares no environment variables, credentials, or config paths. The examples and templates use only local project files and standard Rust tooling, which is proportionate to the described functionality.
Persistence & Privilege
always is false and the skill requires no special privileges or persistent system changes. It does not request to modify other skills or global agent settings.
Assessment
This skill is documentation and example templates for the Dioxus Rust framework and appears internally consistent. Before running any commands it suggests: (1) verify Dioxus and dioxus-cli come from the official crates.io or upstream project, (2) avoid running unreviewed shell snippets from unknown sources, (3) prefer reviewing the Cargo.toml / code templates locally before building, and (4) if you need higher assurance, look for an official homepage or repository (none is listed) or consult the upstream Dioxus docs. Otherwise the skill itself does not request secrets or perform suspicious actions.

Like a lobster shell, security has layers — review code before you run it.

Current versionv1.0.0
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License

MIT-0
Free to use, modify, and redistribute. No attribution required.

SKILL.md

Dioxus Framework

Dioxus 是一个现代 Rust Web 框架,结合了 React 的编程模型与 Rust 的性能优势。它允许你构建高性能的 Web 应用,支持服务端渲染(SSR)、实时更新和跨平台部署。

快速开始

安装依赖

# 在 Rust 项目中添加 Dioxus
cargo add dioxus --features ssr

# 使用 CLI 工具
cargo install dioxus-cli

基本项目结构

src/
├── main.rs           # 应用入口
├── App.rsx           # 根组件
├── components/        # 子组件目录
├── routes/            # 路由模块
├── server_fn/         # 服务端函数
└── utils/             # 工具函数

组件基础

定义组件

组件是使用 #[component] 宏定义的函数,它接受 Properties(props)并返回一个 Element

use dioxus::prelude::*;

#[component]
fn DogApp(breed: String) -> Element {
    rsx! {
        div { class: "card" } {
            h2 { "Dogs of breed: {breed}" }
            ul {
                (0..3).map(|i| rsx! {
                    li { "Dog {i}" }
                })
            }
        }
    }
}

Component Properties

所有组件都接受一个描述其参数的 struct。Props 需要 derive 以下 traits:

#[derive(Props, PartialEq, Clone)]
struct DogAppProps {
    breed: String,
}

重要特性:

特性说明
Props组件接受的参数对象
PartialEqual允许部分更新 props
Clone允许克隆 props
Memoized默认 memoized,只有 props 改变时重新渲染

组件生命周期

Dioxus 组件会在以下情况下重新渲染:

  1. Props 改变:当组件的 props 发生变化时
  2. 信号变化:当组件监听的信号更新时
  3. Scope.needs_update():当父组件要求更新时

重要: Dioxus 默认 memoized 所有组件,性能比 React 更好。

状态管理

使用 Hooks

Dioxus 提供类似 React 的 hooks 用于管理状态。

use_signal()

创建响应式状态:

#[component]
fn Counter() -> Element {
    let mut count = use_signal(cx, || 0);

    rsx! {
        div {
            button {
                onclick: move |_| {
                    count += 1;
                }
            } { "Increment" }
            p { "Count: {count}" }
            button {
                onclick: move |_| {
                    count -= 1;
                }
            } { "Decrement" }
        }
    }
}

use_coroutine()

运行异步操作:

#[component]
fn DataFetcher() -> Element {
    let mut data = use_signal(cx, || None::<String>);
    let loading = use_signal(cx, || false);

    use_coroutine(cx, |cx| async move {
        loading.set(true);
        // 模拟异步数据获取
        tokio::time::sleep(Duration::from_secs(2)).await;
        data.set(Some("Fetched data".to_string()));
        loading.set(false);
    });

    rsx! {
        div {
            if *loading.get() {
                p { "Loading..." }
            } else if let Some(d) = data.get() {
                p { "Data: {d}" }
            } else {
                p { "No data yet" }
            }
        }
    }
}

use_context()

访问上下文值:

#[derive(Clone, Props)]
struct ChildProps {
    value: String,
}

#[component]
fn Child(props: ChildProps) -> Element {
    rsx! { p { "Value from context: {props.value}" } }
}

#[component]
fn Parent() -> Element {
    let value = use_context(cx, || "default".to_string());
    rsx! { Child { value: value.clone() } }
}

全局状态

使用信号进行全局状态管理:

// main.rs
use dioxus::prelude::*;

fn main() {
    let theme_signal = RwSignal::new("light".to_string());
    dioxus::launch(App, (
        AppContext::new(theme_signal)
    ));
}

// App.rsx
#[component]
fn App() -> Element {
    let theme = use_context(cx);
    rsx! {
        div {
            button {
                onclick: move |_| theme.set("dark".to_string())
            } { "Dark Mode" }
            button {
                onclick: move |_| theme.set("light".to_string())
            } { "Light Mode" }
            p { "Current theme: {theme.read()}" }
        }
    }
}

路由

基本路由

// routes/mod.rs
use dioxus::prelude::*;
use dioxus::router::{Route, Router};

#[component]
fn Home() -> Element {
    rsx! { h1 { "Home Page" } }
}

#[component]
fn About() -> Element {
    rsx! { h1 { "About Page" } }
}

// App.rsx
#[component]
fn App() -> Element {
    rsx! {
        Router {
            Route { to: "/", Home {} }
            Route { to: "/about", About {} }
        }
    }
}

动态路由

use dioxus::router::NavLink;

rsx! {
    nav {
        ul {
            li { NavLink { to: "/" } { "Home" } }
            li { NavLink { to: "/about" } { "About" } }
        }
    }
}

表单处理

#[derive(Props, Clone)]
struct FormProps {
    on_submit: Callback<String>,
}

#[component]
fn Form(props: FormProps) -> Element {
    let mut name = use_signal(cx, || String::new());
    let mut email = use_signal(cx, || String::new());

    rsx! {
        form {
            onsubmit: move |event| {
                event.prevent_default();
                props.on_submit.call((
                    name.get().clone(),
                    email.get().clone(),
                ));
            }
        } {
            input {
                r#type: "text",
                value: "{name}",
                oninput: move |e| name.set(e.value())
            }
            input {
                r#type: "email",
                value: "{email}",
                oninput: move |e| email.set(e.value())
            }
            button { r#type: "submit" } { "Submit" }
        }
    }
}

服务端渲染(SSR)

启用 SSR

// main.rs
use dioxus::prelude::*;

fn main() {
    // 启用 SSR 功能
    dioxus::launch(App);
}

// server_fn/api.rs
use dioxus::prelude::*;

#[server_fn("/")]
async fn serve_home() -> String {
    // 渲染组件为字符串
    render_to_string(|cx| rsx! { App {} })
}

服务端函数(Server Functions)

use dioxus::prelude::*;

#[server_fn("/api/hello")]
async fn hello(name: String) -> String {
    format!("Hello, {}!", name)
}

数据获取

使用资源

#[server_fn("/api/data")]
async fn fetch_data() -> Json<Vec<String>> {
    use crate::data::fetch_from_db().await
}

常见模式

条件渲染

rsx! {
    div {
        if *count.get() > 0 {
            p { "Count is positive" }
        } else {
            p { "Count is zero" }
        }
    }
}

列表渲染

let items = vec!["Item 1", "Item 2", "Item 3"];

rsx! {
    ul {
        items.iter().map(|item| rsx! {
            li { key: "{item}" } { item }
        })
    }
}

组件组合

#[component]
fn Header() -> Element {
    rsx! {
        header {
            h1 { "My App" }
            nav {
                a { href: "/" } { "Home" }
                a { href: "/about" } { "About" }
            }
        }
    }
}

#[component]
fn PageLayout(content: Element) -> Element {
    rsx! {
        div { class: "layout" } {
            Header {}
            main { content }
            Footer {}
        }
    }
}

样式和资源

CSS 模块

// 在 main.rs 或组件中导入样式
use dioxus::prelude::*;

// styles.css
.card {
    background-color: white;
    padding: 1rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

内联样式

rsx! {
    div {
        style: "background-color: #f0f0f0; padding: 1rem;" {
            "Content"
        }
    }
}

Tailwind CSS 集成

// Cargo.toml
[dependencies]
dioxus = { version = "0.7", features = ["fullstack"] }

// 在组件中使用
rsx! {
    div { class: "bg-blue-500 text-white p-4 rounded" } {
        "Styled"
    }
}

错误处理

错误边界

#[component]
fn ErrorBoundary() -> Element {
    rsx! {
        div {
            p { "Something went wrong!" }
            button {
                onclick: move |_| {
                    // 重试逻辑
                }
            } { "Retry" }
        }
    }
}

验证 Props

#[component]
fn ValidatedInput(props: ValidatedInputProps) -> Element {
    rsx! {
        input {
            value: "{props.value}",
            r#type: props.input_type,
            disabled: props.disabled,
        }
    }
}

性能优化

Memoization

Dioxus 默认 memoized 所有组件。对于昂贵的计算,可以使用 use_memo

use dioxus::hooks::*;

#[component]
fn ExpensiveCalculation() -> Element {
    let count = use_signal(cx, || 0);

    let result = use_memo(cx, move || {
        // 昂贵的计算
        expensive_calculation(*count)
    }, (*count));

    rsx! {
        div {
            p { "Result: {result}" }
        }
    }
}

避免不必要的重新渲染

使用 PartialEqualuse_memo 来最小化重新渲染。

测试

组件测试

#[cfg(test)]
mod tests {
    use super::*;
    use dioxus::prelude::*;

    #[test]
    fn test_dog_app_renders() {
        let breed = "Golden Retriever".to_string();
        let vnode = dioxus::ssr::render_to_string(|cx| rsx! {
            DogApp { breed: breed.clone() }
        });
        assert!(vnode.contains(&breed));
    }
}

部署

静态构建

cargo build --release

使用 Tauri 打包

cargo install tauri-cli
tauri build

使用 Docker

FROM rust:1.70-slim
WORKDIR /app
COPY . .
RUN cargo build --release
CMD ["./target/release/my-app"]

参考资料

详细文档和更多示例,请参考:

常见问题

Q: 如何处理异步操作?

A: 使用 use_coroutine hook 来运行异步代码并更新状态。

Q: 如何传递数据到子组件?

A: 使用 props 传递数据,使用全局上下文管理全局状态。

Q: 如何实现路由?

A: 使用 dioxus::router 提供的路由组件和 NavLink 进行导航。

Q: 如何优化性能?

A: Dioxus 默认 memoized 组件,使用 use_memo 进行昂贵的计算。

Q: 支持服务端渲染吗?

A: 是的,Dioxus 支持服务端渲染(SSR)和静态站点生成(SSG)。

Q: 如何集成 API?

A: 使用服务端函数(Server Functions)或异步 hooks 来获取数据。

Q: 支持 TypeScript 吗?

A: Dioxus 是纯 Rust 框架,但可以使用 wasm-bindgen 与 TypeScript 交互。

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