dioxus/docs/guide/examples/rendering_lists.rs

#![allow(non_snake_case)]

use dioxus::prelude::*;

fn main() {
    dioxus_desktop::launch(App);
}

#[derive(PartialEq, Clone)]
struct Comment {
    content: String,
    id: usize,
}

#[rustfmt::skip]
pub fn App(cx: Scope) -> Element {
    // ANCHOR: render_list
let comment_field = use_state(cx, String::new);
let mut next_id = use_state(cx, || 0);
let comments = use_ref(cx, Vec::<Comment>::new);

let comments_lock = comments.read();
let comments_rendered = comments_lock.iter().map(|comment| {
    rsx!(CommentComponent {
        key: "{comment.id}",
        comment: comment.clone(),
    })
});

cx.render(rsx!(
    form {
        onsubmit: move |_| {
            comments.write().push(Comment {
                content: comment_field.get().clone(),
                id: *next_id.get(),
            });
            next_id += 1;

            comment_field.set(String::new());
        },
        input {
            value: "{comment_field}",
            oninput: |event| comment_field.set(event.value.clone()),
        }
        input {
            r#type: "submit",
        }
    },
    comments_rendered,
))
    // ANCHOR_END: render_list
}

#[rustfmt::skip]
pub fn AppForLoop(cx: Scope) -> Element {
    // ANCHOR: render_list_for_loop
let comment_field = use_state(cx, String::new);
let mut next_id = use_state(cx, || 0);
let comments = use_ref(cx, Vec::<Comment>::new);

cx.render(rsx!(
    form {
        onsubmit: move |_| {
            comments.write().push(Comment {
                content: comment_field.get().clone(),
                id: *next_id.get(),
            });
            next_id += 1;

            comment_field.set(String::new());
        },
        input {
            value: "{comment_field}",
            oninput: |event| comment_field.set(event.value.clone()),
        }
        input {
            r#type: "submit",
        }
    },
    for comment in &*comments.read() {
        // Notice the body of this for loop is rsx code, not an expression
        CommentComponent {
            key: "{comment.id}",
            comment: comment.clone(),
        }
    }
))
    // ANCHOR_END: render_list_for_loop
}

#[inline_props]
fn CommentComponent(cx: Scope, comment: Comment) -> Element {
    cx.render(rsx!(div {
        "Comment by anon:",
        p { "{comment.content}" }
        button { "Reply" },
    }))
}