fn post_page<G: Html>(cx: Scope, state: &PostRx) -> View<G> {
    view! { cx,
        h1 { (state.title.get()) }
        p { (state.author.get()) }
        div(
            dangerously_set_inner_html = &state.content.get()
        )
    }
}

// ...

// This function will be run for each path under `/post/` to generate its state
#[engine_only_fn]
async fn get_build_state(
    StateGeneratorInfo { path, .. }: StateGeneratorInfo<()>,
) -> Result<Post, BlamedError<MyError>> {
    let raw_post = match get_post_for_path(path) {
        Ok(post) => post,
        // If the user sends us some bogus path with incremental generation,
        // return a 404 appropriately
        Err(err) => {
            return Err(BlamedError {
                blame: ErrorBlame::Client(Some(404)),
                error: MyError(err),
            })
        }
    };
    let html_content = parse_markdown(raw_post.content);
    let post = Post {
        title: raw_post.title,
        author: raw_post.author,
        content: html_content,
    };
    Ok(post)
}
#[engine_only_fn]
async fn get_build_paths() -> BuildPaths {
    BuildPaths {
        // These will all become URLs at `/post/<name>`
        paths: vec![
            "welcome".to_string(),
            "really-popular-post".to_string(),
            "foobar".to_string(),
        ],
        // Perseus supports helper state, but we don't need it here
        extra: ().into(),
    }
}