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#![feature(proc_macro_hygiene, decl_macro)]
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#[macro_use]
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extern crate rocket;
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use rocket::request::Form;
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use rocket::response::content::Html;
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use rocket::response::Redirect;
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type Session<'a> = rocket_session::Session<'a, Vec<String>>;
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fn main() {
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rocket::ignite()
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.attach(Session::fairing())
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.mount("/", routes![index, add, remove])
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.launch();
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}
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#[get("/")]
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fn index(session: Session) -> Html<String> {
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let mut page = String::new();
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page.push_str(
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r#"
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<!DOCTYPE html>
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<h1>My Dogs</h1>
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<form method="POST" action="/add">
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Add Dog: <input type="text" name="name"> <input type="submit" value="Add">
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</form>
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<ul>
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"#,
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);
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session.tap(|sess| {
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for (n, dog) in sess.iter().enumerate() {
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page.push_str(&format!(
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r#"
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<li>🐶 {} <a href="/remove/{}">Remove</a></li>
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"#,
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dog, n
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));
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}
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});
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page.push_str(
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r#"
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</ul>
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"#,
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);
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Html(page)
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}
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#[derive(FromForm)]
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struct AddForm {
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name: String,
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}
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#[post("/add", data = "<dog>")]
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fn add(session: Session, dog: Form<AddForm>) -> Redirect {
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session.tap(move |sess| {
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sess.push(dog.into_inner().name);
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});
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Redirect::found("/")
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}
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#[get("/remove/<dog>")]
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fn remove(session: Session, dog: usize) -> Redirect {
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session.tap(|sess| {
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if dog < sess.len() {
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sess.remove(dog);
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}
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});
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Redirect::found("/")
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}
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