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rocket_session/examples/dog_list/main.rs

61 lines
1.4 KiB

#![feature(proc_macro_hygiene, decl_macro)]
#[macro_use]
extern crate rocket;
use rocket::response::content::Html;
use rocket::response::Redirect;
type Session<'a> = rocket_session::Session<'a, Vec<String>>;
fn main() {
rocket::ignite()
.attach(Session::fairing())
.mount("/", routes![index, add, remove])
.launch();
}
#[get("/")]
fn index(session: Session) -> Html<String> {
let mut page = String::new();
page.push_str(
r#"
<!DOCTYPE html>
<h1>My Dogs</h1>
<form method="POST" action="/add">
Add Dog: <input type="text" name="name"> <input type="submit" value="Add">
</form>
<ul>
"#,
);
session.tap(|sess| {
for (n, dog) in sess.iter().enumerate() {
page.push_str(&format!(
r#"<li>&#x1F436; {} <a href="/remove/{}">Remove</a></li>"#,
dog, n
));
}
});
page.push_str("</ul>");
Html(page)
}
#[post("/add", data = "<dog>")]
fn add(session: Session, dog: String) -> Redirect {
session.tap(move |sess| {
sess.push(dog);
});
Redirect::found("/")
}
#[get("/remove/<dog>")]
fn remove(session: Session, dog: usize) -> Redirect {
session.tap(|sess| {
if dog < sess.len() {
sess.remove(dog);
}
});
Redirect::found("/")
}