add examples, automatic expired removal, better configurability

2019-12-31 20:31:38 +01:00
parent af30c552ac
commit cde08fe788
3 changed files with 345 additions and 87 deletions
@@ -0,0 +1,70 @@
+#![feature(proc_macro_hygiene, decl_macro)]
+#[macro_use]
+extern crate rocket;
+
+use rocket::response::content::Html;
+use rocket::response::Redirect;
+use rocket::request::Form;
+
+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(r#"
+            </ul>
+        "#);
+
+    Html(page)
+}
+
+#[derive(FromForm)]
+struct AddForm {
+    name: String,
+}
+
+#[post("/add", data="<dog>")]
+fn add(session: Session, dog : Form<AddForm>) -> Redirect {
+    session.tap(move |sess| {
+        sess.push(dog.into_inner().name);
+    });
+
+    Redirect::found("/")
+}
+
+#[get("/remove/<dog>")]
+fn remove(session: Session, dog : usize) -> Redirect {
+    session.tap(|sess| {
+        if dog < sess.len() {
+            sess.remove(dog);
+        }
+    });
+
+    Redirect::found("/")
+}