enable changing paid state

src/tera/admin/user.rs

@@ -77,6 +77,33 @@ async fn fees(
     Template::render("admin/user/fees", context.into_json())
 }
 
+#[get("/user/fees/paid?<user_ids>")]
+async fn fees_paid(
+    db: &State<SqlitePool>,
+    admin: AdminUser,
+    user_ids: Vec<i32>,
+) -> Flash<Redirect> {
+    let mut res = String::new();
+    for user_id in user_ids {
+        let user = User::find_by_id(db, user_id).await.unwrap();
+        res.push_str(&format!("{} + ", user.name));
+        if user.has_role(db, "paid").await {
+            user.remove_role(db, &Role::find_by_name(db, "paid").await.unwrap())
+                .await;
+        } else {
+            user.add_role(db, &Role::find_by_name(db, "paid").await.unwrap())
+                .await;
+        }
+    }
+
+    res.truncate(res.len() - 3); // remove ' + ' from the end
+
+    Flash::success(
+        Redirect::to("/admin/user/fees"),
+        format!("Zahlungsstatus von {} erfolgreich geändert", res),
+    )
+}
+
 #[get("/user/<user>/reset-pw")]
 async fn resetpw(db: &State<SqlitePool>, _admin: AdminUser, user: i32) -> Flash<Redirect> {
     let user = User::find_by_id(db, user).await;
@@ -165,5 +192,5 @@ async fn create(
 }
 
 pub fn routes() -> Vec<Route> {
-    routes![index, resetpw, update, create, delete, fees]
+    routes![index, resetpw, update, create, delete, fees, fees_paid]
 }