don't show duplicate boats for rennrowing

src/model/boat.rs

@@ -1,5 +1,6 @@
 use std::ops::DerefMut;
 
+use itertools::Itertools;
 use rocket::serde::{Deserialize, Serialize};
 use rocket::FromForm;
 use sqlx::{FromRow, Sqlite, SqlitePool, Transaction};
@@ -7,7 +8,7 @@ use sqlx::{FromRow, Sqlite, SqlitePool, Transaction};
 use super::location::Location;
 use super::user::User;
 
-#[derive(FromRow, Debug, Serialize, Deserialize)]
+#[derive(FromRow, Debug, Serialize, Deserialize, Eq, Hash, PartialEq, Clone)]
 pub struct Boat {
     pub id: i64,
     pub name: String,
@@ -279,6 +280,7 @@ ORDER BY amount_seats DESC
         .unwrap(); //TODO: fixme
             boats.extend(boats_in_ottensheim.into_iter());
         }
+        let boats = boats.into_iter().unique().collect();
 
         Self::boats_to_details(db, boats).await
     }