only show non-placed boats in boathouse list

src/model/boat.rs

@@ -5,6 +5,8 @@ use rocket::serde::{Deserialize, Serialize};
 use rocket::FromForm;
 use sqlx::{FromRow, Sqlite, SqlitePool, Transaction};
 
+use crate::model::boathouse::Boathouse;
+
 use super::location::Location;
 use super::user::User;
 
@@ -357,6 +359,17 @@ ORDER BY amount_seats DESC
             .await
             .unwrap(); //Okay, because we can only create a Boat of a valid id
     }
+
+    pub async fn boathouse(&self, db: &SqlitePool) -> Option<Boathouse> {
+        sqlx::query_as!(
+            Boathouse,
+            "SELECT * FROM boathouse WHERE boat_id like ?",
+            self.id
+        )
+        .fetch_one(db)
+        .await
+        .ok()
+    }
 }
 
 #[cfg(test)]