clean code with clippy

src/model/trip.rs

@@ -168,7 +168,7 @@ FROM user_trip WHERE trip_details_id = (SELECT trip_details_id FROM trip WHERE i
         trip_id: i64,
     ) -> Result<(), TripDeleteError> {
         let registered_rower = Self::get_all_rower_for_id(db, trip_id).await;
-        if registered_rower.len() > 0 {
+        if registered_rower.is_empty() {
             return Err(TripDeleteError::SomebodyAlreadyRegistered);
         }
 

src/model/user.rs

@@ -55,37 +55,33 @@ impl User {
     }
 
     pub async fn find_by_id(db: &SqlitePool, id: i32) -> Option<Self> {
-        Some(
-            sqlx::query_as!(
-                User,
-                "
+        sqlx::query_as!(
+            User,
+            "
 SELECT id, name, pw, is_cox, is_admin, is_guest
 FROM user 
 WHERE id like ?
         ",
-                id
-            )
-            .fetch_one(db)
-            .await
-            .ok()?,
+            id
         )
+        .fetch_one(db)
+        .await
+        .ok()
     }
 
     async fn find_by_name(db: &SqlitePool, name: String) -> Option<Self> {
-        Some(
-            sqlx::query_as!(
-                User,
-                "
+        sqlx::query_as!(
+            User,
+            "
 SELECT id, name, pw, is_cox, is_admin, is_guest
 FROM user 
 WHERE name like ?
         ",
-                name
-            )
-            .fetch_one(db)
-            .await
-            .ok()?,
+            name
         )
+        .fetch_one(db)
+        .await
+        .ok()
     }
 
     fn get_hashed_pw(pw: &str) -> String {