Merge pull request 'cleaner-code' (#91) from cleaner-code into staging

Reviewed-on: #91

src/model/trip.rs

@@ -76,10 +76,6 @@ WHERE trip.id=?
             return Err(CoxHelpError::DetailsLocked);
         }
 
-        if planned_event.is_rower_registered(db, cox).await {
-            return Err(CoxHelpError::AlreadyRegisteredAsRower);
-        }
-
         match sqlx::query!(
             "INSERT INTO trip (cox_id, planned_event_id) VALUES(?, ?)",
             cox.id,
@@ -140,14 +136,7 @@ WHERE day=?
             return Err(TripUpdateError::NotYourTrip);
         }
 
-        let trip_details = sqlx::query!(
-            "SELECT trip_details_id as id FROM trip WHERE id = ?",
-            trip.id
-        )
-        .fetch_one(db)
-        .await
-        .unwrap(); //Okay, as trip can only be created with proper DB backing
-        let Some(trip_details_id) = trip_details.id else {
+        let Some(trip_details_id) = trip.trip_details_id else {
             return Err(TripUpdateError::TripDetailsDoesNotExist); //TODO: Remove?
         };