clean duplicate speicifications

src/model/location.rs

@@ -1,5 +1,6 @@
 use serde::{Deserialize, Serialize};
-use sqlx::{FromRow, SqlitePool};
+use sqlx::{FromRow, Sqlite, SqlitePool, Transaction};
+use std::ops::DerefMut;
 
 #[derive(FromRow, Debug, Serialize, Deserialize)]
 pub struct Location {
@@ -37,6 +38,20 @@ impl Location {
         .await
         .ok()
     }
+    pub async fn find_by_name_tx(db: &mut Transaction<'_, Sqlite>, name: String) -> Option<Self> {
+        sqlx::query_as!(
+            Self,
+            "
+    SELECT id, name
+    FROM location
+    WHERE name=?
+            ",
+            name
+        )
+        .fetch_one(db.deref_mut())
+        .await
+        .ok()
+    }
 
     pub async fn all(db: &SqlitePool) -> Vec<Self> {
         sqlx::query_as!(Self, "SELECT id, name FROM location")