Added Account::delete_all method

src/entity/account.rs

@@ -145,4 +145,13 @@ impl Entity {
             .await
             .map_err(Into::into)
     }
+
+    /// Deletes all the user's accounts from DB
+    pub async fn delete_all(user_id: u64, db: &DatabaseConnection) -> crate::Result<()> {
+        Self::delete_many()
+            .filter(Column::UserId.eq(user_id))
+            .exec(db)
+            .await?;
+        Ok(())
+    }
 }