Deletes all existing building map entries if the id does not match th…

…e current served map, before saving (#735)

* Deletes all existing building map entries if the id does not match the current served map, before saving

Signed-off-by: Aaron Chong <aaronchongth@gmail.com>

* Fix remapped variable

Signed-off-by: Aaron Chong <aaronchongth@gmail.com>

---------

Signed-off-by: Aaron Chong <aaronchongth@gmail.com>

packages/api-server/api_server/models/building_map.py

@@ -20,4 +20,8 @@ def from_tortoise(tortoise: ttm.BuildingMap) -> "BuildingMap":
         return BuildingMap(**tortoise.data)
 
     async def save(self) -> None:
+        existing_maps = await ttm.BuildingMap.all()
+        for m in existing_maps:
+            if m.id_ != self.name:
+                await m.delete()
         await ttm.BuildingMap.update_or_create({"data": self.dict()}, id_=self.name)