fix: lazy load

src/__init__.py

@@ -1 +0,0 @@
-"""tgex backend package."""

src/adapter/postgres.py

@@ -135,7 +135,14 @@ class Postgres(DatabaseBase):
     async def add_external_channel_to_targets(
         self, external_channel_id: uuid.UUID, target_channel_ids: list[uuid.UUID]
     ) -> None:
-        external_channel = await self.session.get(domain.ExternalChannel, external_channel_id)
+        stmt = (
+            select(domain.ExternalChannel)
+            .where(domain.ExternalChannel.id == external_channel_id)
+            .options(selectinload(domain.ExternalChannel.target_channels))
+        )
+        result = await self.session.execute(stmt)
+        external_channel = result.scalar_one_or_none()
+
         if not external_channel:
             raise ValueError(f'ExternalChannel {external_channel_id} not found')
 
@@ -149,7 +156,14 @@ class Postgres(DatabaseBase):
     async def remove_external_channel_from_target(
         self, external_channel_id: uuid.UUID, target_channel_id: uuid.UUID
     ) -> None:
-        external_channel = await self.session.get(domain.ExternalChannel, external_channel_id)
+        stmt = (
+            select(domain.ExternalChannel)
+            .where(domain.ExternalChannel.id == external_channel_id)
+            .options(selectinload(domain.ExternalChannel.target_channels))
+        )
+        result = await self.session.execute(stmt)
+        external_channel = result.scalar_one_or_none()
+
         if not external_channel:
             raise ValueError(f'ExternalChannel {external_channel_id} not found')
 

src/usecase/target_channel/disconnect_target_chan_by_tg_id.py

@@ -10,13 +10,12 @@ log = logging.getLogger(__name__)
 
 
 async def disconnect_target_chan_by_tg_id(self: 'Usecase', input: dto.DisconnectTargetChanByTgIdInput) -> None:
-    # Получаем user_id по telegram_id
+    async with self.database.transaction():
         user = await self.database.get_user(telegram_id=input.user_telegram_id)
         if not user:
             log.warning(f'User with telegram_id {input.user_telegram_id} not found when disconnecting channel')
             return
 
-    async with self.database.transaction():
         channel = await self.database.get_target_channel(user.id, telegram_id=input.telegram_id)
         if not channel:
             log.warning(f'Target channel {input.telegram_id} not found')