🚚 Rename backend component (idfm_matrix_backend -> backend)

backend/backend/db/base_class.py

@@ -0,0 +1,34 @@
+from collections.abc import Iterable
+
+from sqlalchemy import select
+from sqlalchemy.exc import IntegrityError
+from sqlalchemy.orm import declarative_base
+from typing import Iterable, Self
+
+Base = declarative_base()
+Base.db = None
+
+
+async def base_add(cls, stops: Self | Iterable[Self]) -> bool:
+    try:
+        method = (
+            cls.db.session.add_all
+            if isinstance(stops, Iterable)
+            else cls.db.session.add
+        )
+        method(stops)
+        await cls.db.session.commit()
+    except IntegrityError as err:
+        print(err)
+
+
+Base.add = classmethod(base_add)
+
+
+async def base_get_by_id(cls, id_: int | str) -> None | Base:
+    res = await cls.db.session.execute(select(cls).where(cls.id == id_))
+    element = res.scalar_one_or_none()
+    return element
+
+
+Base.get_by_id = classmethod(base_get_by_id)