Project started 🍾

app/infrastructure/db/base.py

@@ -0,0 +1,22 @@
+"""Declarative base with a fixed naming convention.
+
+The naming convention makes Alembic autogenerate deterministic, named
+constraints — essential for clean, reversible migrations.
+"""
+
+from sqlalchemy import MetaData
+from sqlalchemy.orm import DeclarativeBase
+
+NAMING_CONVENTION = {
+    "ix": "ix_%(column_0_label)s",
+    "uq": "uq_%(table_name)s_%(column_0_name)s",
+    "ck": "ck_%(table_name)s_%(constraint_name)s",
+    "fk": "fk_%(table_name)s_%(column_0_name)s_%(referred_table_name)s",
+    "pk": "pk_%(table_name)s",
+}
+
+
+class Base(DeclarativeBase):
+    """Base for all ORM models. Import models so Alembic sees their metadata."""
+
+    metadata = MetaData(naming_convention=NAMING_CONVENTION)