Readded fk constraint for conversion_guests

alembic/versions/2025_12_03_1225-263bed87114f_add_conversions_conversion_guests_fk.py

@@ -0,0 +1,32 @@
+"""add conversions→conversion_guests fk
+
+Revision ID: 263bed87114f
+Revises: 3147e421bc47
+Create Date: 2025-12-03 12:25:12.820232
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = '263bed87114f'
+down_revision: Union[str, Sequence[str], None] = '3147e421bc47'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_foreign_key('fk_conversions_guest', 'conversions', 'conversion_guests', ['hotel_id', 'guest_id'], ['hotel_id', 'guest_id'])
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint('fk_conversions_guest', 'conversions', type_='foreignkey')
+    # ### end Alembic commands ###

src/alpine_bits_python/db.py

@@ -622,12 +622,15 @@ class Conversion(Base):
     updated_at = Column(DateTime(timezone=True))  # When this record was last updated
 
     # Table constraints
-    # Note: The relationship to ConversionGuest is handled via SQLAlchemy ORM
-    # by matching (hotel_id, guest_id) pairs, no DB-level FK constraint needed
     __table_args__ = (
         UniqueConstraint(
             "hotel_id", "pms_reservation_id", name="uq_conversion_hotel_reservation"
         ),
+        ForeignKeyConstraint(
+            ["hotel_id", "guest_id"],
+            ["conversion_guests.hotel_id", "conversion_guests.guest_id"],
+            name="fk_conversions_guest",
+        ),
     )
 
     # Relationships