Fix playdates cascade deletes

app/dbtables.py

@@ -48,7 +48,7 @@ class PlaydatesTable(Model):
 
     id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
     lastplayed: Mapped[dt.datetime] = mapped_column(index=True)
-    track_id: Mapped[int] = mapped_column(ForeignKey("tracks.id"))
+    track_id: Mapped[int] = mapped_column(ForeignKey("tracks.id", ondelete="CASCADE"))
     track: Mapped["TracksTable"] = relationship(
         "TracksTable",
         back_populates="playdates",
@@ -104,7 +104,9 @@ class PlaylistRowsTable(Model):
     )
 
     playlist: Mapped[PlaylistsTable] = relationship(back_populates="rows")
-    track_id: Mapped[Optional[int]] = mapped_column(ForeignKey("tracks.id", ondelete="CASCADE"))
+    track_id: Mapped[Optional[int]] = mapped_column(
+        ForeignKey("tracks.id", ondelete="CASCADE")
+    )
     track: Mapped["TracksTable"] = relationship(
         "TracksTable",
         back_populates="playlistrows",

migrations/versions/ab475332d873_fix_playdates_cascades.py

@@ -0,0 +1,46 @@
+"""fix playlist cascades
+
+Revision ID: ab475332d873
+Revises: 04df697e40cd
+Create Date: 2025-02-26 13:11:15.417278
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'ab475332d873'
+down_revision = '04df697e40cd'
+branch_labels = None
+depends_on = None
+
+
+def upgrade(engine_name: str) -> None:
+    globals()["upgrade_%s" % engine_name]()
+
+
+def downgrade(engine_name: str) -> None:
+    globals()["downgrade_%s" % engine_name]()
+
+
+
+
+
+def upgrade_() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('playdates', schema=None) as batch_op:
+        batch_op.drop_constraint('fk_playdates_track_id_tracks', type_='foreignkey')
+        batch_op.create_foreign_key(None, 'tracks', ['track_id'], ['id'], ondelete='CASCADE')
+
+    # ### end Alembic commands ###
+
+
+def downgrade_() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('playdates', schema=None) as batch_op:
+        batch_op.drop_constraint(None, type_='foreignkey')
+        batch_op.create_foreign_key('fk_playdates_track_id_tracks', 'tracks', ['track_id'], ['id'])
+
+    # ### end Alembic commands ###
+