Ensure patron uuid are set in the migration.

alembic/versions/20241030_272da5f400de_add_uuid_to_patron_table.py

@@ -25,6 +25,22 @@ def upgrade() -> None:
         sa.Column("uuid", UUID(as_uuid=True), nullable=False, default=uuid.uuid4),
     )
 
+    conn = op.get_bind()
+    rows = conn.execute("SELECT id from patrons").all()
+
+    for row in rows:
+        conn.execute(
+            """
+            UPDATE patrons
+            SET uuid = %(uuid)s
+            WHERE id = %(id)s
+            """,
+            {
+                "id": row.id,
+                "uuid": uuid.uuid4(),
+            },
+        )
+
 
 def downgrade() -> None:
     op.drop_column("patrons", "uuid")