---
# nuzlocke-tracker-h0dr
title: Fix route deletion failing due to missing cascade on route_encounters
status: completed
type: bug
priority: normal
created_at: 2026-02-14T14:19:56Z
updated_at: 2026-02-14T14:23:10Z
---

Deleting a route returns 500 due to two FK constraint issues:

1. `route_encounters.route_id` — missing cascade on the relationship (SQLAlchemy tried to NULL a NOT NULL column)
2. `boss_battles.after_route_id` — references the route being deleted

## Fix
- Added `cascade="all, delete-orphan"` to `Route.route_encounters` relationship
- Added `update(BossBattle).where(...).values(after_route_id=None)` before deleting the route in the delete endpoint