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41 lines
1.6 KiB
Markdown
41 lines
1.6 KiB
Markdown
# Foreign Key Constraint Resolution - 2025-02-09 (Updated)
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## Revision Note
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Corrected migration sequence conflict:
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- Original 0002 migration conflicted with existing 0002 file
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- Created new migration as 0012_cleanup_invalid_designers.py
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- Deleted conflicting 0002_cleanup_invalid_designers.py
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## Updated Resolution Steps
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1. Created conflict-free migration 0012
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2. Verified migration dependencies:
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```python
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dependencies = [
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('rides', '0011_merge_20250209_1143'),
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('designers', '0001_initial'),
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]
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```
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3. New migration command:
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```bash
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python manage.py migrate rides 0012_cleanup_invalid_designers
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```
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## PGHistory Migration Fix - 2025-02-09
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Foreign key constraint violation during pghistory migration:
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1. Issue: `rides_ride_designer_id_172b997d_fk_designers_designer_id` constraint violation during 0010_rideevent migration
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2. Resolution:
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- Created new cleanup migration (0009_cleanup_invalid_designers_pre_events.py) to run before event table creation
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- Updated migration dependencies to ensure proper sequencing:
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```python
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# 0009_cleanup_invalid_designers_pre_events.py
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dependencies = [
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('rides', '0008_historicalride_post_closing_status_and_more'),
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('designers', '0001_initial'),
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]
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```
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- Created merge migration (0013_merge_20250209_1214.py) to resolve multiple leaf nodes
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3. Final Migration Sequence:
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- Base migrations up to 0008
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- Cleanup migration (0009_cleanup_invalid_designers_pre_events)
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- Event table creation (0010_rideevent_ridemodelevent_and_more)
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- Merge migrations (0011, 0012, 0013) |