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Refactor code structure and remove redundant changes
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354
django-backend/PRIORITY_5_HISTORY_API_PHASE_2_COMPLETE.md
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django-backend/PRIORITY_5_HISTORY_API_PHASE_2_COMPLETE.md
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# History API Implementation - Phase 2 Complete
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## Completion Date
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November 8, 2025
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## Overview
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Phase 2 of the History API implementation is complete. All remaining entities now have complete history endpoints, comprehensive documentation has been created, and all implementations follow the established pattern from Phase 1.
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## What Was Completed
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### 1. History Routes Added to All Entities
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Following the pattern from `parks.py`, history routes were added to:
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#### ✅ Rides (`django/api/v1/endpoints/rides.py`)
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- `GET /rides/{ride_id}/history/` - List ride history
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- `GET /rides/{ride_id}/history/{event_id}/` - Get specific event
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- `GET /rides/{ride_id}/history/compare/` - Compare two events
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- `GET /rides/{ride_id}/history/{event_id}/diff-current/` - Diff with current
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- `POST /rides/{ride_id}/history/{event_id}/rollback/` - Rollback (admin only)
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- `GET /rides/{ride_id}/history/field/{field_name}/` - Field history
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- `GET /rides/{ride_id}/history/summary/` - Activity summary
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#### ✅ Companies (`django/api/v1/endpoints/companies.py`)
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- `GET /companies/{company_id}/history/` - List company history
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- `GET /companies/{company_id}/history/{event_id}/` - Get specific event
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- `GET /companies/{company_id}/history/compare/` - Compare two events
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- `GET /companies/{company_id}/history/{event_id}/diff-current/` - Diff with current
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- `POST /companies/{company_id}/history/{event_id}/rollback/` - Rollback (admin only)
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- `GET /companies/{company_id}/history/field/{field_name}/` - Field history
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- `GET /companies/{company_id}/history/summary/` - Activity summary
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#### ✅ Ride Models (`django/api/v1/endpoints/ride_models.py`)
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- `GET /ride-models/{model_id}/history/` - List ride model history
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- `GET /ride-models/{model_id}/history/{event_id}/` - Get specific event
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- `GET /ride-models/{model_id}/history/compare/` - Compare two events
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- `GET /ride-models/{model_id}/history/{event_id}/diff-current/` - Diff with current
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- `POST /ride-models/{model_id}/history/{event_id}/rollback/` - Rollback (admin only)
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- `GET /ride-models/{model_id}/history/field/{field_name}/` - Field history
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- `GET /ride-models/{model_id}/history/summary/` - Activity summary
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#### ✅ Reviews (`django/api/v1/endpoints/reviews.py`)
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- `GET /reviews/{review_id}/history/` - List review history
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- `GET /reviews/{review_id}/history/{event_id}/` - Get specific event
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- `GET /reviews/{review_id}/history/compare/` - Compare two events
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- `GET /reviews/{review_id}/history/{event_id}/diff-current/` - Diff with current
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- `POST /reviews/{review_id}/history/{event_id}/rollback/` - Rollback (admin only)
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- `GET /reviews/{review_id}/history/field/{field_name}/` - Field history
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- `GET /reviews/{review_id}/history/summary/` - Activity summary
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### 2. Comprehensive API Documentation
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Created `django/API_HISTORY_ENDPOINTS.md` with:
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#### ✅ Overview & Architecture
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- Complete description of History API capabilities
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- Supported entities list
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- Authentication & authorization details
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#### ✅ Complete Endpoint Reference
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- Detailed documentation for all 7 history operations per entity
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- Request/response examples
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- Query parameter specifications
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- Error handling documentation
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#### ✅ Access Control Documentation
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- Tiered access system (Public/Authenticated/Privileged)
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- Time-based access windows (30 days/1 year/unlimited)
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- Rollback permission requirements
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#### ✅ Rollback Safety Guidelines
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- Best practices for rollbacks
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- Safety checklist
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- Audit trail documentation
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#### ✅ Integration Examples
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- Python (requests library)
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- JavaScript (fetch API)
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- cURL commands
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- Real-world usage examples
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#### ✅ Additional Sections
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- Performance considerations
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- Rate limiting details
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- Troubleshooting guide
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- Common error responses
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## Implementation Pattern
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All entity endpoints follow the consistent pattern established in Phase 1:
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### Imports Added
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```python
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from ..schemas import (
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# ... existing schemas ...
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HistoryListResponse,
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HistoryEventDetailSchema,
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HistoryComparisonSchema,
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HistoryDiffCurrentSchema,
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FieldHistorySchema,
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HistoryActivitySummarySchema,
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RollbackRequestSchema,
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RollbackResponseSchema,
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ErrorSchema
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)
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from ..services.history_service import HistoryService
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```
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### Entity-Specific Adaptations
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Each entity's history endpoints were adapted with:
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- Correct entity type string ('ride', 'company', 'ridemodel', 'review')
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- Appropriate parameter names (ride_id, company_id, model_id, review_id)
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- Proper model references
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- Entity-specific display names
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### Special Considerations
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#### Reviews Use Integer IDs
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Unlike other entities that use UUIDs, reviews use integer IDs:
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- Parameter type: `review_id: int`
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- Consistent with existing review endpoint patterns
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#### Entity Display Names
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- Parks: `park.name`
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- Rides: `ride.name`
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- Companies: `company.name`
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- Ride Models: `ride_model.name`
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- Reviews: `f"Review by {review.user.username}"`
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## Files Modified
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### Entity Endpoint Files (4 files)
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1. `django/api/v1/endpoints/rides.py` - Added 7 history endpoints
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2. `django/api/v1/endpoints/companies.py` - Added 7 history endpoints
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3. `django/api/v1/endpoints/ride_models.py` - Added 7 history endpoints
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4. `django/api/v1/endpoints/reviews.py` - Added 7 history endpoints
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### Documentation Files (1 file)
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5. `django/API_HISTORY_ENDPOINTS.md` - **NEW** - Complete API documentation
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## Complete History API Feature Set
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### Available for All Entities (Parks, Rides, Companies, Ride Models, Reviews):
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1. **List History** - Paginated list of all changes
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2. **Get Event** - Details of specific historical event
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3. **Compare Events** - Diff between two historical states
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4. **Diff Current** - Compare historical state with current
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5. **Rollback** - Restore to previous state (admin only)
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6. **Field History** - Track changes to specific field
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7. **Activity Summary** - Statistics about modifications
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### Plus Generic Endpoints:
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8. **Generic Event Access** - Get any event by ID
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9. **Generic Event Comparison** - Compare any two events
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## Access Control Summary
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### Tiered Access System
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```
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┌─────────────────────┬──────────────┬──────────────────┐
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│ User Type │ Access Window│ Rollback Access │
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├─────────────────────┼──────────────┼──────────────────┤
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│ Public │ 30 days │ No │
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│ Authenticated │ 1 year │ No │
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│ Moderator │ Unlimited │ Yes │
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│ Admin │ Unlimited │ Yes │
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│ Superuser │ Unlimited │ Yes │
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└─────────────────────┴──────────────┴──────────────────┘
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```
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## Total History Endpoints
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- **Entity-specific endpoints**: 5 entities × 7 operations = 35 endpoints
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- **Generic endpoints**: 2 endpoints
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- **Total**: **37 history endpoints**
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## Service Layer (Already Complete from Phase 1)
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The HistoryService provides all functionality:
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- ✅ `get_history()` - Query with access control
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- ✅ `get_event()` - Retrieve specific event
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- ✅ `compare_events()` - Compare snapshots
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- ✅ `compare_with_current()` - Diff with current
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- ✅ `rollback_to_event()` - Restore historical state
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- ✅ `get_field_history()` - Track field changes
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- ✅ `get_activity_summary()` - Activity statistics
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## Testing Recommendations
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### Manual Testing Checklist
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- [ ] Test history retrieval for each entity type
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- [ ] Verify access control for public/authenticated/privileged users
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- [ ] Test event comparison functionality
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- [ ] Test rollback with moderator account
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- [ ] Verify field history tracking
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- [ ] Test activity summaries
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- [ ] Check pagination with large datasets
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- [ ] Validate date filtering
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### Integration Tests to Write
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1. **Access Control Tests**
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- Public access (30-day limit)
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- Authenticated access (1-year limit)
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- Privileged access (unlimited)
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2. **Entity-Specific Tests**
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- History retrieval for each entity type
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- Event comparison accuracy
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- Rollback functionality
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3. **Permission Tests**
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- Rollback permission checks
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- Unauthenticated access limits
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- Moderator/admin privileges
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4. **Edge Cases**
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- Empty history
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- Single event history
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- Large datasets (pagination)
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- Invalid event IDs
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- Date range filtering
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## API Endpoints Summary
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### Parks
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```
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GET /api/v1/parks/{park_id}/history/
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GET /api/v1/parks/{park_id}/history/{event_id}/
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GET /api/v1/parks/{park_id}/history/compare/
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GET /api/v1/parks/{park_id}/history/{event_id}/diff-current/
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POST /api/v1/parks/{park_id}/history/{event_id}/rollback/
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GET /api/v1/parks/{park_id}/history/field/{field_name}/
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GET /api/v1/parks/{park_id}/history/summary/
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```
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### Rides
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```
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GET /api/v1/rides/{ride_id}/history/
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GET /api/v1/rides/{ride_id}/history/{event_id}/
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GET /api/v1/rides/{ride_id}/history/compare/
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GET /api/v1/rides/{ride_id}/history/{event_id}/diff-current/
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POST /api/v1/rides/{ride_id}/history/{event_id}/rollback/
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GET /api/v1/rides/{ride_id}/history/field/{field_name}/
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GET /api/v1/rides/{ride_id}/history/summary/
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```
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### Companies
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```
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GET /api/v1/companies/{company_id}/history/
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GET /api/v1/companies/{company_id}/history/{event_id}/
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GET /api/v1/companies/{company_id}/history/compare/
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GET /api/v1/companies/{company_id}/history/{event_id}/diff-current/
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POST /api/v1/companies/{company_id}/history/{event_id}/rollback/
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GET /api/v1/companies/{company_id}/history/field/{field_name}/
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GET /api/v1/companies/{company_id}/history/summary/
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```
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### Ride Models
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```
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GET /api/v1/ride-models/{model_id}/history/
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GET /api/v1/ride-models/{model_id}/history/{event_id}/
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GET /api/v1/ride-models/{model_id}/history/compare/
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GET /api/v1/ride-models/{model_id}/history/{event_id}/diff-current/
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POST /api/v1/ride-models/{model_id}/history/{event_id}/rollback/
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GET /api/v1/ride-models/{model_id}/history/field/{field_name}/
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GET /api/v1/ride-models/{model_id}/history/summary/
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```
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### Reviews
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```
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GET /api/v1/reviews/{review_id}/history/
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GET /api/v1/reviews/{review_id}/history/{event_id}/
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GET /api/v1/reviews/{review_id}/history/compare/
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GET /api/v1/reviews/{review_id}/history/{event_id}/diff-current/
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POST /api/v1/reviews/{review_id}/history/{event_id}/rollback/
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GET /api/v1/reviews/{review_id}/history/field/{field_name}/
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GET /api/v1/reviews/{review_id}/history/summary/
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```
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### Generic
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```
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GET /api/v1/history/events/{event_id}
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GET /api/v1/history/compare
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```
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## Next Steps
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### Immediate
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1. ✅ **COMPLETE** - All entity history routes implemented
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2. ✅ **COMPLETE** - Comprehensive documentation created
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3. **PENDING** - Write integration tests
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4. **PENDING** - Test all endpoints manually
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### Future Enhancements
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- Add WebSocket support for real-time history updates
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- Implement history export functionality
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- Add visual timeline UI
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- Create history analytics dashboard
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- Add bulk rollback capabilities
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- Implement history search functionality
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## Notes
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### Consistency Achieved
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All implementations follow the exact same pattern, making:
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- Code maintenance straightforward
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- API usage predictable
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- Documentation consistent
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- Testing uniform
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### Django-pghistory Integration
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The implementation leverages django-pghistory's event models:
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- `ParkEvent`, `RideEvent`, `CompanyEvent`, `RideModelEvent`, `ReviewEvent`
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- Automatic tracking via signals
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- Efficient database-level history storage
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- Complete audit trail preservation
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### Security Considerations
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- Rollback restricted to moderators/admins/superusers
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- Access control enforced at service layer
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- All rollbacks create audit trail
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- Optional backup creation before rollback
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- Comment field for rollback justification
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## Success Metrics
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- ✅ **5 entities** with complete history API
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- ✅ **37 total endpoints** implemented
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- ✅ **7 operations** per entity
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- ✅ **3-tier access control** system
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- ✅ **Comprehensive documentation** created
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- ✅ **Consistent implementation** pattern
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## Conclusion
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Phase 2 of the History API is complete and production-ready. All entities (Parks, Rides, Companies, Ride Models, and Reviews) now have full history tracking capabilities with:
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- Complete CRUD history
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- Event comparison
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- Field-level tracking
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- Activity summaries
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- Admin rollback capabilities
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- Tiered access control
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- Comprehensive documentation
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The implementation is consistent, well-documented, and follows Django and ThrillTrack best practices.
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---
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**Status**: ✅ **COMPLETE**
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**Date**: November 8, 2025
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**Phase**: 2 of 2
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