thrilltrack-explorer/django-backend/PHASE_1_FRONTEND_PARITY_STATUS.md

Phase 1 Frontend Feature Parity - Implementation Status

Date: November 9, 2025
Status: PARTIALLY COMPLETE (30% - 6 of 20 hours completed)

Overview

Phase 1 addresses critical missing features identified in the comprehensive frontend-backend audit to achieve 100% feature parity between the Django backend and the Supabase schema that the frontend expects.

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✅ COMPLETED WORK (6 hours)

Task 1: Fixed Park Coordinate Update Bug (2 hours) ✅ COMPLETE

Problem: Park location coordinates couldn't be updated via API because the latitude and longitude parameters were passed to ParkSubmissionService.update_entity_submission() but never used.

Solution Implemented:

• File: django/apps/entities/services/park_submission.py
• Added override method that extracts and handles coordinates
• Coordinates now properly update when moderators bypass the Sacred Pipeline
• Full tracking through ContentSubmission for audit trail

Files Modified:

• django/apps/entities/services/park_submission.py

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Task 2: Implemented Ride Name History Model & API (4 hours) ✅ COMPLETE

Frontend Usage: Used in 34+ places across 6 files (RideDetail.tsx, FormerNamesSection.tsx, FormerNamesEditor.tsx, etc.)

Completed:

1. ✅ Created RideNameHistory model in django/apps/entities/models.py
2. ✅ Generated migration django/apps/entities/migrations/0007_add_ride_name_history.py
3. ✅ Added admin interface with RideNameHistoryInline in django/apps/entities/admin.py
4. ✅ Created RideNameHistoryOut schema in django/api/v1/schemas.py
5. ✅ Added API endpoint GET /api/v1/rides/{ride_id}/name-history/ in django/api/v1/endpoints/rides.py

Model Features:

@pghistory.track()
class RideNameHistory(BaseModel):
    ride = models.ForeignKey('Ride', on_delete=models.CASCADE, related_name='name_history')
    former_name = models.CharField(max_length=255, db_index=True)
    from_year = models.IntegerField(null=True, blank=True)
    to_year = models.IntegerField(null=True, blank=True)
    date_changed = models.DateField(null=True, blank=True)
    date_changed_precision = models.CharField(max_length=20, null=True, blank=True)
    reason = models.TextField(null=True, blank=True)
    order_index = models.IntegerField(null=True, blank=True, db_index=True)

API Endpoint:

• URL: GET /api/v1/rides/{ride_id}/name-history/
• Response: List of historical names with date ranges
• Authentication: Not required for read access

Files Modified:

• django/apps/entities/models.py
• django/apps/entities/migrations/0007_add_ride_name_history.py
• django/apps/entities/admin.py
• django/api/v1/schemas.py
• django/api/v1/endpoints/rides.py

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🔄 IN PROGRESS WORK

Task 3: Implement Entity Timeline Events (Started - 0 of 6 hours)

Frontend Usage: 5 files actively use this: EntityTimelineManager.tsx, entitySubmissionHelpers.ts, systemActivityService.ts

Progress:

• ✅ Created timeline app structure (django/apps/timeline/)
• ✅ Created __init__.py and apps.py
• ⏳ NEXT: Create EntityTimelineEvent model
• ⏳ Generate and run migration
• ⏳ Add admin interface
• ⏳ Create timeline API endpoints
• ⏳ Update settings.py

Required Model Structure:

@pghistory.track()
class EntityTimelineEvent(models.Model):
    id = models.UUIDField(primary_key=True, default=uuid.uuid4)
    entity_id = models.UUIDField(db_index=True)
    entity_type = models.CharField(max_length=50, db_index=True)
    event_type = models.CharField(max_length=100)
    event_date = models.DateField()
    event_date_precision = models.CharField(max_length=20, null=True)
    title = models.CharField(max_length=255)
    description = models.TextField(null=True, blank=True)
    
    # Event details
    from_entity_id = models.UUIDField(null=True, blank=True)
    to_entity_id = models.UUIDField(null=True, blank=True)
    from_location = models.ForeignKey('entities.Location', null=True, on_delete=models.SET_NULL, related_name='+')
    to_location = models.ForeignKey('entities.Location', null=True, on_delete=models.SET_NULL, related_name='+')
    from_value = models.TextField(null=True, blank=True)
    to_value = models.TextField(null=True, blank=True)
    
    # Moderation
    is_public = models.BooleanField(default=True)
    display_order = models.IntegerField(null=True, blank=True)
    
    # Tracking
    created_by = models.ForeignKey('users.User', null=True, on_delete=models.SET_NULL)
    approved_by = models.ForeignKey('users.User', null=True, on_delete=models.SET_NULL, related_name='+')
    submission = models.ForeignKey('moderation.ContentSubmission', null=True, on_delete=models.SET_NULL)
    
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)
    
    class Meta:
        ordering = ['-event_date', '-created_at']
        indexes = [
            models.Index(fields=['entity_type', 'entity_id', '-event_date']),
            models.Index(fields=['event_type', '-event_date']),
        ]

Required API Endpoints:

• GET /api/v1/timeline/entity/{entity_type}/{entity_id}/ - Get timeline for entity
• GET /api/v1/timeline/recent/ - Get recent timeline events
• POST /api/v1/timeline/ - Create timeline event (moderators)
• PATCH /api/v1/timeline/{id}/ - Update timeline event (moderators)
• DELETE /api/v1/timeline/{id}/ - Delete timeline event (moderators)

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⏳ PENDING WORK (14 hours remaining)

Task 4: Implement Reports System (8 hours) - NOT STARTED

Frontend Usage: 7 files actively use reporting: ReportButton.tsx, ReportsQueue.tsx, RecentActivity.tsx, useModerationStats.ts, systemActivityService.ts

Required Implementation:

1. Create reports app (django/apps/reports/)

   • __init__.py, apps.py, models.py, admin.py, services.py

2. Create Report model:

@pghistory.track()
class Report(models.Model):
    STATUS_CHOICES = [
        ('pending', 'Pending'),
        ('reviewing', 'Under Review'),
        ('resolved', 'Resolved'),
        ('dismissed', 'Dismissed'),
    ]
    
    id = models.UUIDField(primary_key=True, default=uuid.uuid4)
    report_type = models.CharField(max_length=50)
    reported_entity_id = models.UUIDField(db_index=True)
    reported_entity_type = models.CharField(max_length=50, db_index=True)
    
    reporter = models.ForeignKey('users.User', on_delete=models.CASCADE, related_name='reports_filed')
    reason = models.TextField(null=True, blank=True)
    
    status = models.CharField(max_length=20, choices=STATUS_CHOICES, default='pending', db_index=True)
    reviewed_by = models.ForeignKey('users.User', null=True, on_delete=models.SET_NULL, related_name='reports_reviewed')
    reviewed_at = models.DateTimeField(null=True, blank=True)
    
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

3. Create API endpoints:

   • POST /api/v1/reports/ - Create report
   • GET /api/v1/reports/ - List reports (moderators only)
   • GET /api/v1/reports/{id}/ - Get report detail
   • PATCH /api/v1/reports/{id}/ - Update status (moderators)
   • GET /api/v1/reports/stats/ - Statistics (moderators)

4. Implement permissions:

   • Users can create reports
   • Only moderators can view/review reports
   • Moderators can update status and add review notes

5. Add admin interface with Unfold theme

6. Update settings.py to include 'apps.reports'

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📋 IMPLEMENTATION CHECKLIST

Immediate Next Steps (Task 3 Completion)

• Create django/apps/timeline/models.py with EntityTimelineEvent model
• Generate migration: python manage.py makemigrations timeline
• Run migration: python manage.py migrate timeline
• Create django/apps/timeline/admin.py with EntityTimelineEventAdmin
• Add 'apps.timeline' to config/settings/base.py INSTALLED_APPS
• Create timeline API schemas in django/api/v1/schemas.py
• Create django/api/v1/endpoints/timeline.py with endpoints
• Add timeline router to django/api/v1/api.py
• Test timeline functionality

Task 4 Steps (Reports System)

• Create django/apps/reports/ directory
• Create reports app files: init.py, apps.py, models.py, admin.py
• Create Report model with pghistory tracking
• Generate and run migration
• Add 'apps.reports' to settings INSTALLED_APPS
• Create report API schemas
• Create django/api/v1/endpoints/reports.py
• Implement permissions (users create, moderators review)
• Add reports router to API
• Create admin interface
• Test reporting functionality
• Document usage

Final Steps

• Run all pending migrations
• Test all new endpoints with curl/Postman
• Update API documentation
• Create completion document
• Mark Phase 1 as complete

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🔧 Key Technical Patterns to Follow

1. All Models Must Use @pghistory.track()

import pghistory

@pghistory.track()
class MyModel(models.Model):
    # fields here

2. Use Django Ninja for API Endpoints

from ninja import Router

router = Router(tags=["Timeline"])

@router.get("/{entity_type}/{entity_id}/", response={200: List[TimelineEventOut]})
def get_entity_timeline(request, entity_type: str, entity_id: UUID):
    # implementation

3. Register in Admin with Unfold Theme

from unfold.admin import ModelAdmin

@admin.register(EntityTimelineEvent)
class EntityTimelineEventAdmin(ModelAdmin):
    list_display = ['event_type', 'entity_type', 'entity_id', 'event_date']

4. Add Proper Database Indexes

class Meta:
    indexes = [
        models.Index(fields=['entity_type', 'entity_id', '-event_date']),
        models.Index(fields=['status', 'created_at']),
    ]

5. Use BaseModel or VersionedModel for Timestamps

from apps.core.models import BaseModel

class MyModel(BaseModel):
    # Automatically includes created_at, updated_at

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📊 Progress Summary

Total Estimated: 20 hours
Completed: 6 hours (30%)
Remaining: 14 hours (70%)

• Task 1: ✅ Complete (2 hours)
• Task 2: ✅ Complete (4 hours)
• Task 3: 🔄 Started (0 of 6 hours completed)
• Task 4: ⏳ Not started (8 hours)

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🚀 Recommendations

Option A: Complete Phase 1 Incrementally

Continue with Task 3 and Task 4 implementation. This is the original plan and provides full feature parity.

Pros:

• Complete feature parity with frontend
• All frontend code can function as expected
• No technical debt

Cons:

• Requires 14 more hours of development
• More complex to test all at once

Option B: Deploy What's Complete, Continue Later

Deploy Tasks 1 & 2 now, continue with Tasks 3 & 4 in Phase 2.

Pros:

• Immediate value from completed work
• Ride name history (heavily used feature) available now
• Can gather feedback before continuing

Cons:

• Frontend timeline features won't work until Task 3 complete
• Frontend reporting features won't work until Task 4 complete
• Requires two deployment cycles

Option C: Focus on High-Impact Features

Prioritize Task 3 (Timeline Events) which is used in 5 files, defer Task 4 (Reports) which could be implemented as an enhancement.

Pros:

• Balances completion time vs. impact
• Timeline is more core to entity tracking
• Reports could be a nice-to-have

Cons:

• Still leaves reporting incomplete
• Frontend reporting UI won't function

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📝 Notes

• All implementations follow the "Sacred Pipeline" pattern for user-submitted data
• Timeline and Reports apps are independent and can be implemented in any order
• Migration 0007_add_ride_name_history is ready to run
• Timeline app structure is in place, ready for model implementation

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📚 Reference Documentation

• django/COMPREHENSIVE_FRONTEND_BACKEND_AUDIT.md - Original audit identifying these gaps
• django/PHASE_1_FRONTEND_PARITY_PARTIAL_COMPLETE.md - Previous progress documentation
• django/SACRED_PIPELINE_AUDIT_AND_IMPLEMENTATION_PLAN.md - Sacred Pipeline patterns
• django/API_GUIDE.md - API implementation patterns
• django/ADMIN_GUIDE.md - Admin interface patterns