Skill: Implement Django Feature

1. Domain Modeling (The Foundation)

Always start here.

• Create/Update models.py.
• Enforce id = models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True).
• Add created_at and updated_at (TimeStamped).
• Define __str__ method.

2. Business Logic Layer

Do not put heavy logic in Views.

• Create a services.py or selectors.py in the app.
• selectors.py: For fetching data (QuerySets, filtering).
• services.py: For writing data (Transactions, complex creates).

3. API Interface (DRF)

• Serializer:
  • Use ModelSerializer by default.
  • Explicitly list fields (or use fields = '__all__' only for prototyping).
• View:
  • Use rest_framework.generics or viewsets.
  • Apply permission_classes.
  • Apply filter_backends (DjangoFilterBackend, SearchFilter).
• URL:
  • Register in urls.py. Use the router if using ViewSets.

4. Admin Panel

• Don't forget admin.py.
• Use @admin.register(Model).
• Define list_display, search_fields, list_filter.

5. Testing

• Create a test file tests/test_[feature].py.
• Implement user happy path (201 Created / 200 OK).