Django REST Framework Viewset Template

Create Django REST Framework viewset for:

Model Name: {{MODEL_NAME}}
Features: {{FEATURES}} (CRUD/filtering/pagination/nested)
Authentication: {{AUTH}}

Generate complete DRF structure:

1. **Models (models.py):**
   - Model definition
   - Field definitions
   - Meta class
   - Model methods
   - Managers

2. **Serializers (serializers.py):**
   - ModelSerializer
   - Nested serializers
   - Custom fields
   - Validation methods
   - Create/update overrides
   - SerializerMethodField

3. **ViewSets (views.py):**
   - ModelViewSet
   - Custom actions
   - Permission classes
   - Filter backends
   - Pagination
   - Queryset optimization

4. **Permissions (permissions.py):**
   - Custom permission classes
   - Object-level permissions
   - Action-based permissions

5. **Filters (filters.py):**
   - FilterSet definition
   - Filter fields
   - Custom filters
   - Search fields
   - Ordering fields

6. **URLs (urls.py):**
   - Router registration
   - Custom URL patterns
   - Nested routers

7. **Tests (tests.py):**
   - APITestCase
   - Factory setup
   - CRUD tests
   - Permission tests
   - Filter tests

8. **Admin (admin.py):**
   - ModelAdmin
   - Inline admins
   - Custom actions

Include OpenAPI schema customization.