Implement site-wide search system architecture with modular design and enhanced backend components; integrate django-filter for improved filtering capabilities and security considerations

memory-bank/features/search-system.md

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+# Site-Wide Search System Architecture
+
+## 1. Architectural Overview
+- **Filter-First Approach**: Utilizes django-filter for robust filtering capabilities
+- **Modular Design**:
+  ```python
+  # filters.py
+  class ParkFilter(django_filters.FilterSet):
+      search = django_filters.CharFilter(method='filter_search')
+      
+      class Meta:
+          model = Park
+          fields = {
+              'state': ['exact', 'in'],
+              'rating': ['gte', 'lte'],
+          }
+
+      def filter_search(self, queryset, name, value):
+          return queryset.filter(
+              Q(name__icontains=value) | 
+              Q(description__icontains=value)
+          )
+  ```
+
+## 2. Enhanced Backend Components
+
+### Search Endpoint (`/search/`)
+```python
+# views.py
+class AdaptiveSearchView(TemplateView):
+    template_name = "search/results.html"
+    
+    def get_queryset(self):
+        return Park.objects.all()
+
+    def get_filterset(self):
+        return ParkFilter(self.request.GET, queryset=self.get_queryset())
+
+    def get_context_data(self, **kwargs):
+        context = super().get_context_data(**kwargs)
+        filterset = self.get_filterset()
+        context['results'] = filterset.qs
+        context['filters'] = filterset.form
+        return context
+```
+
+## 3. Plugin Integration
+
+### Recommended django-filter Extensions
+```python
+# settings.py
+INSTALLED_APPS += [
+    'django_filters',
+    'django_filters_addons',  # For custom widgets
+    'rangefilter',            # For date/number ranges
+]
+
+# filters.py
+class EnhancedParkFilter(ParkFilter):
+    rating_range = django_filters.RangeFilter(field_name='rating')
+    features = django_filters.MultipleChoiceFilter(
+        field_name='features__slug',
+        widget=HorizontalCheckboxSelectMultiple,
+        lookup_expr='contains'
+    )
+    
+    class Meta(ParkFilter.Meta):
+        fields = ParkFilter.Meta.fields + ['rating_range', 'features']
+```
+
+## 4. Frontend Filter Rendering
+```html
+<!-- templates/search/filters.html -->
+<form hx-get="/search/" hx-target="#search-results" hx-swap="outerHTML">
+    {{ filters.form.as_p }}
+    <button type="submit">Apply Filters</button>
+</form>
+
+<!-- Dynamic filter updates -->
+<div hx-trigger="filter-update from:body" 
+     hx-get="/search/filters/" 
+     hx-swap="innerHTML">
+</div>
+```
+
+## 5. Benefits of django-filter Integration
+- Built-in validation for filter parameters
+- Automatic form generation
+- Complex lookup expressions
+- Reusable filter components
+- Plugin ecosystem support
+
+## 6. Security Considerations
+- Input sanitization using django's built-in escaping
+- Query parameter whitelisting via FilterSet definitions
+- Rate limiting on autocomplete endpoint (using django-ratelimit)
+- Permission-aware queryset filtering
+
+## 7. Performance Optimization
+- Select related/prefetch_related in FilterSet querysets
+- Caching filter configurations
+- Indexing recommendations for filtered fields
+- Pagination integration with django-filter
+
+## 8. Testing Strategy
+- FilterSet validation tests
+- HTMX interaction tests
+- Cross-browser filter UI tests
+- Performance load testing
+
+## 9. Style Integration
+- Custom filter form templates matching Tailwind design
+- Responsive filter controls grid
+- Accessible form labels and error messages
+- Dark mode support
+
+## 10. Expansion Framework
+- Registry pattern for adding new FilterSets
+- Dynamic filter discovery system
+- Plugin configuration templates
+- Analytics integration points

search/admin.py

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+from django.contrib import admin
+
+# Register your models here.

search/apps.py

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+from django.apps import AppConfig
+
+
+class SearchConfig(AppConfig):
+    default_auto_field = "django.db.models.BigAutoField"
+    name = "search"

search/models.py

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+from django.db import models
+
+# Create your models here.

search/tests.py

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+from django.test import TestCase
+
+# Create your tests here.

search/views.py

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+from django.shortcuts import render
+
+# Create your views here.