Add autocomplete functionality for parks: implement BaseAutocomplete class and integrate with forms

parks/forms.py

@@ -1,7 +1,54 @@
 from django import forms
 from decimal import Decimal, InvalidOperation, ROUND_DOWN
+from autocomplete import AutocompleteWidget
+
+from core.forms import BaseAutocomplete
 from .models import Park
 from location.models import Location
+from .querysets import get_base_park_queryset
+
+
+class ParkAutocomplete(BaseAutocomplete):
+    """Autocomplete for searching parks.
+    
+    Features:
+    - Name-based search with partial matching
+    - Prefetches related owner data
+    - Applies standard park queryset filtering
+    - Includes park status and location in results
+    """
+    model = Park
+    search_attrs = ['name']  # We'll match on park names
+    
+    def get_search_results(self, search):
+        """Return search results with related data."""
+        return (get_base_park_queryset()
+                .filter(name__icontains=search)
+                .select_related('owner')
+                .order_by('name'))
+    
+    def format_result(self, park):
+        """Format each park result with status and location."""
+        location = park.formatted_location
+        location_text = f" • {location}" if location else ""
+        return {
+            'key': str(park.pk),
+            'label': park.name,
+            'extra': f"{park.get_status_display()}{location_text}"
+        }
+
+
+class ParkSearchForm(forms.Form):
+    """Form for searching parks with autocomplete."""
+    park = forms.ModelChoiceField(
+        queryset=Park.objects.all(),
+        required=False,
+        widget=AutocompleteWidget(
+            ac_class=ParkAutocomplete,
+            attrs={'class': 'w-full border-gray-300 rounded-lg form-input dark:border-gray-600 dark:bg-gray-700 dark:text-white',
+                   'placeholder': 'Search parks...'}
+        )
+    )
 
 
 class ParkForm(forms.ModelForm):