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

core/forms.py

@@ -0,0 +1,39 @@
+"""Core forms and form components."""
+from django.conf import settings
+from django.core.exceptions import PermissionDenied
+from django.utils.translation import gettext_lazy as _
+
+from autocomplete import Autocomplete
+
+
+class BaseAutocomplete(Autocomplete):
+    """Base autocomplete class for consistent autocomplete behavior across the project.
+    
+    This class extends django-htmx-autocomplete's base Autocomplete class to provide:
+    - Project-wide defaults for autocomplete behavior
+    - Translation strings
+    - Authentication enforcement
+    - Sensible search configuration
+    """
+    # Search configuration
+    minimum_search_length = 2  # More responsive than default 3
+    max_results = 10  # Reasonable limit for performance
+
+    # UI text configuration using gettext for i18n
+    no_result_text = _("No matches found")
+    narrow_search_text = _("Showing %(page_size)s of %(total)s matches. Please refine your search.")
+    type_at_least_n_characters = _("Type at least %(n)s characters...")
+
+    # Project-wide component settings
+    placeholder = _("Search...")
+
+    @staticmethod
+    def auth_check(request):
+        """Enforce authentication by default.
+        
+        This can be overridden in subclasses if public access is needed.
+        Configure AUTOCOMPLETE_BLOCK_UNAUTHENTICATED in settings to disable.
+        """
+        block_unauth = getattr(settings, 'AUTOCOMPLETE_BLOCK_UNAUTHENTICATED', True)
+        if block_unauth and not request.user.is_authenticated:
+            raise PermissionDenied(_("Authentication required"))