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- from django.http import Http404, JsonResponse
- from django.views.generic.list import BaseListView
-
-
- class AutocompleteJsonView(BaseListView):
- """Handle AutocompleteWidget's AJAX requests for data."""
- paginate_by = 20
- model_admin = None
-
- def get(self, request, *args, **kwargs):
- """
- Return a JsonResponse with search results of the form:
- {
- results: [{id: "123" text: "foo"}],
- pagination: {more: true}
- }
- """
- if not self.model_admin.get_search_fields(request):
- raise Http404(
- '%s must have search_fields for the autocomplete_view.' %
- type(self.model_admin).__name__
- )
- if not self.has_perm(request):
- return JsonResponse({'error': '403 Forbidden'}, status=403)
-
- self.term = request.GET.get('term', '')
- self.paginator_class = self.model_admin.paginator
- self.object_list = self.get_queryset()
- context = self.get_context_data()
- return JsonResponse({
- 'results': [
- {'id': str(obj.pk), 'text': str(obj)}
- for obj in context['object_list']
- ],
- 'pagination': {'more': context['page_obj'].has_next()},
- })
-
- def get_paginator(self, *args, **kwargs):
- """Use the ModelAdmin's paginator."""
- return self.model_admin.get_paginator(self.request, *args, **kwargs)
-
- def get_queryset(self):
- """Return queryset based on ModelAdmin.get_search_results()."""
- qs = self.model_admin.get_queryset(self.request)
- qs, search_use_distinct = self.model_admin.get_search_results(self.request, qs, self.term)
- if search_use_distinct:
- qs = qs.distinct()
- return qs
-
- def has_perm(self, request, obj=None):
- """Check if user has permission to access the related model."""
- return self.model_admin.has_view_permission(request, obj=obj)
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