Generic autocompletion view

shared/views.py

@@ -1,4 +1,9 @@
+from collections import namedtuple
+
 from dal import autocomplete
+from django.core.exceptions import ImproperlyConfigured
+from django.http import Http404
+from django.views.generic import TemplateView
 
 from shared.autocomplete import ModelSearch
 
@@ -9,3 +14,44 @@ class Select2QuerySetView(ModelSearch, autocomplete.Select2QuerySetView):
     def get_queryset(self):
         keywords = self.q.split()
         return super().search(keywords)
+
+
+Section = namedtuple("Section", ("name", "verbose_name", "entries"))
+Entry = namedtuple("Entry", ("verbose_name", "link"))
+
+
+class AutocompleteView(TemplateView):
+    template_name = "shared/search_results.html"
+    search_composer = None
+
+    def get_search_composer(self):
+        if self.search_composer is None:
+            raise ImproperlyConfigured("Please specify a search composer")
+        return self.search_composer
+
+    def get_context_data(self, **kwargs):
+        ctx = super().get_context_data(**kwargs)
+        if "q" not in self.request.GET:
+            raise Http404
+        q = self.request.GET["q"]
+        ctx["q"] = q
+        ctx["results"] = self.search(keywords=q.split())
+        return ctx
+
+    def search(self, keywords):
+        search_composer = self.get_search_composer()
+        raw_results = search_composer.search(keywords)
+        sections = []
+        for name, unit in search_composer.search_units:
+            entries = [
+                Entry(
+                    verbose_name=unit.result_verbose_name(res),
+                    link=unit.result_link(res),
+                )
+                for res in raw_results[name]
+            ]
+            if entries:
+                sections.append(
+                    Section(name=name, verbose_name=unit.verbose_name, entries=entries)
+                )
+        return sections