Autocomplete from GIS list of CRSs..

..using django-autocomplete-light, in both the admin area and the
end-user form

Closes #32

apps/map/views.py

@@ -1,11 +1,15 @@
 from django.core.mail import send_mail
 from django.conf import settings
+from django.db.models import Q
 from django.views.generic import DetailView
 from django.views.generic.base import TemplateView
 from django.views.generic.edit import CreateView
 from django.contrib.auth.mixins import LoginRequiredMixin
 from django.urls import reverse
-from .models import CaseStudy
+
+from dal import autocomplete
+
+from .models import CaseStudy, SpatialRefSys
 from .forms import ShortCaseStudyForm, LongCaseStudyForm
 
 NOTIFY_MESSAGE = """
@@ -72,3 +76,16 @@ class CaseStudyDetail(DetailView):
     template_name = "map/detail.html"
     model = CaseStudy
     context_object_name = "case_study"
+
+
+class SpatialRefSysAutocomplete(autocomplete.Select2QuerySetView):
+    def get_queryset(self):
+        qs = SpatialRefSys.objects.all()
+
+        if self.q:
+            qs = qs.filter(
+                Q(auth_name__icontains=self.q)
+                | Q(auth_srid__icontains=self.q)
+            )
+
+        return qs