feature type ajax-select (with custom lookup class)

gazetteer/places/lookups.py

@@ -0,0 +1,22 @@
+from places.models import FeatureType
+from django.db.models import Q
+
+class FeatureTypeLookup(object):
+
+    def get_query(self,q,request):
+        """ return a query set.  you also have access to request.user if needed """
+        return Contact.objects.filter(Q(code__icontains=q) | Q(name__icontains=q))
+
+    def format_result(self,ftype):
+        """ the search results display in the dropdown menu.  may contain html and multiple-lines. will remove any |  """
+        return u"%s: %s" % (ftype.code, ftype.name,)
+
+    def format_item(self,contact):
+        """ the display of a currently selected object in the area below the search box. html is OK """
+        return unicode(contact)
+
+    def get_objects(self,ids):
+        """ given a list of ids, return the objects ordered as you would like them on the admin page.
+            this is for displaying the currently selected items (in the case of a ManyToMany field)
+        """
+        return FeatureType.objects.filter(pk__in=ids).order_by('code')

gazetteer/settings.py

@@ -88,6 +88,7 @@ AJAX_LOOKUP_CHANNELS = {
     # the simplest case, pass a DICT with the model and field to search against :
     'authority_record' : dict(model='places.authorityrecord', search_field='preferred_name'),
     'time_frame': dict(model='places.timeframe', search_field='description'),
+    'feature_type': ('places.lookups', 'FeatureTypeLookup'),
     # this generates a simple channel
     # specifying the model Track in the music app, and searching against the 'title' field