Replace references to User and Registration with dynamic lookups

This goes through most cases and replaces massive dropdowns or
pairs-of-selects with ajax based lookups using django-selectable. Some
pages go from over 500Kb down to about 30Kb, so it should render th
interface much faster.

Note: only forms in /admin/ are handled by this. Most user facing forms
are already taken care of.

1 files changed, 11 insertions, 2 deletions

diff --git a/postgresqleu/confwiki/admin.py b/postgresqleu/confwiki/admin.py
index 17524326..ffffcb70 100644
--- a/postgresqleu/confwiki/admin.py
+++ b/postgresqleu/confwiki/admin.py
@@ -1,22 +1,32 @@
 from django.contrib import admin
 from django import forms
 
+from selectable.forms.widgets import AutoCompleteSelectWidget, AutoCompleteSelectMultipleWidget
+from postgresqleu.confreg.lookups import RegistrationLookup
+from postgresqleu.util.admin import SelectableWidgetAdminFormMixin
+
 from postgresqleu.confreg.models import Conference, ConferenceRegistration, RegistrationType
 from models import Wikipage, WikipageHistory, WikipageSubscriber
 from models import AttendeeSignup
 
 
-class WikipageAdminForm(forms.ModelForm):
+class WikipageAdminForm(SelectableWidgetAdminFormMixin, forms.ModelForm):
 	class Meta:
 		model = Wikipage
 		exclude = []
+		widgets = {
+			'viewer_attendee': AutoCompleteSelectMultipleWidget(lookup_class=RegistrationLookup),
+			'editor_attendee': AutoCompleteSelectMultipleWidget(lookup_class=RegistrationLookup),
+		}
 
 	def __init__(self, *args, **kwargs):
 		super(WikipageAdminForm, self).__init__(*args, **kwargs)
 		try:
 			self.fields['author'].queryset = ConferenceRegistration.objects.filter(conference=self.instance.conference)
 			self.fields['viewer_attendee'].queryset = ConferenceRegistration.objects.filter(conference=self.instance.conference)
+			self.fields['viewer_attendee'].widget.widget.update_query_parameters({'conference': self.instance.conference.id})
 			self.fields['editor_attendee'].queryset = ConferenceRegistration.objects.filter(conference=self.instance.conference)
+			self.fields['editor_attendee'].widget.widget.update_query_parameters({'conference': self.instance.conference.id})
 
 			self.fields['viewer_regtype'].queryset = RegistrationType.objects.filter(conference=self.instance.conference)
 			self.fields['editor_regtype'].queryset = RegistrationType.objects.filter(conference=self.instance.conference)
@@ -41,7 +51,6 @@ class WikipageSubscriberInline(admin.TabularInline):
 class WikipageAdmin(admin.ModelAdmin):
 	form = WikipageAdminForm
 	inlines = [WikipageHistoryInline, WikipageSubscriberInline]
-	filter_horizontal = ['viewer_attendee', 'editor_attendee', ]
 
 class AttendeeSignupAdminForm(forms.ModelForm):
 	class Meta: