Autocomplete com Yawd Admin

admin.py

from forms import SideBarExampleAdminForm, WidgetsExampleAdminForm

class WidgetsExampleAdmin(admin.ModelAdmin):
    form = WidgetsExampleAdminForm
    
admin_site.register(WidgetsExample, WidgetsExampleAdmin)

forms.py

from django import forms
from django.core.urlresolvers import reverse_lazy
from yawdadmin.widgets import AutoCompleteTextInput


class WidgetsExampleAdminForm(forms.ModelForm):
    class Meta:
        widgets = {
            'autocomplete': AutoCompleteTextInput(source=\
                                    reverse_lazy('autocomplete-example-view')),
        } 

models.py

class WidgetsExample(models.Model):
    autocomplete = models.CharField(help_text='This widget suggests values based on '\
                                    'other records',
                                    max_length=50)

urls.py

from demo_application.views import TypeaheadProfessionsView

urlpatterns = patterns('',
    #register the yawd-admin URLs
    url(r'^autocomplete-example/', TypeaheadProfessionsView.as_view(), name='autocomplete-example-view')
)

views.py

import json
from django.views.generic import View
from django.http.response import HttpResponse
from django.core.exceptions import PermissionDenied
from models import WidgetsExample

# Create your views here.
class TypeaheadProfessionsView(View):
    def get(self, request, *args, **kwargs):
        if not request.is_ajax():
            raise PermissionDenied

        query = request.GET.get('query', None)
        results = []

        for el in WidgetsExample.objects.values_list('autocomplete', flat=True).distinct():
            if el and (not query or el.find(query.decode('utf-8')) != -1):
                results.append(el)

        return HttpResponse(json.dumps({'results': results}))