NoReverseMatch for form using django-select2

Question

I have two view section, one of them saves the fields into database and the other is to autocomplete a field. How can I use both of them in a html template?

First View:

def stock(request):
stocks_form=StocksForm(None)
if request.method == "POST":
    stocks_form =StocksForm(data=request.POST)
    if stocks_form.is_valid():
        instance=stocks_form.save()
        instance.user=request.user
        instance.save()
        messages.success(request,"Successful" ,extra_tags="savestock")
    else:
        messages.error(request, "Error!")

else:
    stocks_form=StocksForm()
return render(request,'BallbearingSite/stock.html',{'stocks_form':stocks_form})

Second View:

class StocksAutocomplete(autocomplete.Select2QuerySetView):
    def get_queryset(self):
        if not self.request.user.is_authenticated():
            return Stocks.objects.none()
        qs = Stocks.objects.all()
        if self.q:
            qs = qs.filter(name__istartswith=self.q)
        return qs

urls.py

url(r'^stock/$',views.stock,name='stock'),
url(r'^stock_autocomplete/$',views.StocksAutocomplete.as_view(create_field='name'),name='stock_autocomplete'),

Project urls.py:

urlpatterns = [
url(r'^$',views.index,name='index'),
url(r'^ajax_select/', include(ajax_select_urls)),
url(r'^admin/BallbearingSite/controlsite/$',views.sendemailview),
url(r'^admin/', include(admin.site.urls)),
url(r'^',include('BallbearingSite.urls', namespace='BallbearingSite')),
url(r'^logout/$',views.user_logout,name='logout'),
url(r'^login/$',views.user_login,name='login'),
url(r'^ckeditor/', include('ckeditor_uploader.urls')),
url('^', include('django.contrib.auth.urls')),
 ]

Template:

<form enctype="multipart/form-data" method="post" >
{% csrf_token %}

{{ stocks_form.as_p }}

<input id="savestocks" type="submit" name="" value="ثبت">
</form>

forms.py:

  class StocksForm(forms.ModelForm):
   class Meta():
    model=Stocks
    fields=('name','number','suffix','brand','comment','price')
    widgets = {
        'name': autocomplete.ModelSelect2(url='stock_autocomplete')
     }
    def clean_name(self):
     return self.cleaned_data['comment'].upper()

It has this error:

NoReverseMatch at /stock/

Reverse for 'stock_autocomplete' with arguments '()' and keyword arguments'{}' not found. 0 pattern(s) tried: []

It highlighted these parts in error :

    {{ stocks_form.as_p }}

and :

   return render(request,'BallbearingSite/stock.html',{'stocks_form':stocks_form})

Answer 1

It looks like you might be missing the namespace from the url. If the stock_autocomplete url is in the BallbearingSite namespace, you would do:

'name': autocomplete.ModelSelect2(url='BallbearingSite:stock_autocomplete')