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我已經創建了一個擁有「SelecTimeWidget」 &「SelectDateWidget」 它的工作原理，當我創建一個新的事件罰款，但是當我把它變成一個（更新視圖）創建+與
自定義窗口小部件自定義部件更新我得到一個錯誤
global name 'to_current_timezone' is not defined
我不知道如何去這允許在事件的創建和編輯要使用的小部件。
class EventUpdateView(UpdateView):
form_class = CreateEvent
model = Event
class EventCreateView(CreateView):
form_class = CreateEvent
model = Event
def form_valid(self, form):
Event = form.save(commit=False)
Event.created_by = self.request.user
Event.save()
return HttpResponseRedirect('/calendar/')
class CreateEvent(forms.ModelForm):
class Meta:
model = Event
fields = ['title', 'start', 'end', 'description', 'category']
widgets = {
'start': SelectDateTimeWidget(date_format= '%m/%m/%Y'),
'end': SelectDateTimeWidget(date_format= '%d/%m/%Y')
}
窗件，顯然SelectTimeWidget也是一種習俗之一，但錯誤是導致我「值= to_current_timezone（值）」的代碼中這條線之下
class SelectDateTimeWidget(forms.MultiWidget):
supports_microseconds = False
def __init__(self, attrs=None, date_format=None, time_format=None):
widgets = (SelectDateWidget(empty_label=("Year", "Month", "Day")),
SelectTimeWidget(use_seconds=False))
super(SelectDateTimeWidget, self).__init__(widgets, attrs)
def decompress(self, value):
if value:
value = to_current_timezone(value)
return [value.date(), value.time().replace(microsecond=0)]
return [None, None]
def subwidgets(self, name, value, attrs=None):
if self.is_localized:
for widget in self.widgets:
widget.is_localized = self.is_localized
# value is a list of values, each corresponding to a widget
# in self.widgets.
if not isinstance(value, list):
value = self.decompress(value)
output = []
final_attrs = self.build_attrs(attrs)
id_ = final_attrs.get('id')
for i, widget in enumerate(self.widgets):
try:
widget_value = value[i]
except IndexError:
widget_value = None
if id_:
final_attrs = dict(final_attrs, id='%s_%s' % (id_, i))
output.append(widget.render(name + '_%s' % i, widget_value, final_attrs))
return output
沒有人知道的方式在這附近？