Python 如何将选择动态传递到django表单中

如何在表单中动态设置选项？这些选择将根据用户选择的路线而改变

forms.py

class RegistrationForm(forms.Form):

    options = ()
    camp_dates = forms.MultipleChoiceField(widget=forms.CheckboxSelectMultiple,
                                         choices=options)

def camp_datailed_view(request,slug):

 options = (
    ("1", "Jan"),
    ("2", "Feb"),
    )

 form = RegistrationForm()

 ##How can I pass options into the form field camp_dates as selectable choices



def register(request):

    form = RegistrationForm()

    if request.method == 'POST':

     # create a form instance and populate it with data from the request:
     form = RegistrationForm(request.POST)

     # check whether it's valid:
     if (form.is_valid()):

         return render(request,'camp_registration.html')
     else:
      print (form.errors)

      return HttpResponse("not working")``

我想从我的view.py文件中设置选项，以便可以动态设置这些选项

视图.py

class RegistrationForm(forms.Form):

    options = ()
    camp_dates = forms.MultipleChoiceField(widget=forms.CheckboxSelectMultiple,
                                         choices=options)

def camp_datailed_view(request,slug):

 options = (
    ("1", "Jan"),
    ("2", "Feb"),
    )

 form = RegistrationForm()

 ##How can I pass options into the form field camp_dates as selectable choices



def register(request):

    form = RegistrationForm()

    if request.method == 'POST':

     # create a form instance and populate it with data from the request:
     form = RegistrationForm(request.POST)

     # check whether it's valid:
     if (form.is_valid()):

         return render(request,'camp_registration.html')
     else:
      print (form.errors)

      return HttpResponse("not working")``

你能行

class RegistrationForm(forms.Form):
    camp_dates = forms.MultipleChoiceField(
        widget=forms.CheckboxSelectMultiple,
        choices=()
    )

    def __init__(self, *args, **kwargs):
        camp_dates_choices = kwargs.pop('camp_dates_choices', ())
        super().__init__(*args, **kwargs)
        self.fields['camp_dates'].choices = camp_dates_choices


form = RegistrationForm(camp_dates_choices=<DYNAMIC_VALUE>)

班级注册表（forms.Form）：
camp_dates=forms.MultipleChoiceField(
widget=forms.CheckboxSelectMultiple，
选项=（）
)
定义初始化（self，*args，**kwargs）：
camp_dates_choices=kwargs.pop（'camp_dates_choices'，（））
super（）
self.fields['camp\u dates'].choices=camp\u dates\u choices
表格=注册表格（营地日期选择=）

在任何人提供帮助之前，需要提供更多信息。首先，您是否收到任何错误？您当前的状态是什么？此外，您是否将

选项

dict导入

forms.py

类似于

from.views导入选项

，以便此方法可用表单验证抛出错误“选择有效选项”。1不是可用选项之一。您能说明如何传递选项吗？在呈现和验证时，您必须同时传递它们。我已将register函数添加到post中以向您显示验证。您没有将选项传递到表单。应该是

form=RegistrationForm（camp\u-dates\u-choices=）

和post

form=RegistrationForm（request.post，camp\u-dates\u-choices=）

值得注意的是，表单字段在请求之间共享，因此如果使用线程或异步，则需要使用新的多线程安全字段：

self.fields['camp\u-dates']=forms.multipleechoicefield（widget=forms.CheckboxSelectMultiple，choices=camp\u dates\u choices）