1👍
class AccountDetailsForm(forms.Form):
...
adminuser = forms.ModelChoiceField(queryset=User.objects.all())
def __init__(self, *args, **kwargs):
accountid = kwargs.pop('accountid', None)
super(AccountDetailsForm, self).__init__(*args, **kwargs)
if accountid:
self.fields['adminuser'].queryset = User.objects.filter(account=accountid)
form = AccountDetailsForm(accountid=3)
Source:stackexchange.com