Select A Valid Choice Modelchoicefield

Whenever im running form.is_valid() i get the error: Select a valid choice. That choice is not one of the available choices. Here is what I do in my view: timeframes = HostTim

Solution 1:

According to documentation ModelChoiceField its Default widget is Selectdoc

If you want to select multiple values you must use ModelMultipleChoiceField like this :

timeframes = forms.ModelMultipleChoiceField(queryset=HostTimeFrame.objects.none(), widget=forms.CheckboxSelectMultiple,empty_label=None)

Solution 2:

This seems to be a bug, my workaround was creating my own Choice field and overriding the to_python() method:

classCustomModelChoiceField(ModelChoiceField):
    defto_python(self, value):
        if value in self.empty_values:
            returnNonetry:
            key = self.to_field_name or'pk'#--------hacky bugfix---------------iftype(value) == list:
                value = value[0]
            value = self.queryset.get(**{key: value})
        except (ValueError, TypeError, self.queryset.model.DoesNotExist):
            raise ValidationError(self.error_messages['invalid_choice'], code='invalid_choice')
        return value