python - 从 Django 中的 FilteredSelectMultiple 小部件获取所选值

Question

在 Django admin 中，有谁知道在保存表单时如何从 FilteredSelectMultiple 小部件中获取所选值？

class ControllerForm(forms.ModelForm):
terminal = forms.ModelMultipleChoiceField(queryset=[])

    def __init__(self, *args, **kwargs):
        super(ControllerForm, self).__init__(*args, **kwargs)
        self.fields['terminal'].widget = widgets.FilteredSelectMultiple('terminals', False)
        self.fields['terminal'].help_text = "Select the terminals which are to be added to the group."
        self.fields['terminal'].required = False
        self.fields['terminal'].label = "Select terminal(s)"
        self.fields['terminal'].choices = [(t.id, str(t)) for t in Terminal.objects.filter(associated=False)]
    class Meta:
        model = Controller
class ControllerAdmin(admin.ModelAdmin):
    """
    Controller admin form customization.
    """
    list_display = ('name', 'group',)

    form = ControllerForm

admin.site.register(Controller, ControllerAdmin)

编辑:我想我可以访问 save_model 方法中的值。 (https://docs.djangoproject.com/en/dev/ref/contrib/admin/#django.contrib.admin.ModelAdmin.save_model)

Answer 1

我已经找到解决方案了。使用 ModelAdmin 中提供的 save_model 方法，可以访问 form.cleaned_data 字典中选定的对象。

def save_model(self, request, obj, form, change):

    for terminal in form.cleaned_data['terminal']:
        ...

    obj.save()

结账 https://docs.djangoproject.com/en/dev/ref/contrib/admin/#django.contrib.admin.ModelAdmin.save_model和 https://docs.djangoproject.com/en/dev/topics/forms/?from=olddocs有关此方法的更多详细信息。

谢谢