我们有类似的模型:
Class District:
name = models.CharField()
Class Village:
name = model.CharField()
district = models.Foriegnkey()
Class Location:
name = models.CharField()
village = models.Foreginkey()
我们将Smartmin用于CRUD操作。在创建位置时,在我的表单中,我们显示地区,村庄下拉列表和名称字段(位置名称)。我需要根据地区选择刷新村庄。
在这方面请帮助我。预先感谢
答案 0 :(得分:0)
在一个类似的项目中,我使用了django-autocomplete-light:https://django-autocomplete-light.readthedocs.io/en/master/tutorial.html,它可以从一个下拉菜单到另一个下拉菜单进行级联选择。
我按如下方式使用它:
在forms.py中:
class TripModelForm(forms.ModelForm):
plate_number = forms.ModelChoiceField(
queryset=TruckUnit.objects.all().order_by('plate_number'),
widget=autocomplete.ModelSelect2(url='plate_number_autocomplete',
forward=['hauler'])
)
driver = forms.ModelChoiceField(
queryset=Driver.objects.all().order_by('name'),
widget=autocomplete.ModelSelect2(url='driver_autocomplete',
forward=['hauler'])
)
在views.py中:
from dal import autocomplete
class PlateNumberAutocomplete(autocomplete.Select2QuerySetView):
def get_queryset(self):
if not self.request.user.is_authenticated:
return TruckUnit.objects.none()
qs = TruckUnit.objects.all().order_by('plate_number')
hauler = self.forwarded.get('hauler', None)
if hauler:
qs = qs.filter(hauler=hauler)
if self.q:
qs = qs.filter(plate_number__istartswith=self.q)
return qs
class DriverAutocomplete(autocomplete.Select2QuerySetView):
def get_queryset(self):
if not self.request.user.is_authenticated:
return Driver.objects.none()
qs = Driver.objects.all().order_by('name')
hauler = self.forwarded.get('hauler', None)
if hauler:
qs = qs.filter(hauler=hauler)
if self.q:
qs = qs.filter(name__istartswith=self.q)
return qs
在urls.py
中urlpatterns += [
path('plate-number-autocomplete/', views.PlateNumberAutocomplete.as_view(), name='plate_number_autocomplete'),
path('driver-autocomplete/', views.DriverAutocomplete.as_view(), name='driver_autocomplete'),
]