Django Admin实现三级联动(省市区)

通过自定义Admin的模板文件实现省市区的三级联动.要求创建记录时,根据省>市>区的顺序选择依次显示对应数据.
修改记录时默认显示已存在的数据.

Model

class Member(models.Model):
    name = models.CharField(max_length=100, verbose_name='姓名')
    province = models.CharField(max_length=100, null=True, blank=True, verbose_name='省份')
    city = models.CharField(max_length=100, null=True, blank=True, verbose_name='城市')
    district = models.CharField(max_length=100, null=True, blank=True, verbose_name='区/县')

    class Meta:
        verbose_name_plural = verbose_name = '人员'

    def __str__(self):
        return self.name

View和url

# views
LOCATION = {'吉林省': {'长春市': ['南关区', '朝阳区', '二道区', '绿园区']}}


def choose_province(request):
    province = list(LOCATION.keys())
    return JsonResponse(province, safe=False)


def choose_city(request):
    province = request.GET.get('p')
    cities = list(LOCATION[province].keys())
    return JsonResponse(cities, safe=False)


def choose_district(request):
    province = request.GET.get('p')
    city = request.GET.get('c')
    districts = LOCATION[province][city]
    return JsonResponse(districts, safe=False)
   
# urls
from person.views import choose_province, choose_city, choose_district

urlpatterns = [
    path('province/', choose_province),
    path('city/', choose_city),
    path('district/', choose_district),
    path('admin/', admin.site.urls),
]

Admin

class MemberForm(forms.ModelForm):
    class Meta:
        widgets = {
            'province': forms.Select(),
            'city': forms.Select(),
            'district': forms.Select()
        }

@admin.register(Member)
class MemberAdmin(admin.ModelAdmin):
    form = MemberForm
    fields = ('name', ('province', 'city', 'district'))
    list_display = ('name', 'province', 'city', 'district')
    change_form_template = 'area.html'

这里需要写一个form将省市区这三个字段显示为单选框.

模板文件

找到django源码中的change_form.html(django/contrib/admin/templates/admin/)文件,复制到app下templates目录中.
在admin中指定自定义的模板文件change_form_template = 'area.html'

{% block admin_change_form_document_ready %}
    

    

参考: https://blog.csdn.net/df_1818/article/details/80109964