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 %}

src="{% static 'admin/js/change_form.js' %}"

{% if adminform and add %}

data-model-name="{{ opts.model_name }}"

{% endif %}>

(function($) {

$('#id_city').change(function() {

let p_id = $('#id_province').val();

let c_id = $('#id_city').val();

$.get('/district/', {"p": p_id, "c": c_id }, function(a_info) {

var area_info = $('#id_district').empty().append('' + '---------' + '');

$.each(a_info, function(i, area) {

area_info.append('' + area + '')

});

{% if change %}

$("#id_district").find("option:contains({{ original.district }})").attr('selected', true);

{% endif %}

});

});

$('#id_province').change(function() {

let p_id = $('#id_province').val();

$.get('/city/', { 'p': p_id }, function(c_info) {

var city_info = $('#id_city').empty().append('' + '---------' + '');

$.each(c_info, function(i, city) {

city_info.append('' + city + '')

});

{% if change %}

$("#id_city").find("option:contains({{ original.city }})").attr('selected', true);

$("#id_city").trigger("change");

{% endif %}

});

});

$.get('/province/', function(p_info) {

var province_info = $('#id_province').empty().append('' + '---------' + '');

$.each(p_info, function(i, province) {

province_info.append('' + province + '')

});

{% if change %}

$("#id_province").find("option:contains({{ original.province }})").attr('selected', true);

$("#id_province").trigger("change");

{% endif %}

});

})(django.jQuery);

参考: https://www.jb51.net/article/142409.htm

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本文标题: Django Admin实现三级联动的示例代码(省市区)

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