欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  IT编程

Django Admin实现三级联动(省市区)

程序员文章站 2022-03-01 15:12:44
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 View和url Admin 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 ......

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.
Django Admin实现三级联动(省市区)

Django Admin实现三级联动(省市区)

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 %}
    <script type="text/javascript"
            id="django-admin-form-add-constants"
            src="{% static 'admin/js/change_form.js' %}"
            {% if adminform and add %}
                data-model-name="{{ opts.model_name }}"
            {% endif %}>
    </script>

    <script type="text/javascript">
        (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('<option value>' + '---------' + '</option>');
                    $.each(a_info, function(i, area) {
                        area_info.append('<option value="' + area + '">' + area + '</option>')
                    });
                    {% 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('<option value>' + '---------' + '</option>');
                    $.each(c_info, function(i, city) {
                        city_info.append('<option value="' + city + '">' + city + '</option>')
                    });
                    {% 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('<option value>' + '---------' + '</option>');
                $.each(p_info, function(i, province) {
                    province_info.append('<option value="' + province + '">' + province + '</option>')
                });
                {% if change %}
                    $("#id_province").find("option:contains({{ original.province }})").attr('selected', true);
                    $("#id_province").trigger("change");
                {% endif %}
            });
        })(django.jQuery);
    </script>

参考: