Django Admin实现三级联动的示例代码(省市区)

框架(架构)  /  管理员 发布于 7年前   238

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

# viewsLOCATION = {'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)  # urlsfrom person.views import choose_province, choose_city, choose_districturlpatterns = [  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="https:/article/{% 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: https:///article/142409.htm

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