规范;
djangorestfremework框架
地址：//www.django-rest-framework.org/

接口: 后端返回的是json格式的数据
资源：操作数据库中学生的信息，资源叫作student
请求方式：GET(查询)/POST(创建)/PUT(更新全部)/PATCH(更新部分)/DELETE(删除，路由中要有id参数)

定义路由
获取路由：couter = SimpleRouter()
注册资源：couter.register('student', StudentView)
获取urls地址：couter.urls
解析urls地址：urlpatterns += counter.urls

定义处理路由的业务逻辑

class StudentView(viewsets.GenericViewSet,
                  mixins.ListModelMixin,
                  mixins.DestroyModelMixin,
                  mixins.CreateModelMixin,
                  mixins.UpdateModelMixin,
                  mixins.RetrieveModelMixin):
    # 查询返回的数据
    queryset = Student.objects.filter(is_delete=0)
    # 序列化返回的文章的数据
    serializer_class = StudentSerializer

    def perform_destroy(self, instance):
        instance.is_delete = 1
        instance.save()


class StudentSerializer(serializers.ModelSerializer):
    class Meta:
        model = Student
        fileds = ['id', 'name']


AJAX:

{% csrf_token %}
var csrf = $('input[name="csrfmiddlewaretoken"]')
$.ajax({
            url: '/api/article/art/',
            type: 'GET',
            dataType: 'json',
            success: function(data) {
                console.log(data)
                for(var i=0; i<data.length; i+=1) {
                    s = '<p>标题：' + data[i].title;
                    s += '&emsp;描述：' + data[i].desc;
                    s += '&emsp;内容：' + data[i].content;
                    s += '<a href="javascript:;" onclick="del_art(' + data[i].id + ')">删除</a></p>';
                    $('#content').append(s)
                }
            },
            error: function(data) {
                alert('失败')
            }
        });

简化：
$.get(url, function(msg)) {}