命名：
项目/文件/函数 -> 小写+下划线
类 -> 驼峰

pycharm运行不起来

简单逻辑先处理

 ret = {"code": 1000}
 try:
     user = request.data.get('user')
     pwd = request.data.get('pwd')
     user = Account.objects.filter(username=user, password=pwd).first()
     if not user:
         ret['code'] = 1001
         ret['error'] = '用户名或密码错误'
         return Response(ret)
     uid = str(uuid.uuid4())
     UserAuthToken.objects.update_or_create(user=user, defaults={'token': uid})
     ret['token'] = uid

 except Exception as e:
     ret['code'] = 1003

 return Response(ret)

特殊异常捕获

封装响应对象

class BaseResponse(object):

 def __init__(self):
 	self.code = 1000
 	self.data = None
 	self.error = None
 @property
 def dict(self):
 	return self.__dict__

简单接口时，可以使用rest framework封装好的功能

 class CourseViewSet(mixins.ListModelMixin,mixins.RetrieveModelMixin,GenericViewSet):
 	queryset = models.Course.objects.all()
 	serializer_class = CourseViewSetSerializers

接口如何编写？
业务：
返回所有：

 	http://127.0.0.1:8088/api/v1/course/1/
 	
 多个接口:
 	http://127.0.0.1:8088/api/v1/course/1/
 	
 	http://127.0.0.1:8088/api/v1/section/?course=1
 	
 	http://127.0.0.1:8088/api/v1/chapter/?course=1

django查询

 class AgreeView(ViewSetMixin, APIView):

 def post(self, request, *args, **kwargs):
 	"""
 	点赞
 	:param request:
 	:param args:
 	:param kwargs:
 	:return:
 	"""
 	ret = {'code': 1000, 'data': None}
 	try:
 		pk = kwargs.get('pk')
 		# 方式一：更新赞数
 		obj = Article.objects.filter(id=pk).first()
 		obj.agree_num = obj.agree_num + 1
 		obj.save()
 		# 方式二：更新赞数
 		# F，更新数据库字段
 		# Q, 构造复杂条件
 		# from django.db.models import F,Q
 		# v = Article.objects.filter(id=pk).update(agree_num=F("agree_num") + 1)
 		# print(v)
 		ret['data'] = obj.agree_num
 	except Exception as e:
 		ret['code'] = 1001
 		ret['error'] = '点赞失败'
 	return Response(ret)