1. 为什么要开发路飞学城？提供在线教育的学成率；特色：学，看视频，单独录制增加趣味性。练，练习题改，改学生代码管，管理测，阶段考核线下：8次留级考试2. 组织架构- 开发- 后端- 前端- 测试- UI- 产品经理- 运维- 销售- 运营- 全职导师- 行政- 财务3. 项目架构- 主站- nginx + uwsgi + django - 导师后台- 管理后台4. 开发周期和人数2017-07：开始做2017-11：第一版上线2018-02：功能完善和迭代2018-03：题库系统/wiki5. 前后端分离vue.jsrestful api 6. 跨域相关正式：无测试：有跨域，使用CORS解决；- 简单请求- 复杂请求7. 你负责项目中的什么？课程购物车深科技15个接口

import json
import redis
from django.conf import settings
from rest_framework.views import APIView
from rest_framework.viewsets import ViewSetMixin
from rest_framework.response import Response
from api.utils.auth import LuffyAuthentication
from api import models
from api.utils.response import BaseResponse# CONN = redis.Redis(host='192.168.11.61',port=6379)
from django_redis import get_redis_connection
CONN = get_redis_connection("default")class CourseNotExistsException(Exception):def __init__(self,msg):self.msg = msgclass PaymentView(ViewSetMixin,APIView):authentication_classes = [LuffyAuthentication,]def create(self,request,*args,**kwargs):"""在结算中添加课程:param request::param args::param kwargs::return:"""response = BaseResponse()try:# 1.接受用户选择的要结算的课程ID列表userid = request.user.id# [1,3,55]courseid_list = request.data.get('courseid')  # 拿到的是一个列表# 2.清空当前用户request.user.id结算中心的数据pattern = 'payment_%s_%s' % (userid, '*')# 方式一：key_list = CONN.keys(pattern)CONN.delete(*key_list)# 方式二：# for key in CONN.keys(pattern):#     CONN.delete(key)  # 清空结算中心# 3.循环要加入结算中的所有课程ID列表import datetimetoday = datetime.date.today()for course_id in courseid_list:shop_car_key = "shopping_car_%s_%s" %(userid,course_id)# 3.1 判断购物车中是否存在此keyif not CONN.exists(shop_car_key):raise CourseNotExistsException('购物车中不存在该课程')# 3.2 去购物车中获取课程信息id = CONN.hget(shop_car_key, 'id').decode('utf-8')name = CONN.hget(shop_car_key, 'name').decode('utf-8')img = CONN.hget(shop_car_key, 'img').decode('utf-8')default_price_id = CONN.hget(shop_car_key, 'default_price_id').decode('utf-8')price_policy_dict = json.loads(CONN.hget(shop_car_key, 'price_policy_dict').decode('utf-8'))price_policy = price_policy_dict[default_price_id]"""{'id':1,'price':99.99,'valid_period':60,'valid_period_display':2个月}"""# 3.3 根据课程ID获取该课程可用的优惠券
coupon_list = models.CouponRecord.objects.filter(account_id=userid,status=0,coupon__valid_begin_date__lte=today,coupon__valid_end_date__gte=today,coupon__object_id=course_id,coupon__content_type__model='course')# 加入结算中心"""for course_id in 用户提交课程ID列表:3.1 根据course_id,request.user.id去购物车中获取商品信息：商品名称、图片、价格（id,周期,显示周期,价格）3.2 根据course_id,request.user.id获取 - 当前用户- 当前课程- 可用的优惠券加入结算中心提示：可以使用contenttypes"""# 4.获取当前用户所有未绑定课程优惠券#       - 未使用#       - 有效期内#       - 加入结算中心：glocal_coupon_用户ID
global_coupon_list = models.CouponRecord.objects.filter(account_id=userid,status=0,coupon__valid_begin_date__lte=today,coupon__valid_end_date__gte=today,coupon__content_type__isnull=True)# 加入到结算中心except CourseNotExistsException as e:response.code = 1010response.error = e.msgexcept Exception as e:passreturn Response('...')def list(self,request,*args,**kwargs):"""查看结算中心:param request::param args::param kwargs::return:"""# 1. 根据用户ID去结算中心获取该用户所有要结算课程# 2. 根据用户ID去结算中心获取该用户所有可用未绑定课程的优惠券# 3. 用户表中获取贝里余额# 4. 以上数据构造成一个字典return Response('...')def update(self,request,*args,**kwargs):"""更新优惠券:param request::param args::param kwargs::return:"""# 1. 获取用户提交：#       course_id=1,coupon_id=3#       course_id=0,coupon_id=6# 2. course_id=1 --> 去结算中心获取当前用户所拥有的绑定当前课程优惠，并进行校验#       - 成功：defaul_coupon_id=3#       - 否则：非法请求# 2. course_id=0 --> 去结算中心获取当前用户所拥有的未绑定课程优惠，并进行校验#       - 成功：defaul_coupon_id=3#       - 否则：非法请求

import json
import redis
from django.conf import settings
from rest_framework.views import APIView
from rest_framework.viewsets import ViewSetMixin
from rest_framework.response import Response
from api.utils.auth import LuffyAuthentication
from api import models
from api.utils.response import BaseResponse# CONN = redis.Redis(host='192.168.11.61',port=6379)
from django_redis import get_redis_connection
CONN = get_redis_connection("default")"""
{payment_2_1:{id:1,name:'Python基础',img:'xxx',price:99.99,period:90,period_display:3个月,default_coupon_id:0,coupon_dict:{'1':{'type':0,'text':'立减','money_equivalent_value':'xx','off_percent':'xx','minimum_consume'},'2':{'type':0,'text':'立减','money_equivalent_value':'xx','off_percent':'xx','minimum_consume'},'3':{'type':0,'text':'立减','money_equivalent_value':'xx','off_percent':'xx','minimum_consume'},}},payment_2_3:{id:2,name:'Python进阶',img:'xxx',price:99.99,period:90,period_display:3个月,default_coupon_id:0,coupon_dict:{'1':{'type':0,'text':'立减','money_equivalent_value':'xx','off_percent':'xx','minimum_consume'},'2':{'type':0,'text':'立减','money_equivalent_value':'xx','off_percent':'xx','minimum_consume'},'3':{'type':0,'text':'立减','money_equivalent_value':'xx','off_percent':'xx','minimum_consume'},}},global_coupon_2:{'1':{'type':0,'text':'立减','money_equivalent_value':'xx','off_percent':'xx','minimum_consume'},'2':{'type':0,'text':'立减','money_equivalent_value':'xx','off_percent':'xx','minimum_consume'},'3':{'type':0,'text':'立减','money_equivalent_value':'xx','off_percent':'xx','minimum_consume'},}
}"""class OrderView(ViewSetMixin,APIView):authentication_classes = [LuffyAuthentication, ]def create(self,request,*args,**kwargs):"""立即支付:param args::param kwargs::return:"""response = BaseResponse()try:# 1. 接收用户发送的数据"""{'balance':1000,'alipay':228 }"""balance = request.data.get('balance')alipay = request.data.get('alipay')# 2. 检验贝里余额是否够用if request.user.balance < balance:raise Exception('贝里余额不足')# 3.获取结算中心的每个课程信息并应用优惠券"""3.1 获取当前用户结算中心的所有keykey = "payment_%s*" %request.user.idkey_list = CONN.keys(key)total_price = 0discount = 0coupon_id_list = []course_dict = {}3.2 根据key获取结算中心的课程for key in key_list:id = CONN.hget(key,'id').decode()name = CONN.hget(key,'name').decode()price = CONN.hget(key,'price').decode()period = CONN.hget(key,'period').decode()default_coupon_id = CONN.hget(key,'default_coupon_id').decode()coupon_dict = json.loads(CONN.hget(key,'coupon_dict').decode())# 用于计算总原价total_price += priceif default_coupon_id == 0:# 未使用discount += 0else:# 使用优惠券if coupon_dict['type'] == 0:    discount += price if coupon_dict['money_equivalent_value'] > price else coupon_dict['money_equivalent_value']elif coupon_dict['type'] == 1:pass elif coupon_dict['type'] == 2:discount += price * （100-折扣）/ 100coupon_id_list.append(default_coupon_id)course_dict[id] = {id = CONN.hget(key,'id').decode()name = CONN.hget(key,'name').decode()price = CONN.hget(key,'price').decode()period = CONN.hget(key,'period').decode()default_coupon_id = CONN.hget(key,'default_coupon_id').decode(),price:999,discount:99,}3"""# 4.处理未绑定课程的优惠券"""4.1 去redis中获取 global_coupon_2default_coupon_id = CONN.hget('global_coupon_2','default_coupon_id')coupon_dict = CONN.hget('global_coupon_2','coupon_dict')4.2 判断是否使用优惠券if default_coupon_id == 0:passelse:# 使用优惠券if coupon_dict['type'] == 0:    discount += price if coupon_dict['money_equivalent_value'] > price else coupon_dict['money_equivalent_value']elif coupon_dict['type'] == 1:pass elif coupon_dict['type'] == 2:discount += price * （100-折扣）/ 100coupon_id_list.append(default_coupon_id)"""# 5. 判断是否：total_price-discount-balance/10 = alipay# total_price = 0# discount = 0# balance# alipay# raise Exception('价格对不上')# 6. 生成订单"""with transcation.atomic():6.1  obj = models.Order.objects.create(...)6.2  创建多个订单详细for k,v in course_dict.items():detail = OrderDetail.objects.create(order=obj)EnrolledCourse.objects.create(..,order_detail=detail)6.3 更新优惠券count = models.CouponRecord.objects.filter(id__in=coupon_id_list).update(status=2)if count != len(coupon_id_list):报错..6.4 更新贝里余额models.account.objects.filter(id=request.user.id).update(balance=F('balance')-balance)6.5 创建贝里转账记录models.TransactionRecord.objects.create(,,balance)"""# 7. 生成去支付宝支付的连接except Exception as e:pass

if default_coupon_id == 0:pass
else:# 使用优惠券if coupon_dict['type'] == 0:    discount += price if coupon_dict['money_equivalent_value'] > price else coupon_dict['money_equivalent_value']elif coupon_dict['type'] == 1:pass elif coupon_dict['type'] == 2:discount += price * （100-折扣）/ 100coupon_id_list.append(default_coupon_id)