• 路飞学城购买流程API


    路飞学城购买流程API

    购物车

    复制代码
    #!/usr/bin/env python
    # -*- coding:utf-8 -*-
    import json
    from django.core.exceptions import ObjectDoesNotExist
    from django.conf import settings
    
    from rest_framework.views import APIView
    from rest_framework.viewsets import ViewSetMixin
    from rest_framework.viewsets import ModelViewSet
    from rest_framework.response import Response
    
    from repository import models
    
    from api.serializer.payment import ShoppingCarSerializer
    from api.utils.auth.token_auth import LuffyTokenAuthentication
    from api.utils.auth.token_permission import LuffyPermission
    from api.utils import redis_pool
    from api.utils.exception import PricePolicyDoesNotExist
    
    
    class ShoppingCarView(ViewSetMixin, APIView):
        """
        购物车接口
        """
        authentication_classes = [LuffyTokenAuthentication, ]
        permission_classes = [LuffyPermission, ]
    
        def get(self, request, *args, **kwargs):
            """
            根据用户ID获取购物车所有东西
            :param request: 
            :param args: 
            :param kwargs: 
            :return: 
            """
            response = {'code': 1000, 'data': None}
            try:
                product_dict = redis_pool.conn.hget(settings.REDIS_SHOPPING_CAR_KEY, request.user.id)
                if product_dict:
                    product_dict = json.loads(product_dict.decode('utf-8'))
                    response['data'] = product_dict
            except Exception as e:
                response['code'] = 1001
                response['msg'] = "获取购物车列表失败"
    
            return Response(response)
    
        def post(self, request, *args, **kwargs):
            """
            # 根据课程ID获取课程信息以及相关所有价格策略
            chopping_car = {
                request.user.id:{
                    course.id:{
                            title:'xx',
                            img:'xx',
                            choice_policy_id:1,
                            price_policy_dict:{
                                {id:1,price:'9.9', period:'1个月'},
                                {id:2,price:'19.9',period:'3个月'},
                                {id:3,price:'59.9',period:'8个月'},
                            },
                        }
                    },
                    course.id:[
                            title:'xx',
                            img:'xx',
                            choice_policy_id:1,
                            price_policy_dict:{
                                {id:1,price:'9.9', period:'1个月'},
                                {id:2,price:'19.9',period:'3个月'},
                                {id:3,price:'59.9',period:'8个月'},
                            },
                        ]
                    }
                }
            }
            :param request: 
            :param args: 
            :param kwargs: 
            :return: 
            """
    
            response = {'code': 1000, 'msg': None}
            try:
                course_id = int(request.data.get('course_id'))
                policy_id = int(request.data.get('policy_id'))
    
                # 获取课程信息
                course = models.Course.objects.exclude(course_type=2).filter(status=0).get(id=course_id)
    
                # 序列化课程信息,并获取其关联的所有价格策略
                ser = ShoppingCarSerializer(instance=course, many=False)
                product = ser.data
    
                # 判断价格策略是否存在
                policy_exist = False
                for policy in product['price_policy_list']:
                    if policy['id'] == policy_id:
                        policy_exist = True
                        break
                if not policy_exist:
                    raise PricePolicyDoesNotExist()
    
                # 设置默认选中的价格策略
                product.setdefault('choice_policy_id', policy_id)
                # 获取当前用户在购物车中已存在的课程,如果存在则更新,否则添加新课程
                product_dict = redis_pool.conn.hget(settings.REDIS_SHOPPING_CAR_KEY, request.user.id)
                if not product_dict:
                    product_dict = {course_id: product}
                else:
                    product_dict = json.loads(product_dict.decode('utf-8'))
                    product_dict[course_id] = product
                # 将新课程写入到购物车
                redis_pool.conn.hset(settings.REDIS_SHOPPING_CAR_KEY, request.user.id, json.dumps(product_dict))
    
            except ObjectDoesNotExist as e:
                response['code'] = 1001
                response['msg'] = '视频不存在'
            except PricePolicyDoesNotExist as e:
                response['code'] = 1002
                response['msg'] = '价格策略不存在'
            except Exception as e:
                print(e)
                response['code'] = 1003
                response['msg'] = '添加购物车失败'
    
            return Response(response)
    
        def delete(self, request, *args, **kwargs):
            """
            删除购物车中的课程
            :param request: 
            :param args: 
            :param kwargs: 
            :return: 
            """
            response = {'code': 1000}
            try:
                course_id = kwargs.get('pk')
                product_dict = redis_pool.conn.hget(settings.REDIS_SHOPPING_CAR_KEY, request.user.id)
                if not product_dict:
                    raise Exception('购物车中无课程')
                product_dict = json.loads(product_dict.decode('utf-8'))
                if course_id not in product_dict:
                    raise Exception('购物车中无该商品')
                del product_dict[course_id]
                redis_pool.conn.hset(settings.REDIS_SHOPPING_CAR_KEY, request.user.id, json.dumps(product_dict))
            except Exception as e:
                response['code'] = 1001
                response['msg'] = str(e)
    
            return Response(response)
    
        def put(self, request, *args, **kwargs):
            """
            更新购物车中的课程的默认的价格策略
            :param request: 
            :param args: 
            :param kwargs: 
            :return: 
            """
            response = {'code': 1000}
            try:
                course_id = kwargs.get('pk')
                policy_id = request.data.get('policy_id')
                product_dict = redis_pool.conn.hget(settings.REDIS_SHOPPING_CAR_KEY, request.user.id)
                if not product_dict:
                    raise Exception('购物车清单不存在')
                product_dict = json.loads(product_dict.decode('utf-8'))
                if course_id not in product_dict:
                    raise Exception('购物车清单中商品不存在')
    
                policy_exist = False
                for policy in product_dict[course_id]['price_policy_list']:
                    if policy['id'] == policy_id:
                        policy_exist = True
                        break
                if not policy_exist:
                    raise PricePolicyDoesNotExist()
    
                product_dict[course_id]['choice_policy_id'] = policy_id
                redis_pool.conn.hset(settings.REDIS_SHOPPING_CAR_KEY, request.user.id, json.dumps(product_dict))
            except PricePolicyDoesNotExist as e:
                response['code'] = 1001
                response['msg'] = '价格策略不存在'
            except Exception as e:
                response['code'] = 1002
                response['msg'] = str(e)
    
            return Response(response)
    复制代码

    结算

    复制代码
    #!/usr/bin/env python
    # -*- coding:utf-8 -*-
    import json
    import datetime
    from django.conf import settings
    
    from rest_framework.views import APIView
    from rest_framework.response import Response
    
    from api.utils.auth.token_auth import LuffyTokenAuthentication
    from api.utils.auth.token_permission import LuffyPermission
    from api.utils import redis_pool
    from repository import models
    
    
    class PaymentView(APIView):
        """
        去结算接口
        """
        authentication_classes = [LuffyTokenAuthentication, ]
        permission_classes = [LuffyPermission, ]
    
        def get(self, request, *args, **kwargs):
            """
            获取结算列表
            :param request: 
            :param args: 
            :param kwargs: 
            :return: 
            """
            response = {'code': 1000}
            try:
                # 结算商品列表
                payment_list = redis_pool.conn.hget(settings.REDIS_PAYMENT_KEY, request.user.id)
                if not payment_list:
                    raise Exception()
    
                response['data'] = {
                    'payment_list': json.loads(payment_list.decode('utf-8')),  # 结算信息(课程、价格和优惠券)
                    "balance": request.user.balance  # 个人贝里账户,可使用贝里金额
                }
            except Exception as e:
                response['code'] = 1001
                response['msg'] = "结算列表为空"
    
            return Response(response)
    
        def post(self, request, *args, **kwargs):
            """
            去结算
                方案一(示例):用户提交课程id,去redis购物车中获取其选好的价格策略,再次检测课程和价格策略的合法性。
                       PS: 直接购买时,需要先加入购物车,再立即去结算
    
                方案二:用户提交课程id和价格策略id,去数据库验证其合法性。
                       PS: 直接购买时,直接去结算
                
                user.id: {
                    policy_course_dict:{
                        课程ID:{
                            'course_id': course_id,
                            'course_name': product['name'],
                            'course_img': product['course_img'],
                            'policy_id': product['choice_policy_id'],
                            'policy_price': policy_price,
                            'policy_': policy_period,
                            'coupon_record_list': [
                                {'id': 0, 'text': '请选择优惠券'},
                                {'id': 1, 'type':1, 'text': '优惠券1', ..},
                                {'id': 2, 'type':2, 'text': '优惠券1', ..},
                                {'id': 3, 'type':3, 'text': '优惠券1', ..},
                            ],
                        },
                        课程ID:{
                            'course_id': course_id,
                            'course_name': product['name'],
                            'course_img': product['course_img'],
                            'policy_id': product['choice_policy_id'],
                            'policy_price': policy_price,
                            'policy_': policy_period,
                            'coupon_record_list': [
                                {'id': 0, 'text': '请选择优惠券'},
                                {'id': 1, 'type':1, 'text': '优惠券1', ..},
                                {'id': 2, 'type':2, 'text': '优惠券1', ..},
                                {'id': 3, 'type':3, 'text': '优惠券1', ..},
                            ],
                        }
                    },
                    global_coupon_dict:{
                        1:{'type': 0, 'text': "通用优惠券", 'id': 1, ..},
                        2:{'type': 0, 'text': "通用优惠券", 'id': 2, ..},
                        3:{'type': 0, 'text': "通用优惠券", 'id': 3, ...},
                        4:{'type': 0, 'text': "通用优惠券", 'id': 4, ...},
                    }
                }  
                       
                
            :param request: 
            :param args: 
            :param kwargs: 
            :return: 
            """
            response = {'code': 1001}
            try:
    
                """
                1. 获取要支付的课程ID
                2. 检查购物车中是否存在,不存在则报错
                    循环用户提交的课程ID,去购物车中获取,如果不存在,就报错。
                    
                """
                # 获取用户提交的课程id
                course_id_list = request.data.get('course_list')
                if not course_id_list or not isinstance(course_id_list, list):
                    raise Exception('请选择要结算的课程')
    
                # 购物车中检查是否已经有课程(应该有课程的)
                product_dict = redis_pool.conn.hget(settings.REDIS_SHOPPING_CAR_KEY, request.user.id)
                if not product_dict:
                    raise Exception('购物车无课程')
    
                # 购物车中是否有用户要购买的课程
                product_dict = json.loads(product_dict.decode('utf-8'))
    
                # ###### 课程、价格和优惠券 #######
                policy_course_dict = {}
    
                for course_id in course_id_list:
                    course_id = str(course_id)
                    product = product_dict.get(course_id)
                    if not product:
                        raise Exception('购买的课程必须先加入购物车')
    
                    policy_exist = False
                    for policy in product['price_policy_list']:
                        if policy['id'] == product['choice_policy_id']:
                            policy_price = policy['price']
                            policy_period = policy['period']
                            policy_valid_period = policy['valid_period']
                            policy_exist = True
                            break
                    if not policy_exist:
                        raise Exception('购物车中的课程无此价格')
    
                    policy_course = {
                        'course_id': course_id,
                        'course_name': product['name'],
                        'course_img': product['course_img'],
                        'policy_id': product['choice_policy_id'],
                        'policy_price': policy_price,
                        'policy_period': policy_period,
                        'policy_valid_period': policy_valid_period,
                        'coupon_record_list': [
                            {'id': 0, 'text': '请选择优惠券'},
                        ],
                    }
                    policy_course_dict[course_id] = policy_course
    
                # 获取当前所有优惠券
                user_coupon_list = models.CouponRecord.objects.filter(account=request.user,
                                                                      status=0)
                # ###### 全局优惠券 #######
                global_coupon_record_dict = {}
    
                # 课程优惠券添加到课程中;全局优惠券添加到全局
                current_date = datetime.datetime.now().date()
                for record in user_coupon_list:
                    # 检查优惠券是否已经过期
                    begin_date = record.coupon.valid_begin_date
                    end_date = record.coupon.valid_end_date
                    if begin_date:
                        if current_date < begin_date:
                            continue
                    if end_date:
                        if current_date > end_date:
                            continue
                    # 全局优惠券
                    if not record.coupon.content_type:
                        if record.coupon.coupon_type == 0:
                            temp = {'type': 0, 'text': "通用优惠券", 'id': record.id,
                                    'begin_date': begin_date, 'end_date': end_date,
                                    'money_equivalent_value': record.coupon.money_equivalent_value}
                        elif record.coupon.coupon_type == 1:
                            temp = {'type': 1, 'text': "满减券", 'id': record.id,
                                    'begin_date': begin_date, 'end_date': end_date,
                                    'minimum_consume': record.coupon.minimum_consume,
                                    'money_equivalent_value': record.coupon.money_equivalent_value}
                        elif record.coupon.coupon_type == 2:
                            temp = {'type': 2, 'text': "折扣券", 'id': record.id,
                                    'begin_date': begin_date, 'end_date': end_date,
                                    'off_percent': record.coupon.off_percent}
                        else:
                            continue
    
                        global_coupon_record_dict[record.id] = temp
                    # 课程优惠券
                    else:
                        cid = record.coupon.object_id
                        if record.coupon.content_type.model == 'course' and cid in policy_course_dict:
                            # 课程价格:满减,打折,通用
                            if record.coupon.coupon_type == 0:
                                temp = {'type': 0, 'text': "通用优惠券", 'id': record.id,
                                        'begin_date': begin_date, 'end_date': end_date,
                                        'money_equivalent_value': record.coupon.money_equivalent_value}
                            elif record.coupon.coupon_type == 1 and policy_course_dict[cid][
                                'policy_price'] >= record.coupon.minimum_consume:
                                temp = {'type': 1, 'text': "满减券", 'id': record.id,
                                        'begin_date': begin_date, 'end_date': end_date,
                                        'minimum_consume': record.coupon.minimum_consume,
                                        'money_equivalent_value': record.coupon.money_equivalent_value}
                            elif record.coupon.coupon_type == 2:
                                temp = {'type': 2, 'text': "折扣券", 'id': record.id,
                                        'begin_date': begin_date, 'end_date': end_date,
                                        'off_percent': record.coupon.off_percent}
                            else:
                                continue
                            policy_course_dict[cid]['coupon_record_list'].append(temp)
    
                user_pay = {
                    'policy_course_dict': policy_course_dict,
                    'global_coupon_record_dict': global_coupon_record_dict
                }
                redis_pool.conn.hset(settings.REDIS_PAYMENT_KEY, request.user.id, json.dumps(user_pay))
    
            except Exception as e:
                response['code'] = 1002
                response['msg'] = str(e)
    
            return Response(response)
    复制代码

    去支付

    复制代码
    #!/usr/bin/env python
    # -*- coding:utf-8 -*-
    import json
    import time
    import random
    import datetime
    from django.conf import settings
    from django.db import transaction
    from django.db.models import F
    
    from rest_framework.views import APIView
    from rest_framework.response import Response
    
    from api.utils.auth.token_auth import LuffyTokenAuthentication
    from api.utils.auth.token_permission import LuffyPermission
    from api.utils import redis_pool
    from api.utils.alipay import AliPay
    
    from repository import models
    
    
    def generate_order_num():
        """
        生成订单编号, 且必须唯一
        :return:
        """
        while True:
            order_num = time.strftime('%Y%m%d%H%M%S', time.localtime()) + str(random.randint(111, 999))
            if not models.Order.objects.filter(order_number=order_num).exists():
                break
        return order_num
    
    
    def generate_transaction_num():
        """
        生成流水编号, 且必须唯一
        :return:
        """
        while True:
            transaction_number = time.strftime('%Y%m%d%H%M%S', time.localtime()) + str(random.randint(111, 999))
            if not models.TransactionRecord.objects.filter(transaction_number=transaction_number).exists():
                break
        return transaction_number
    
    
    class PayOrderView(APIView):
        authentication_classes = [LuffyTokenAuthentication, ]
        permission_classes = [LuffyPermission, ]
    
        def post(self, request, *args, **kwargs):
            """
            去支付,生成订单。
            获取前端提交的购买信息
                {
                    course_price_list:[
                        {'policy_id':1, '':'course_id':1, 'coupon_record_id':1},
                        {'policy_id':2, '':'course_id':2, 'coupon_record_id':2},
                    ],
                    coupon_record_id:1,
                    alipay: 99,
                    balance: 1
                }
    
            1. 用户提交
                - balance
                - alipay
            2. 获取去结算列表
    
            课程
            3. 循环所有课程
                - 获取原价
                - 抵扣的钱
    
    
    
    
            :param request: 
            :param args: 
            :param kwargs: 
            :return: 
            """
            response = {'code': 1000}
            try:
                # 用户请求验证
                policy_course_list = request.data.get('course_price_list')
                coupon_record_id = request.data.get('coupon_record_id')
                alipay = request.data.get('alipay')  # >= 0
                balance = request.data.get('balance')  # >= 0
    
                if balance > request.user.balance:
                    raise Exception('账户中贝里余额不足')
    
                # 检查用户提交的信息在 redis结算列表 中是否存在,如果不存在,则需要用户从购物车中再次去结算
                payment_dict_bytes = redis_pool.conn.hget(settings.REDIS_PAYMENT_KEY, request.user.id)
                payment_dict = json.loads(payment_dict_bytes.decode('utf-8'))
    
                policy_course_dict = payment_dict['policy_course_dict']
                global_coupon_record_dict = payment_dict['global_coupon_record_dict']
    
                global_coupon_record = {}
                # 全局优惠券
                if coupon_record_id:
                    if  coupon_record_id not in global_coupon_record_dict:
                        raise Exception('全局优惠券在缓存中不存在')
                    global_coupon_record = global_coupon_record_dict[coupon_record_id]
    
                # 当前时间
                current_date = datetime.datetime.now().date()
                current_datetime = datetime.datetime.now()
    
                # 原价
                total_price = 0
                # 总抵扣的钱
                discount = 0
                # 使用优惠券ID列表
                if coupon_record_id:
                    use_coupon_record_id_list = [coupon_record_id, ]
                else:
                    use_coupon_record_id_list=[]
                # 课程和优惠券
                buy_course_record = []
    
                for cp in policy_course_list:
                    _policy_id = cp['policy_id']
                    _course_id = cp['course_id']
                    _coupon_record_id = cp['coupon_record_id']
    
                    temp = {
                        'course_id': _course_id,
                        'course_name': "course",
                        'valid_period': 0,  # 有效期:30
                        'period': 0,  # 有效期:一个月
                        'original_price': 0,
                        'price': 0,
                    }
    
    
                    if str(_course_id) not in policy_course_dict:
                        raise Exception('课程在缓存中不存在')
    
                    redis_course = policy_course_dict[str(_course_id)]
    
                    if str(_policy_id) != str(redis_course['policy_id']):
                        raise Exception('价格策略在缓存中不存在')
    
                    # 课程是否已经下线或价格策略被修改
                    policy_object = models.PricePolicy.objects.get(id=_policy_id)  # 价格策略对象
                    course_object = policy_object.content_object  # 课程对象
    
                    if course_object.id != _course_id:
                        raise Exception('课程和价格策略对应失败')
                    if course_object.status != 0:
                        raise Exception('课程已下线,无法购买')
    
                    # 选择的优惠券是否在缓存中
                    redis_coupon_list = redis_course['coupon_record_list']
                    redis_coupon_record = None
                    for item in redis_coupon_list:
                        if item['id'] == _coupon_record_id:
                            redis_coupon_record = item
                            break
                    if not redis_coupon_record:
                        raise Exception('单课程优惠券在缓存中不存在')
    
                    # 计算购买原总价
                    total_price += policy_object.price
    
                    # 未使用单课程优惠券
                    if redis_coupon_record['id'] == 0:
                        temp['price'] = policy_object.price
                        buy_course_record.append(temp)
                        continue
    
                    temp['original_price'] = policy_object.price
                    temp['valid_period'] = redis_coupon_record['policy_valid_period']
                    temp['period'] = redis_coupon_record['policy_period']
    
                    # 缓存中的优惠券是否已经过期
                    begin_date = redis_coupon_record.get('begin_date')
                    end_date = redis_coupon_record.get('end_date')
                    if begin_date:
                        if current_date < begin_date:
                            raise Exception('优惠券使用还未到时间')
                    if end_date:
                        if current_date > end_date:
                            raise Exception('优惠券已过期')
    
                    # 使用的是单课程优惠券抵扣了多少钱;使用的 个人优惠券ID
                    if redis_coupon_record['type'] == 0:
                        # 通用优惠券
                        money = redis_coupon_record['money_equivalent_value']
                        discount += money
                    elif redis_coupon_record['type'] == 1:
                        # 满减券
                        money = redis_coupon_record['money_equivalent_value']
                        minimum_consume = redis_coupon_record['minimum_consume']
                        if policy_object.price >= minimum_consume:
                            discount += money
                    elif redis_coupon_record['type'] == 2:
                        # 打折券
                        money = policy_object.price * redis_coupon_record['off_percent']
                        discount += money
    
                    temp['price'] = policy_object.price - money
                    buy_course_record.append(temp)
                    use_coupon_record_id_list.append(redis_coupon_record['id'])
    
                # 全局优惠券
                print(global_coupon_record)
                begin_date = global_coupon_record.get('begin_date')
                end_date = global_coupon_record.get('end_date')
                if begin_date:
                    if current_date < begin_date:
                        raise Exception('优惠券使用还未到时间')
                if end_date:
                    if current_date > end_date:
                        raise Exception('优惠券已过期')
    
                # 使用全局优惠券抵扣了多少钱
                if global_coupon_record.get('type') == 0:
                    # 通用优惠券
                    money = global_coupon_record['money_equivalent_value']
                    discount += money
                elif global_coupon_record.get('type') == 1:
                    # 满减券
                    money = global_coupon_record['money_equivalent_value']
                    minimum_consume = global_coupon_record['minimum_consume']
                    if (total_price - discount) >= minimum_consume:
                        discount += money
                elif global_coupon_record.get('type') == 2:
                    # 打折券
                    money = (total_price - discount) * global_coupon_record['off_percent']
                    discount += money
    
                # 贝里抵扣的钱
                if balance:
                    discount += balance
    
                if (alipay + discount) != total_price:
                    raise Exception('总价、优惠券抵扣、贝里抵扣和实际支付的金额不符')
    
                # 创建订单 + 支付宝支付
                # 创建订单详细
                # 贝里抵扣 + 贝里记录
                # 优惠券状态更新
                actual_amount = 0
                if alipay:
                    payment_type = 1  # 支付宝
                    actual_amount = alipay
                elif balance:
                    payment_type = 3  # 贝里
                else:
                    payment_type = 2  # 优惠码
    
                with transaction.atomic():
                    order_num = generate_order_num()
                    if payment_type == 1:
                        order_object = models.Order.objects.create(
                            payment_type=payment_type,
                            order_number=order_num,
                            account=request.user,
                            actual_amount=actual_amount,
                            status=1,  # 待支付
                        )
                    else:
                        order_object = models.Order.objects.create(
                            payment_type=payment_type,
                            order_number=order_num,
                            account=request.user,
                            actual_amount=actual_amount,
                            status=0,  # 支付成功,优惠券和贝里已够支付
                            pay_time=current_datetime
                        )
    
                    for item in buy_course_record:
    
                        detail = models.OrderDetail.objects.create(
                            order=order_object,
                            content_object=models.Course.objects.get(id=item['course_id']),
                            original_price=item['original_price'],
                            price=item['price'],
                            valid_period_display=item['period'],
                            valid_period=item['valid_period']
                        )
                    models.Account.objects.filter(id=request.user.id).update(balance=F('balance') - balance)
                    models.TransactionRecord.objects.create(
                        account=request.user,
                        amount=request.user.balance,
                        balance=request.user.balance - balance,
                        transaction_type=1,
                        content_object=order_object,
                        transaction_number=generate_transaction_num()
                    )
                    effect_row = models.CouponRecord.objects.filter(id__in=use_coupon_record_id_list).update(
                        order=order_object,
                        used_time=current_datetime)
    
    
                    if effect_row != len(use_coupon_record_id_list):
                        raise Exception('优惠券使用失败')
    
                    response['payment_type'] = payment_type
                    # 生成支付宝URL地址
                    if payment_type == 1:
                        pay = AliPay(debug=True)
                        query_params = pay.direct_pay(
                            subject="路飞学城",  # 商品简单描述
                            out_trade_no=order_num,  # 商户订单号
                            total_amount=actual_amount,  # 交易金额(单位: 元 保留俩位小数)
                        )
                        pay_url = "https://openapi.alipaydev.com/gateway.do?{}".format(query_params)
    
                        response['pay_url'] = pay_url
    
            except IndentationError as e:
                response['code'] = 1001
                response['msg'] = str(e)
    
            return Response(response)
    复制代码
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  • 原文地址:https://www.cnblogs.com/xyhh/p/10861262.html
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