def get_selected_course(self, request):
user_id = request.user.id
redis_conn = get_redis_connection('cart')
cart_hash = redis_conn.hgetall('cart_%s' % user_id)
course_id_list = redis_conn.smembers('selected_%s' % user_id)
data = []
for course_id_byte in course_id_list:
course_id = course_id_byte.decode()
course_time = int(cart_hash.get(course_id_byte).decode())
course = Course.objects.get(pk=course_id)
course.real_price(course_time)
CourseExpire.get_expire_text(course_id, course_time)
data.append({
"course_id":
course.id,
"course_img":
constants.SERVER_IMAGE_URL +
course.course_img.url, # 返回图片的url地址
"course_name":
course.name,
"price":
course.real_price(course_time), # 商品原价
"real_price":
0.00, # 折扣以后的价格
"expire_text":
CourseExpire.get_expire_text(course_id, course_time)
})
return Response(data)
def get_selected_course(self, request):
"""获取购物车中勾选的商品信息"""
user_id = request.user.id
redis_conn = get_redis_connection("cart")
cart_hash = redis_conn.hgetall("cart_%s" % user_id)
selected_set = redis_conn.smembers("selected_%s" % user_id)
data = []
print("cart_hash==>", cart_hash)
for course_id_bytes in selected_set:
print("course_id_bytes==>", course_id_bytes)
print("cart_hash.get(course_id_bytes)==>", cart_hash.get(course_id_bytes))
course_id = course_id_bytes.decode()
expire_time = int(cart_hash.get(course_id_bytes).decode())
try:
course = Course.objects.get(pk=course_id)
data.append({
"course_id": course.id,
"course_img": constants.SERVER_IMAGE_URL + course.course_img.url, # 返回图片的url地址
"course_name": course.name,
"price": course.original_price(expire_time), # 商品原价
"real_price": course.real_price(expire_time), # 折扣以后的价格
"selected": True if course_id_bytes in selected_set else False,
"expire_text": CourseExpire.get_expire_text(course_id, expire_time)
})
except CourseExpire.DoesNotExist:
pass
return Response(data)
def change_expire(self, request):
user_id = request.user.id
course_id = request.data.get('course_id')
expire_id = request.data.get('expire_id')
print(user_id, '选择有效期为', expire_id, '的课程', course_id)
# 查询操作的课程是否存在
try:
course = Course.objects.get(is_delete=False,
is_show=True,
pk=course_id)
price = course.real_price
# 如果前端传递的有效期的id不是0 则修改对应课程的有效期
if expire_id > 0:
try:
expire_obj = CourseExpire.objects.get(is_show=True,
is_delete=False,
pk=expire_id)
except CourseExpire.DoesNotExist:
expire_obj = None
if not expire_obj:
raise CourseExpire.DoesNotExist("课程有效期不存在")
except Course.DoesNotExist:
return Response({"message": "课程信息不存在"},
status=http_status.HTTP_400_BAD_REQUEST)
redis_connection = get_redis_connection("cart")
redis_connection.hset("cart_%s" % user_id, course_id, expire_id)
try:
course.price = expire_obj.price
price = course.real_price
except:
print("出现了错误")
return Response({"message": "有效期切换失败", 'price': price})
return Response({'message': '有效期切换成功', 'price': price})
def change_expire(self, request):
"""改变redis的课程有效期"""
user_id = request.user.id
course_id = request.data.get("course_id")
expire_id = request.data.get("expire_id")
print(expire_id, "expire_id")
try:
course = Course.objects.get(is_show=True,
is_delete=False,
pk=course_id)
# 如果前端传递的有效期选项不是0 则修改对应的有效
if expire_id > 0:
expire_item = CourseExpire.objects.filter(is_delete=False,
is_show=True,
pk=expire_id)
if not expire_item:
raise CourseExpire.DoesNotExist()
except Course.DoesNotExist:
return Response({"message": "操作的课程不存在"},
status=status.HTTP_400_BAD_REQUEST)
redis_connection = get_redis_connection("cart")
redis_connection.hset("cart_%s" % user_id, course_id, expire_id)
# TODO 重新计算修改有效期的课程的价格
real_price = course.real_expire_price(expire_id)
return Response({"message": "切换有效期成功", "price": real_price})
def change_expire(self, request):
"""改变redis中课程有效期"""
# 获取用户id 课程id 有效期id
user_id = request.user.id
expire_id = request.data.get("expire_id")
course_id = request.data.get("course_id")
# 查询操作的课程是否存在
try:
course = Course.objects.get(is_delete=False, is_show=True, pk=course_id)
# 如果前端传递的有效期的id不是0 则修改对应课程的有效期
if expire_id > 0:
expire_obj = CourseExpire.objects.filter(is_show=True, is_delete=False, pk=expire_id)
if not expire_obj:
raise CourseExpire.DoesNotExist("课程有效期不存在")
except Course.DoesNotExist:
return Response({"message": "课程信息不存在"}, status=status.HTTP_400_BAD_REQUEST)
redis_connection = get_redis_connection("cart")
redis_connection.hset("cart_%s" % user_id, course_id, expire_id)
return Response({"message": "有效期切换成功"})