def rewind(user):
key = keys.REWIND_KEY % user.id
cached_rewinded_times = cache.get()
if cached_rewinded_times < config.MAX_REWIND:
cached_rewinded_times += 1
now = datetime.datetime.now()
left_seconds = 86400 - now.hour * 3600 - now.minute * 60 - now.second
cache.set(cached_rewinded_times, timeout=left_seconds)
try:
record = Swiped.objects.filter(uid=user.id).latest('time')
Friend.delete_friend(uid1=user.id, uid2=record.sid)
record.delete()
return 0, None
except Swiped.DoesNotExist:
return errors.NO_RECORD, '无操作记录,无法反悔'
else:
return errors.EXCEED_MAXIMUN_REWIND, '超过最大反悔次数'
def rewind(uid):
key = keys.REWIND % uid
cached_rewind_times = cache.get(key, 0)
if cached_rewind_times < config.MAX_REWIND_TIMES:
# 说明可以执行反悔操作.
# 查找上一次操作的Swiped记录
record = Swiped.objects.latest('time')
# 如果建立了好友关系,好友关系也需取消.
if Friend.is_friend(uid1=uid, uid2=record.sid):
Friend.delete_friend(uid1=uid, uid2=record.sid)
# 更新缓存
cached_rewind_times += 1
now = datetime.datetime.now()
timeout = 86400 - (3600 * now.hour + 60 * now.minute + now.second)
cache.set(key, cached_rewind_times, timeout)
# 处理反悔之后排行榜的分数问题
# if record.mark == 'like':
# rds.zincrby(config.TOP_N, -config.LIKE_SCORE,
# keys.TOP_N_KEY % record.sid)
# elif record.mark == 'dislike':
# rds.zincrby(config.TOP_N, -config.DISLIKE_SCORE,
# keys.TOP_N_KEY % record.sid)
# else:
# rds.zincrby(config.TOP_N, -config.SUPERLIKE_SCORE,
# keys.TOP_N_KEY % record.sid)
# 使用字典做模式匹配优化以上代码
mapping = {
'like': config.LIKE_SCORE,
'dislike': config.DISLIKE_SCORE,
'superlike': config.SUPERLIKE_SCORE
}
rds.zincrby(config.TOP_N, -mapping.get(record.mark),
keys.TOP_N_KEY % record.sid)
record.delete()
return True
else:
raise errors.ExceedMaximumRewindTimes
def rewind(user):
key = keys.PROFILE_KEY % user.id
cached_rewinded_times = cache.get(key, 0)
if cached_rewinded_times < config.MAX_REWIND:
# 说明当天还有反悔机会
# 缓存中的反悔次数要加1
cached_rewinded_times += 1
now = datetime.datetime.now()
left_seconds = 86400 - (now.hour * 3600 + now.minute * 60 + now.second)
cache.set(key, cached_rewinded_times, time=left_seconds)
# 删除Swiped表中的最近的一条记录
try:
record = Swiped.objects.filter(uid=user.id).latest('time')
# 考虑如果有好友关系, 返回之后,好友关系也应该解除
Friend.delete_friend(uid1=user.id, uid2=record.sid)
record.delete()
return 0, None
except Swiped.DoesNotExist:
# return render_json(code=erros.NO_RECORD,data='无操作记录,无法反悔'
return erros.NO_RECORD, '无操作记录,无法反悔'
else:
return erros.EXCEED_MAXIMUM_REWIND, '超过最大反悔次数'
def delete(request):
sid = request.POST.get('sid')
Friend.delete_friend(request.user.id, sid)
Swiperd.delete_mark(request.user.id, sid)
return render_json(None)
def dislike(uid, sid):
# 创建一条记录
Swiped.dislike(uid, sid)
Friend.delete_friend(uid, sid)
return True
def dislike(uid, sid):
Swiped.dislike(uid=uid, sid=sid)
Friend.delete_friend(uid, sid)
return True
def dislike(uid, sid):
Swiped.dislike(uid=uid, sid=sid)
# 删除好友记录
Friend.delete_friend(uid, sid)
