def get_posts_by_cid(cid, num=0):
cache_key = 'cr_cid_%s' % cid
posts = [pickle.loads(i) for i in r.lrange(cache_key, 0, -1)]
if not posts:
cr_list = Copyright.objects.filter(cid=cid)
for cr in cr_list:
post = Post.get(pid=cr.pid)
post.roles = cr.roles
posts.append(post)
r.lpush(cache_key, pickle.dumps(post))
return posts[:num or -1]
def get_composers(self):
cache_key = 'cr_pid_%s' % self.pid
composers = [pickle.loads(i) for i in r.lrange(cache_key, 0, -1)]
if not composers:
cr_list = Copyright.objects.filter(pid=self.pid).all()
for cr in cr_list:
composer = Composer.get(cid=cr.cid)
if composer:
composer.role = cr.roles
composers.append(composer)
r.lpush(cache_key, pickle.dumps(composer))
return composers
def composers(self):
"""取出当前作品的所有作者"""
# composers = []
cache_key = 'cr_pid_%s' % self.pid
composers = [pickle.loads(i) for i in r.lrange(cache_key, 0, -1)]
# if r.exists(cache_key):
if not composers:
cr_list = Copyright.filter(pid=self.pid).all()
for cr in cr_list:
composer = Composer.get(cid= cr.cid)
if composer:
composer.role = cr.roles
composers.append(composer)
r.lpush(cache_key,pickle.dumps(composer))
return composers