def seed(request, topic_id):
rspd = {}
request_user = request.user
if not request_user.is_authenticated():
rspd['msg'] = u'要收藏，先登录！'
res = json.dumps(rspd)
return HttpResponse(res)
topic = get_object_or_404(Topic, id=topic_id)
if topic.posted_by == request_user:
rspd['msg'] = u'没必要收藏自己的主题哦！'
res = json.dumps(rspd)
return HttpResponse(res)
seed_user = Seed.objects.filter(topic=topic,
seed_by=request_user).select_related()
if seed_user:
rspd['msg'] = u'你已经收藏了，不能重复收藏！'
res = json.dumps(rspd)
return HttpResponse(res)
else:
seed = Seed(topic=topic, seed_by=request_user)
seed.save()
topic.num_seeds += 1
topic.save()
rspd['msg'] = u'收藏成功！'
res = json.dumps(rspd)
return HttpResponse(res)
