def delete_topic_alias_action(user_id, topic_id, alias):
""" return topic_id(int) if succeed, otherwise return error message"""
old_alias_set = Topic_Alias.objects.filter(topic__id=topic_id, alias=alias)
if old_alias_set:
old_alias = old_alias_set[0]
refs = Topic_Revision.objects.filter(topic__id=topic_id, operation='aa', alias=old_alias.alias).order_by('-pk')
if refs:
reference = refs[0]
if reference.user_id != user_id:
notification = Notification(operation='da')
notification.user_id = reference.user_id
notification.related_user_id = user_id
notification.topic_id = topic_id
notification.incr_count_in_profile()
notification.save()
update_user_topic_fame(topic_id, user_id, reference.user_id)
else:
reference = None
update_user_topic_fame(topic_id, user_id)
topic_revision = Topic_Revision(operation='da', reference=reference)
topic_revision.topic_id = topic_id
topic_revision.alias = old_alias.alias
topic_revision.user_id = user_id
topic_revision.save()
old_alias.delete()
return topic_id
else:
return '此别名不存在'
def add_topic_alias_action(user_id, topic_id, topic_name, alias):
"""return topic_alias.id(long) if succeed, otherwise return error message"""
if topic_name == alias:
return '别名不能与话题名相同'
if alias and SensitiveWord.objects.filter(name=alias, disabled=False):
return '根据当地法律，此别名不能被添加'
old_aliases = Topic_Alias.objects.filter(topic__id=topic_id, alias=alias)
if old_aliases:
return '此别名已经添加到此话题'
else:
topic_alias = Topic_Alias(alias=alias)
topic_alias.topic_id = topic_id
topic_alias.save()
refs = Topic_Revision.objects.filter(topic__id=topic_id, operation='da', alias=topic_alias.alias).order_by('-pk')
if refs:
reference = refs[0]
if reference.user_id != user_id:
notification = Notification(operation='aa')
notification.user_id = reference.user_id
notification.related_user_id = user_id
notification.topic_id = topic_id
notification.incr_count_in_profile()
notification.save()
update_user_topic_fame(topic_id, user_id, reference.user_id)
else:
reference = None
update_user_topic_fame(topic_id, user_id)
topic_revision = Topic_Revision(operation='aa', reference=reference)
topic_revision.topic_id = topic_id
topic_revision.alias = topic_alias.alias
topic_revision.user_id = user_id
topic_revision.save()
return topic_alias.id
