/**
* 用户添加关注，同时推送条新鲜事
*
* @param $uid 用户
* @param $friendid 关注的对象
* @param $limit 新鲜事数量
*/
function addFollow($uid, $friendid, $limit = 20, $from = '')
{
//fixed
global $timestamp;
if (!$uid || !$friendid) {
return false;
}
if ($this->isFollow($uid, $friendid)) {
return 'user_attention_exists';
}
$attentionDB = $this->_getAttentionDB();
$attentionDB->insert(array('uid' => $uid, 'friendid' => $friendid, 'joindate' => $this->_timestamp));
$userServer = L::loadClass('UserService', 'user');
$userServer->updateByIncrement($uid, array(), array('follows' => 1));
$userServer->updateByIncrement($friendid, array(), array('fans' => 1, 'newfans' => 1));
$medalservice = L::loadClass('medalservice', 'medal');
$medalservice->runAutoMedal($friendid, 'fans', 'fans', 1);
$friendService = L::loadClass('Friend', 'friend');
if (!$friendService->isFriend($uid, $friendid) || $from == 'addFriend') {
$this->addUserWeiboRelationsByFriendid($friendid, $uid, $limit);
}
/*更新粉丝排行记录*/
L::loadClass('elementupdate', '', false);
$elementupdate = new ElementUpdate('fans');
$elementupdate->setCacheNum(100);
$elementupdate->totalFansUpdate($friendid);
$elementupdate->updateSQL();
$elementupdate->setCacheNum(20);
$elementupdate->todayFansUpdate($friendid);
$elementupdate->updateSQL();
return true;
}