function vote($aim_type, $aim_id, $user_id, $score)
{
if (!is_numeric($aim_id) || !$aim_id || !$user_id) {
return;
}
//$aim_id;
//$aim_type = self::AIM_TYPE_FEED;
$score = $score > 0 ? 1 : -1;
$this->init('votes');
$votes = $this->get(compact('aim_id', 'aim_type', 'user_id'));
$last_vote_type = $votes['vote_type'];
$vote_id = $votes['vote_id'];
$OPR = array();
$this->begin();
try {
if ($aim_type == self::AIM_TYPE_FEED) {
$this->init();
//锁行
$feed = $this->get($aim_id, true);
$ups = $feed['ups'];
$downs = $feed['downs'];
} elseif ($aim_type == self::AIM_TYPE_COMMENT) {
$this->init('comments');
//锁行
$comment = $this->get($aim_id, true);
$ups = $comment['ups'];
$downs = $comment['downs'];
}
if ($score > 0 && $last_vote_type != self::VOTE_TYPE_LIKE) {
//改成喜欢
$ups += 1;
$OPR['ups[+]'] = 1;
if ($last_vote_type == self::VOTE_TYPE_DISLIKE) {
$downs -= 1;
$OPR['downs[-]'] = 1;
}
$vote_type = self::VOTE_TYPE_LIKE;
} elseif ($score < 0 && $last_vote_type != self::VOTE_TYPE_DISLIKE) {
//改成不喜欢
$downs += 1;
$OPR['downs[+]'] = 1;
if ($last_vote_type == self::VOTE_TYPE_LIKE) {
$ups -= 1;
$OPR['ups[+]'] = 1;
}
$vote_type = self::VOTE_TYPE_DISLIKE;
} else {
//改成未打过
if ($last_vote_type == self::VOTE_TYPE_DISLIKE) {
$downs -= 1;
$OPR['downs[-]'] = 1;
}
if ($last_vote_type == self::VOTE_TYPE_LIKE) {
$ups -= 1;
$OPR['ups[-]'] = 1;
}
$vote_type = self::VOTE_TYPE_UNVOTE;
}
if ($aim_type == self::AIM_TYPE_FEED) {
//为了方便计算和存储，省略两位小数，转为整形
$hot_score = sorts::hot_score($ups, $downs, $feed['add_time']);
$controversy_score = sorts::controversy($ups, $downs);
$this->init();
$this->update(compact('OPR', 'hot_score', 'controversy_score'), array('feed_id' => $aim_id));
$this->user_vote_feed($user_id, 'refresh');
} elseif ($aim_type == self::AIM_TYPE_COMMENT) {
//为了方便计算和存储，省略两位小数，转为整形
$hot_score = sorts::comment_hot_score($ups, $downs);
$this->init('comments');
$this->update(compact('OPR', 'hot_score'), array('comment_id' => $aim_id));
}
$this->init('votes');
if ($last_vote_type != self::VOTE_TYPE_UNVOTE && $vote_type == self::VOTE_TYPE_UNVOTE) {
$this->delete($vote_id);
} else {
$add_time = $_SERVER['REQUEST_TIME'];
$this->edit(compact('vote_id', 'aim_id', 'aim_type', 'user_id', 'vote_type', 'add_time'));
}
$this->init();
$this->commit();
return true;
} catch (Exception $e) {
$this->message = '失败';
$this->rollBack();
return false;
}
}
