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我想要做的是在我的脚本中添加一个用户关注系统（类似推特）。

这是 db 结构的样子：

CREATE TABLE IF NOT EXISTS `user_follow` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `follower` int(11) NOT NULL,
  `following` int(11) NOT NULL,
  `subscribed` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  PRIMARY KEY (`id`),
  UNIQUE KEY `follow_unique` (`follower`,`following`)
) ENGINE=MyISAM  DEFAULT CHARSET=latin1 ;

如果我想创建我应该使用这个代码：

mysql_query(" INSERT INTO `user_follow` (`follower`, `following`, `subscribed`) VALUES ('$follower', '$following', CURRENT_TIMESTAMP); ");

对于取消订阅，它应该如下所示：

mysql_query(" DELETE FROM `user_follow` WHERE `follower` = '$follower' AND `following` = '$following'; ");

.

$follower = $_SESSION[user_id]; // the user_id for the one who is currently logged id 
$following = $user_id; // the user_id for the user profile where the script will be on

在个人资料页面上，我有一个这样的表格：

<?php if (isset($_SESSION[user_id]) && $_SESSION[user_id] != $user_id) { ?>
<form action="" method="post">
<input name="action" type="hidden" value="<?php echo $subscribe_status; ?>"/>
<button name="subject" type="submit" value="<?php echo $subscribe_text.' '.$username; ?>"><?php echo $subscribe_text.' '.$username; ?></button>
</form>
<?php } ?>

我不知道如何链接所有这些代码......

编辑：

$subscribe_status应该更改为follow或unfollow取决于用户是否已经关注该用户（通过我认为的查询进行检查）。

也$subscribe_text应该是Follow或Unfollow取决于当前登录的用户 ( $follower) 是否已经在关注该用户。

有人可以帮我吗？

编辑 2（基于 Mihir Singh 的回答）

$user_follow = dbquery(" SELECT * FROM `user_follow` WHERE `follower` = '$follower' AND `following` = '$following'; ");
$check_status = dbrows($user_follow);

$sub = false; //Boolean var which states if subscribed or not

if ( $check_status !== 0 ){ //Pseudo code
    $sub = true; //If row is found, they are subscribed, so set $sub to true
}

if($sub){
     $subscribe_status = "follow";
     $subscribe_text = "Follow";
}

else{
     $subscribe_status = "unfollow";
     $subscribe_text = "Unfollow";
}
4

1 回答 1

2

这是一些代码：

$sub = false; //Boolean var which states if subscribed or not

if (row in table exists --> subscribed ){ //Pseudo code
    $sub = true; //If row is found, they are subscribed, so set $sub to true

if($sub){
     $subscribe_status = "Follow";
     $subscribe_text = "Unfollow";
}

else{
     $subscribe_status = "Unfollow";
     $subscribe_text = "Follow";
}

编辑：

因此，这是您正在使用的表单代码：

<?php if (isset($_SESSION[user_id]) && $_SESSION[user_id] != $user_id) { ?>
<form action="" method="post">
<input name="action" type="hidden" value="<?php echo $subscribe_status; ?>"/>
<button name="subject" type="submit" value="<?php echo $subscribe_text.' '.$username; ?>">       
<?php echo $subscribe_text.' '.$username; ?></button>
</form>
<?php } ?>

基于此，我会改变

<form action="" method="post">

到

<form action="handler.php" method="post">

然后用这个创建一个处理程序文件：

<?
    if ($_POST['action'] == "Follow")
        //Perform Unfollow Query to Database
    else
        //Perform Follow Query to Database
?>

那是准系统....但应该可以解决。怎么样？

于 2012-05-10T23:26:08.193 回答