我正在尝试在页面上制作一个赞按钮,但似乎无法使其正常工作。基本上有三个函数使用 ajax 将数据发送到更新数据库的 php 页面。我检查了数据库并且所有三个都正确更新。如果用户最初不喜欢并单击它,它会正确显示不同的按钮,但是,如果您单击不同的按钮,它不会切换回来(尽管它确实会更新数据库)。
这是设置它的正确方法吗?我对 ajax 很陌生,不确定这是否是正确的方法。在此先感谢史蒂夫
public function likesScript($p){?>
<script>
//display list of people who like this
function getLikes(){
$.ajax({
type: "POST",
url: "likelist.php",
data: { p: "<?php echo $_GET['p']?>"}
}).success(function(res) {
//check to see if current user likes this
if($('li#<?PHP echo $_SESSION['userId']; ?>').length){
$(".Like").addClass('hidden');
$(".UnLike").removeClass('hidden');
}
else{
$(".UnLike").addClass('hidden');
$(".Like").removeClass('hidden');
}
$("#likedBy").append(res);
console.log(res);
});
}
function removeLike() {
$.ajax({
type: "POST",
url: "likedata.php",
data: { arg1: "<?php echo $_SESSION['userId']?>", arg2: "<?php echo $p;?>", arg3: "0" }
})
getLikes();
return false;
}
function addLike() {
$.ajax({
type: "POST",
url: "likedata.php",
data: { arg1: "<?php echo $_SESSION['userId']?>", arg2: "<?php echo $p;?>", arg3: "1" }
})
getLikes();
return false;
}
$(document).ready(function() { getLikes();
$(".UnLike").live('click',removeLike);
$(".Like").live('click',addLike);
});
</script>
likelist.php:
<?php
require $_SERVER['DOCUMENT_ROOT'].'/view.class.php';
$view = new view();
include $_SERVER['DOCUMENT_ROOT'].'/profile.class.php';
include $_SERVER['DOCUMENT_ROOT'].'/init.php';
$profile = new profile($dbh);
if(isset($_POST)){
$p = $_POST['p'];
$view->printLikes($profile->getLikes($p));
}
喜欢data.php:
<?php
include $_SERVER['DOCUMENT_ROOT'].'/profile.class.php';
include $_SERVER['DOCUMENT_ROOT'].'/init.php';
$profile = new profile($dbh);
if(isset($_POST)){
$liker = $_POST['arg1'];
$likee = $_POST['arg2'];
$likeYesNo = $_POST['arg3'];
$profile->insertLikes($liker, $likee, $likeYesNo);
}
?>