だから私は自分のブログの無限スクロールを作成しています。基本的に、スクロール後に 1 つの投稿を引き出す必要があります。私はAjaxを通してそれを引っ張っています。問題は、Ajax が 1 回のスクロール後に取得したのと同じ post_id を投稿していることです。firebugでデバッグしました。例: 既に post-id = 10 の投稿があります。スクロールすると、post-id = 11 の次の投稿が追加されます。しかし、その後スクロールすると、post-id = 11 の投稿のみが追加されます。 、post-id = 12 などの投稿を追加しません。何が問題ですか?この (Posted:last) セレクターに問題はありますか? 最後に動的に更新されたコンテンツの ID を取得するにはどうすればよいですか?
ここに私のIndex.phpがあります:
<?php
include 'resources/init.php';
function get_posts($post_id = null, $tag_id = null){
$posts = array();
$query = "SELECT `posts`.`post_id` AS `posts_id`, `tags`.`tag_id` AS `tags_id`,
`title`, `txt_content`, `img_content`, `date_posted`,`tag_name`
FROM `posts`
INNER JOIN `tags` ON `tags`.`tag_id` = `posts`.`tag_id`";
if(isset($post_id)){
$post_id = (int)$post_id;
$query .= " WHERE `posts`.`post_id` = $post_id";
}
if(isset($tag_id)){
$tag_id = (int)$tag_id;
$query .= " WHERE `tags`.`tag_id` = $tag_id";
}
$query .= " ORDER BY `posts`.`post_id` DESC LIMIT 0,1";
$query = mysql_query($query);
while($row = mysql_fetch_assoc($query)){
$posts[] = $row;
}
return $posts;
}
$posts = (isset($_GET['post_id'])) ? get_posts($_GET['post_id']) : get_posts();
?>
<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
</head>
<body>
<a href = "http://localhost/simpleblog/add_post.php">Add a Post</a> | <a href = "http://localhost/simpleblog/add_tag.php">Add a Tag</a> | <a href = "http://localhost/simpleblog/tag_list.php">Show Existing Tags</a> | <a href = ""></a>
<p>
<div id = "AddPosts">
<?php
foreach($posts as $post){
?>
<div class = "Posted" id = "<?php echo $post['posts_id']; ?>">
<h2><a href = "http://localhost/simpleblog/looks/<?php echo $post['posts_id']; ?>-<?php $strings = array(" "); echo str_replace($strings, '-', preg_replace('/[^a-zA-Z0-9 s]/', '', $post['title'])); ?>"><?php echo $post['title'];?></a></h2>
<div><?php echo nl2br($post['txt_content']);?></div>
<div><img src = "http://localhost/simpleblog/<?php echo $post['img_content'];?>"></div>
<p>Posted on <i><?php echo date("F dS\,\ Y", strtotime($post['date_posted'])); ?></i>
in <a href = "http://localhost/simpleblog/tags/<?php echo $post['tags_id'];?>"><?php echo $post['tag_name']; ?></a></p>
<div><a href = "http://localhost/simpleblog/edit_my_looks/<?php echo $post['posts_id'];?>">Edit This Post</a> |
<a href = "http://localhost/simpleblog/delte_my_post/<?php echo $post['posts_id'];?>"> Delete This Post</a></div>
</div>
<?php
}
?>
</div>
<center><img src = "loader.gif" id = "loading-img" width = "200" height = "200" style = "display:none" /></center>
<script>
$(window).scroll(function(){
if ($(window).scrollTop() == $(document).height() - $(window).height()){
$('#loading-img').show();
var post_id = $('.Posted:last').attr('id');
$.post("add_more_posts.php", {post_id: post_id} , function(data){
if(data){
$('#loading-img').fadeOut();
$('#AddPosts').append(data);
}else{
$('#AddPosts').append('Finished Loading!');
}
});
}
});
</script>
</body>
</html>
Add_more_posts.php
<?php
include 'resources/init.php';
function load_more_posts($post_id = null, $tag_id = null){
$posts = array();
$query = "SELECT `posts`.`post_id` AS `posts_id`, `tags`.`tag_id` AS `tags_id`,
`title`, `txt_content`, `img_content`, `date_posted`,`tag_name`
FROM `posts`
INNER JOIN `tags` ON `tags`.`tag_id` = `posts`.`tag_id`";
if(isset($post_id)){
$post_id = (int)$_POST['post_id'];
$query .= " WHERE `posts`.`post_id` < $post_id";
}
if(isset($tag_id)){
$tag_id = (int)$tag_id;
$query .= " WHERE `tags`.`tag_id` = $tag_id";
}
$query .= " ORDER BY `posts`.`post_id` DESC LIMIT 0,1";
$query = mysql_query($query);
while($row = mysql_fetch_assoc($query)){
$posts[] = $row;
}
return $posts;
}
$posts = (isset($_POST['post_id'])) ? load_more_posts($_POST['post_id']) : load_more_posts();
?>
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<?php
foreach($posts as $post){
?>
<h2><a href = "http://localhost/simpleblog/looks/<?php echo $post['posts_id']; ?>-<?php $strings = array(" "); echo str_replace($strings, '-', preg_replace('/[^a-zA-Z0-9 s]/', '', $post['title'])); ?>"><?php echo $post['title'];?></a></h2>
<div><?php echo nl2br($post['txt_content']);?></div>
<div><img src = "http://localhost/simpleblog/<?php echo $post['img_content'];?>"></div>
<p>Posted on <i><?php echo date("F dS\,\ Y", strtotime($post['date_posted'])); ?></i>
in <a href = "http://localhost/simpleblog/tags/<?php echo $post['tags_id'];?>"><?php echo $post['tag_name']; ?></a></p>
<div><a href = "http://localhost/simpleblog/edit_my_looks/<?php echo $post['posts_id'];?>">Edit This Post</a> |
<a href = "http://localhost/simpleblog/delte_my_post/<?php echo $post['posts_id'];?>"> Delete This Post</a></div>
<?php
}
?>
</body>
</html>