我正在使用PHP和ajax为博客文章创建评论工具,以发布评论,以便在发表评论后页面不会刷新。
这是访问页面时显示注释的代码。如果帖子没有评论,则会显示一条通知。全部都可以。
$stmt = $conn->prepare("SELECT comm.comment, comm.comment_date, m.member_screen_name
FROM comments comm
JOIN members m
ON comm.member_id = m.id
WHERE comm.entry_id = ?
ORDER BY comm.comment_date DESC");
$stmt->bind_param("i", $post_id);
$stmt->execute();
$stmt_result = $stmt->get_result();
if ($stmt_result->num_rows > 0) {
while($row = $stmt_result->fetch_assoc()) {
$comment = $row["comment"];
$comment_date = date_create($row['comment_date']);
$comment_date = date_format($comment_date, ' l jS F Y H:i');
$comment_author = $row["member_screen_name"];
$comments .= "<div class='comment_div'><div class='small'><p class='text-info'>posted by $comment_author on $comment_date</p>$comment<hr /></div></div>";
}
}else{
$comments = "<div class='alert alert-primary' role='alert'>Be the first to comment</div>";
}
提交评论表格后,它将调用此功能。
$('#submit').click(function (e) {
e.preventDefault();
if (!$('#summernote').summernote('isEmpty')) {
var comment = document.getElementById("summernote").value;
var member_id = 1;
var post_id = 1;
$.ajax ({
type: 'post',
url: 'post_comment.php',
data: {
comment:comment,
member_id:member_id,
post_id:post_id,
},
success: function (response) {
document.getElementById("all_comments").innerHTML=response+document.getElementById("all_comments").innerHTML;
$("#summernote").summernote("reset");
},
});
}else {
alert('Please enter a comment');
}
return false;
});
这是post_comment.php页面
if(isset($_POST['comment'])){
$comments = "";
$comment=$_POST['comment'];
$member_id =$_POST['member_id'];
$post_id =$_POST['post_id'];
if(isset($comment)) {
$stmt = $conn->prepare("INSERT INTO comments (entry_id, member_id, comment) VALUES (?, ?, ?)");
$stmt->bind_param("iis", $post_id, $member_id, $comment);
$stmt->execute();
$entry_id = mysqli_insert_id($conn);
$stmt = $conn->prepare("SELECT comm.comment, comm.comment_date, m.member_screen_name
FROM comments comm
JOIN members m
ON comm.member_id = m.id
WHERE comm.entry_id = ?
AND comm.id = $entry_id
ORDER BY comm.comment_date DESC");
$stmt->bind_param("i", $post_id);
$stmt->execute();
$stmt_result = $stmt->get_result();
if ($stmt_result->num_rows > 0) {
while($row = $stmt_result->fetch_assoc()) {
$comment = $comment;
$comment_date = date_create($row['comment_date']);
$comment_date = date_format($comment_date, ' l jS F Y H:i');
$comment_author = $row["member_screen_name"];
$comments .= "<div class='comment_div' style='background:red'><div class='small'><p class='text-info'>posted by $comment_author on $comment_date</p>$comment<hr /></div></div>";
echo $comments ;
};
exit;
}
}
}else {
header("location: /blog");
exit;
}
如果您是第一个对帖子发表评论的人,则会显示评论,但在刷新页面之前仍会显示“成为第一个发表评论”的通知。
答案 0 :(得分:1)
尝试将服务器的响应作为json返回。另外,请删除服务器端的出口和标头。
<script type="text/javascript">
$('#submit').click(function (e) {
e.preventDefault();
if (!$('#summernote').summernote('isEmpty')) {
var comment = document.getElementById("summernote").value;
var member_id = 1;
var post_id = 1;
$.ajax ({
type: 'post',
url: 'post_comment.php',
data: {
comment:comment,
member_id:member_id,
post_id:post_id,
},
dataType : "json",
encode : true,
success: function (data) {
$.each(data, function(index, element){
$('#all_comments').append("<div class='comment_div' style='background:red'><div class='small'><p class='text-info'>posted by " +element.comment_author + "on " + element.post_date+"</p>"+element.comment+"<hr /></div></div>");
});
$("#summernote").summernote("reset");
$('.alert').empty();
},
});
}else {
alert('Please enter a comment');
}
return false;
});
</script>
然后是服务器端。
<?php
if (isset($_POST['comment'])) {
$comment = $_POST['comment'];
$member_id = $_POST['member_id'];
$post_id = $_POST['post_id'];
$commentsArray = array();
$stmt = $conn->prepare("INSERT INTO comments (entry_id, member_id, comment) VALUES (?, ?, ?)");
$stmt->bind_param("iis", $post_id, $member_id, $comment);
$stmt->execute();
$entry_id = mysqli_insert_id($conn);
$stmt = $conn->prepare("SELECT comm.comment, comm.comment_date, m.member_screen_name
FROM comments comm
JOIN members m
ON comm.member_id = m.id
WHERE comm.entry_id = ?
AND comm.id = ?
ORDER BY comm.comment_date DESC");
$sql->bind_param("ii", $post_id, $entry_id);
$sql->execute();
$sql_result = $sql->get_result();
if ($stmt_result->num_rows > 0) {
while ($row = $stmt_result->fetch_assoc()) {
$comment_date = date_create($row['comment_date']);
$commentsArray[] = array(
'comment' => $comment,
'post_date' = date_format($comment_date, ' l jS F Y H:i');
'comment_author' => $row['member_screen_name']
);
}
}
echo json_encode($commentsArray);
}
也可以使用浏览器控制台上的“网络”标签查看来自服务器的响应。
答案 1 :(得分:1)
他这样的举止是正常的,并且您永远不会要求通知在评论后不出现。
成功
后更新代码$('.alert-primary').hide()