我有一个评论系统,所以当按下提交按钮时,它会将评论发送到数据库,然后将其添加到页面上的评论列表中。
评论.php
<div id="comments" itemscope itemtype="http://schema.org/UserComments">
<?php do { ?>
<div class="comment shadow effect">
<p class="left tip" title="<?php echo $row_getComments['comment_author'];?> Said">
<img class="avatar" src="<?php echo $row_getComments['avatarurl'];?>" /></p>
<p class="body right" itemprop="creator"><?php echo $row_getComments['comment_entry'];?></p>
<div class="details small">
<span class="blue"><?php echo timeBetween($row_getComments['communt_date'],time());?></span> · <a class="red" href="#" onclick="$(this).delete_comment(<?php echo $row_getComments['comment_id'];?>); return false;">Remove</a>
</div>
</div>
<?php } while ($row_getComments = mysql_fetch_assoc($getComments)); ?>
</div>
//Add Comment//
<div class="add_comment">
<div class="write shadow comment">
<p class="left">
<img class="avatar" src="#" />
</p>
<form method="POST" name="addcomment">
<p class="textarea right"><input type="hidden" name="username" value="<?php echo $_SESSION['username'];?>" />
<textarea class="left" cols="40" rows="5" name="post_entry"></textarea>
<input class="left" value="SEND" type="submit" />
</p> </form>
</div>
<a onclick="$(this).add_comment(<?php echo $row_getSinglePost['post_id'];?>);return false;" class="right effect shadow" href="#">Add Comment</a>
</div>
ajax.js- 这是它发送和接收信息的方式。我知道提交按钮有效,因为它会变灰
jQuery.fn.add_comment = function (page_id) {
var that = $(this);
that.hide(10, function () {
that.prev().show();
});
that.parent().find('input[type=submit]').click(function () {
var value = $(this).prev().val();
if (value.length < 3) {
$(this).prev().addClass('error');
return false;
} else {
var input = $(this);
input.prev().attr('disabled', true);
input.attr('disabled', true);
$.post("ajax.php", {
post_id: page_id,
comment: value
}, function (data) {
if (data.error) {
alert("Your Comment Can Not Be Posted");
} else {
that.parent().prev('.comments').append('<div class="comment rounded5"><p class="left"><img class="avatar" src="' + data.avatar + '" /></p><p class="body right small">' + data.comment + '<br /><div class="details small"><span class="blue">' + data.time + '</span> · <a class="red" href="#" onclick="$(this).delete_comment(' + data.id + '); return false;">Remove</a></div></p></div>');
input.prev().val('');
}
input.prev().attr('disabled', false);
input.attr('disabled', false);
},'json');
}
return false;
});
};
ajax.php
require_once('connections/Main.php');
$username = $_SESSION['username'];
mysql_select_db($database_Main);
function getavatar($username){
$result = mysql_query("SELECT profile_pic FROM `users` WHERE `username` = '$username' LIMIT 1");
$row = mysql_fetch_row($result);
return $row[0];
}
if(isset($_POST['post_id']) and isset($_POST['comment'])){
$post_id = intval($_POST['post_id']);
$comment = mysql_escape_string($_POST['comment']);
$time = time();
$insertcom = mysql_query("INSERT INTO `blog_comments` (`author`, `post_num`, `comment_entry`, `communt_date`) VALUES ($username, '{$post_id}', '{$comment}', '{$time}')");
if($insertcom){
$id = mysql_insert_id();
exit(json_encode(array(
'id' => $id,
'avatar' => getavatar($username),
'time' => timeBetween($time, time()),
'comment' => $comment,
)));
}
}
另外,如果说查询不起作用,我将如何错误检查以提交错误?