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我做了一個Facebook風格的發佈和評論頁面，用戶可以發佈帖子並對帖子發表評論。顯示從數據庫返回的數組數據，無需刷新頁面
我的第一個問題是當我試圖對帖子發表評論時，插入到我的數據庫中的postID是最新的帖子，即使我對不同的postID發表評論。
接下來的問題是我想實現的是，在發表評論後，即使我不刷新頁面，評論部分也會彈出評論。我已經嘗試尋找一種可能的解決方案，但沒有一種符合我想要做的。
這裏是我的網頁代碼：
post.php中
<?php
foreach ($post_model->getcomment($postid) as $value) {
if($postid == $value['post_uid']){
?>
<div id="mycomments" class="col-lg-12" style="background:#eff9c7;">
<img src="./<?php echo $session_image?>" class="pull-left" style="border-radius:50%;margin-top:10px;" width="7%" height="7%" />
<p style="margin-top:18px;line-height:15px;"><strong class="font-1" style="margin-left:10px;"><?php echo $session_fname.' '.$session_lname?></strong> <?php echo $value['pc_comment']?><br>
<span class="" style="margin-left:10px;font-size:.9em;color:gray;"><abbr class="timeago" title="<?php echo $value['pc_datesend']?>"></abbr></span>
</p>
</div>
<?php
}
}
?>
<div class="col-lg-12" style="background:#eff9c7;">
<!-- <img src="../img/icons/no-icon-available.png" class="pull-left" style="border-radius:50%;margin-top:10px;" width="7%" height="7%" />-->
<input type="text" name="mycomment" id="mycomment" class="form-control pull-right" style="width:92%;margin-top:17px;" placeholder="Comments..." />
</div>
下面的代碼將我的評論發送到我的數據庫：
$(document).ready(function() {
$('input[name="mycomment"]').on('keyup', function(e){
e.preventDefault();
var comments = $(this).val();
var sid = $("#sid").val();
var ses_image = <?php echo json_encode($session_image); ?>;
var ses_fname = <?php echo json_encode($session_fname); ?>;
var ses_lname = <?php echo json_encode($session_lname); ?>;
if(e.keyCode == 13){
if(comments.length){
$.ajax({
url: "../controller/post_controller.php",
type: "POST",
data:{
"id":sid,
"comments":comments,
"image":ses_image,
"fname":ses_fname,
"lname":ses_lname
},
dataType: "json",
success: function(data){
alert(Object.keys(data).length);
comments = '';
$("#sid").val('');
$("#mycomments").append(); // i dont know what to put here
}
});
else
alert("Please write something in comment.");
}
});
});
，最後這個我功能，我插入並選擇我的數據：
class post {
public $dbh;
public function __construct(PDO $dbh){
$this->dbh = &$dbh;
}
function comment($postuid,$uimage,$ufname,$ulname,$comment){
$sql = "INSERT INTO pcomment (post_uid,pc_uimage,pc_ufname,pc_ulname,pc_comment,pc_datesend) VALUES('$postuid','$uimage','$ufname','$ulname','$comment',NOW())";
$query = $this->dbh->prepare($sql);
var_dump($query);
$result = ($query->execute()? true :false);
return $result;
}
function getcomment($mmyid){
$sql = "SELECT * FROM pcomment WHERE post_uid = '$mmyid'";
$stmt = $this->dbh->prepare($sql);
$stmt->execute(array("0"));
$active_data = $stmt->fetchAll(PDO::FETCH_ASSOC);
return $active_data;
}
}
Controller.php這樣
if(session_id() == '' || !isset($_SESSION))
session_start();
$session_id = $_SESSION['id'];
require_once('../model/dbconfig.php');
require_once('../model/post.php');
$database = new Database();
$conn = $database->getConnection();
$com = new post($conn);
$comments = ($_POST['comments']);
$uid = ($_POST['id']);
$pc_uimage = ($_SESSION['image']);
$pc_ufname = ($_SESSION['firstname']);
$pc_ulname = ($_SESSION['lastname']);
if(isset($_POST['id']) && isset($_POST['comments']))
{
$res = $com->comment($uid,$pc_uimage,$pc_ufname,$pc_ulname,$comments);
}
$res = $com->getcomment($uid);
echo json_encode($res);