Question

编辑：问题已解决。罪魁祸首是一个错误的单引号：P 显示内容的第一张图片： The first image where content is getting displayed

第二张图片是没有内容显示的地方 The second image is where no content is getting displayed

几天前我已经问过这个问题，我的问题在那里解决了，但是突然又出现了问题，我似乎找不到解决办法。我想做的是加载滚动时将超过10个帖子的帖子，但是当我添加Ajax时却没有显示任何帖子。这是代码：

     index.php code:    
    <?php
    include("includes/header.php");
    include("includes/classes/User.php");
include("includes/classes/Post.php");
if(isset($_POST['post']))
{
    $post=new Post($con,$userLoggedIn);
    $post->submitPost($_POST['post_text'],'none');
}
?>
<div class="user_details column">
    <a href="<?php echo $userLoggedIn; ?>" > <img src="<?php echo $user['profile_pic']; ?>"></a>
    <div class="user_details_left_right">
    <a href="<?php echo $userLoggedIn; ?>">
    <?php
    echo $user['first_name'] . " " . $user['last_name'];
    ?>
    </a>
    <br>
    <?php
    echo "My Posts: " . $user['num_post'] . "<br>";
    echo "Likes: " . $user['num_likes'];
    ?>
    </div>
</div>
<div class="main_column column">
    <form class="post_form" action="index.php" method="POST">
        <textarea name="post_text" id="post_text" placeholder="Write something here..."></textarea>
        <input type="submit" name="post" id="post_button" value="Post">
        <hr>
    </form>
    <!--<?php
    $post=new Post($con,$userLoggedIn);
    $post->loadPostsFriends();
    ?>-->
    <div class="posts_area"></div>
    <img id="loading" src="assets/images/icons/loading.gif">
</div>
<script>
    var userLoggedIn = '<?php echo $userLoggedIn; ?>';
    $(document).ready(function()
    {
        $('#loading').show();
        //ajax request for loading 1st posts
        $.ajax({
           url: "includes/handlers/ajax_load_posts.php",
           type: "POST",
           data: "page=1&userLoggedIn=" + userLoggedIn,
           cache:false,
           success: function(data)
            {
                $("#loading").hide();
                $('.posts_area').html(data);
            }
        });
        $(window).scroll(function()
        {
         var height=$('.posts_area').height(); //div containing posts
         var scroll_top=$(this).scrollTop();
         var page=$('.posts_area').find('.nextPage').val();
         var noMorePosts=$('posts_area').find('.noMorePosts').val();
         if((document.body.scrollHeight == document.body.scrollTop + window.innerHeight) && noMorePosts == 'false')
             {
                $('#loading').show();
                alert("hello");
                var ajaxReq = $.ajax({
                url: "includes/handlers/ajax_load_posts.php",
                type: "POST",
                data: "page=" + page + "&userLoggedIn=" + userLoggedIn,
                cache:false,
                success: function(response)
                {
                 $('.posts_area').find('.nextPage').remove(); //removes current next page
                 $('.posts_area').find('.noMorePosts').remove();
                 $('#loading').hide();
                 $('.posts_area').append(response);
                }
              });
             } //If end
            return false;
        }); //ending of $(window).scroll(function()
    });
</script>
</div>
</body>
</html>

Post.php code:   
<?php
class Post 
{
    private $user_obj;
    private $con;
    public function __construct($con,$user)
    {
        $this->con = $con;
        $this->user_obj = new User($con,$user);
    }
    //$user_obj=new User($con,$userLoggedIn)
    public function submitPost($body,$user_to)
    {
        $body=strip_tags($body); //To remove any HTML tag
        $body=mysqli_escape_string($this->con, $body);
        $check_empty=preg_replace('/\s+/','',$body); //To delete spaces
        if($check_empty != "")
        {
            //Date and time
            $date_added=date("Y-m-d H:i:s");
            //get user name
            $added_by=$this->user_obj->getUsername();
            //If user is watching his/her own profile, user_to is none
            if($user_to == $added_by)
            {
                $user_to = "none";
            }
            //Insert post
            $query = mysqli_query($this->con,"INSERT INTO posts VALUES('','$body','$added_by','$user_to','$date_added','no','no','0')");
            $returned_id=mysqli_insert_id($this->con);
            //Insert noti
            //Update posts count
            $num_posts=$this->user_obj->getNumPosts();
            $num_posts++;
            $update_query=mysqli_query($this->con,"UPDATE users SET num_post='$num_posts' WHERE username='$added_by'");
        }
    }
    public function loadPostsFriends($data,$limit)
    {
        $page=$data['page'];
        $userLoggedIn=$this->user_obj->getUsername();
        if($page == 1)
            $start = 0;
        else
            $start = ($page-1) * $limit;   
        $str=""; //Str to return
        $data_query=mysqli_query($this->con,"SELECT * FROM posts WHERE deleted='no' ORDER BY id DESC");
        if(mysqli_num_rows($data_query) > 0)
        {
        $num_iterations = 0; //number of result checking
        $count=1;
        while($row=mysqli_fetch_array($data_query))
        {
            $id=$row['id'];
            $body=$row['body'];
            $data[] = $id;
            $data[] = $body;
            $added_by=$row['added_by'];
            $date_time=$row['date_added'];
            //prepare user_to string to include it even if not posted to an user
            if($row['user_to'] == "none")
            {
                $user_to="";
            }
            else
            {
               $user_to_obj=new User($con,$row['user_to']);
               $user_to_name=$user_to_obj->getFirstAndLastName();
               $user_to="wrote to <a href'" . $row['user_to'] . "'>" . $user_to_name . "</a>";
            }
            //check if userwho posted has their account closed
            $added_by_obj=new User($this->con,$added_by);
            if($added_by_obj->isClosed())
            {
                continue;
            }
            if($num_iterations++ < $start)
                continue;
            //once 10 posts loaded just break
            if($count > $limit)
            {
                break;
            }
            else
            {
                $count++;    
            }
            $user_details_query=mysqli_query($this->con,"SELECT first_name,last_name,profile_pic FROM users WHERE username='$added_by'");
            $user_row=mysqli_fetch_array($user_details_query);
            $first_name=$user_row['first_name'];
            $last_name=$user_row['last_name'];
            $profile_pic=$user_row['profile_pic'];
            //Datetime
            $date_time_now=date("Y-m-d H:i:s");
            $start_date=new DateTime($date_time); //Post date & time
            $end_date=new DateTime($date_time_now); //Current time
            $interval=$start_date->diff($end_date); //Difference between above 2 dates
            if($interval->y >= 1)
            {
                if($interval==1)
                    $time_message=$interval->y . "year ago"; //1 year ago
                else
                    $time_message=$interval->y . "year ago"; //More than 1 year ago
            }
            else if($interval-> m >= 1)
            {
                if($interval->d == 0)
                {
                    $days=" ago";
                }
                else if($interval-> d == 1)
                {
                    $days=$interval->d . " day ago";
                }
                else
                {
                    $days=$interval->d . " days ago";
                }
                if($interval->m == 1)
                {
                    $time_message=$interval->m . " month" . $days;
                }
                else
                {
                    $time_message=$interval->m . " months" . $days;
                } 
            }
            else if($interval->d >= 1)
            {
                 if($interval-> d == 1)
                {
                    $time_message="Yesterday";
                }
                else
                {
                    $time_message=$interval->d . " days ago";
                }
            }
            else if($interval->h >=1)
            {
                 if($interval-> h == 1)
                {
                    $time_message=$interval->h . " hour ago";
                }
                else
                {
                    $time_message=$interval->h . " hours ago";
                }
            }
            else if($interval->i >=1)
            {
                 if($interval-> i == 1)
                {
                    $time_message=$interval->i . " minute ago";
                }
                else
                {
                    $time_message=$interval->i . " minutes ago";
                }
            }
            else
            {
                 if($interval-> s < 30)
                {
                    $time_message="Just Now!";
                }
                else
                {
                    $time_message=$interval->s . " seconds ago";
                }
            }
            $str .= "<div class='status_post'>
                      <div class='post_profile_pic'>
                       <img src='$profile_pic' width='50'>
                      </div>
                      <div class='posted_by' style='color:#BDBDBD;'>
                       <a href='$added_by'> $first_name $last_name </a> $user_to &nbsp;&nbsp;&nbsp;&nbsp; $time_message
                      </div>
                      <div id='post_body'>$body<br></div>
                     </div><hr>";
        }
            if($count > $limit)
                $str .= "<input type='hidden' class='nextPage' value='" . ($page+1) . "'><input type='hidden' class='noMorePosts' value='false'>";
            else
                $str .= "<input type='hidden' class='noMorePosts' value='true'><p style='text-align:center;'>No more posts!</p>";
        }
        echo $str;
    }
}
?>

user.php code:     
<?php
class User 
{
    private $user;
    private $con;
    public function __construct($con,$user)
    {
        $this->con = $con;
        $user_details_query=mysqli_query($con,"SELECT * FROM users WHERE username='$user'");
        $this->user = mysqli_fetch_array($user_details_query);
    }
    //$user_obj=new User($con,$userLoggedIn)
    public function getUsername()
    {
        return $this->user['username'];
    }
    public function getNumPosts()
    {
        $username=$this->user['username'];
        $query=mysqli_query($this->con,"SELECT num_post FROM users WHERE username='$username'");
        $row=mysqli_fetch_array($query);
        return $row['num_post'];
    }
    public function getFirstAndLastName()
    {
        $username=$this->user['username'];
        $query=mysqli_query($this->con, "SELECT first_name, last_name FROM users WHERE username='$username'");
        $row=mysqli_fetch_array($query);
        return $row['first_name'] . " " . $row['last_name'];
    }
    public function isClosed()
    {
        $username=$this->user['username'];
        $query=mysqli_query($this->con,"SELECT user_closed FROM users WHERE username='$username'");
        $row=mysqli_fetch_array($query);
        if($row['user_closed']=='yes')
            return true;
        else
            return false;
    }
    public function isFriend($username_to_check)
    {
        $usernameComma="," . $username_to_check . ",";
        if((strstr($this->user['friend_array'],$usernameComma)) || $username_to_check==$this->user['username'])
        {
            return true;
        }
        else
        {
            return false;
        }
    }
}
?>

ajaxloadpost.php code:    
<?php
include("../../config/config.php");
include("../classes/User.php");
include("../classes/Post.php");
$limit=10; //Limit post to 10 each time
$posts=new Post($con,$_REQUEST['userLoggedIn']);
$posts->loadPostsFriends($_REQUEST,$limit);
?>

内容未显示。在大学社交媒体网站上对我的项目进行故障排除时遇到的问题

0 个答案: