Question

我有一个＆＃39;帖子＆＃39;表格（包含提交的帖子）和“回复”＃39; table（包含对所有帖子的所有回复）在我的数据库中。

如果用户回复帖子，我希望包含回复的数据库中的行也包含原始帖子的ID。

除了post_id值（每个条目为零）之外，所有内容都输入到数据库中。我该如何解决这个问题？

home.php：

head = dummy->next;

post.php中：

<?php 
 // top_content.php includes the database connection file.
 include "top_content.php";
 // Include our script to convert MySQL timestamp to 'ago' format.
 include "time_ago.php";
 // Create an object for the time conversion functions
 $timeAgoObject = new convertToAgo; 

 include "menu_and_logo.php"; 
 // Query the database for all submitted posts. //
 $sql = "SELECT * FROM Posts ORDER BY date DESC";
 // Store the result in a variable. //
 $res = mysqli_query($db, $sql) or die(mysqli_error); 
 // Check that the result has > 0 rows; that at least one post exists in the database. //
 if(mysqli_num_rows($res) != 0) {
      // The mysqli_fetch_array retrieves and returns the next row of our query, which is then assigned to $row. //
      // Then it executes the echos, and the procedure begins anew. This is how we get the post list. //
      while($row = mysqli_fetch_array($res)) {
           // Set the post_id variable equal to the post_id of each post. //
           $post_id = $row['post_id'];
           $ts = $row['date'];
           $post_title = $row['post_title'];
           $post_creator = $row['post_creator'];
           // Convert Date Time
           $convertedTime = ($timeAgoObject -> convert_datetime($ts));
           // Then convert to 'ago' time 
           $when = ($timeAgoObject -> makeAgo($convertedTime));
           // Display the data of each row. THe while row will execute all posts, creating a list
           // display.
           echo '<div>';
           // The text is set as the post title, and points to post.php?id=*the post_id of the post. //
           // In post.php, we check that $_GET['id'] is set (that the user is visiting post.php?id=some_integer),
           // then query the database for the respective post, and echo the relevant content. //
           echo '<a href="post.php?id='.$post_id.'">'.$post_title.'</a>';
           echo '<p>by <a href = "view_profile.php?user='.$post_creator.'">'.$post_creator.'</a> '.$when.'</p>'; 
           echo '</div>';

      }

 }else {
    echo "There are no posts.";
 }

?>

reply_parse.php：

 <!DOCTYPE html>

<?php
 session_start();
 // Include our script to convert MySQL timestamp to 'ago' format.
 include "time_ago.php";
 // Create an object for the time conversion functions
 $timeAgoObject = new convertToAgo; 
 // Iniate connection to the database.
 include "db_connect.php";
 // Check that the user is visiting post.php?id=some_integer).
 if($_GET['id']) {
      // Set the post id as a variable, for convenience.
    $post_id = $_GET['id'];
      // Query the database for the post that corresponds to the post-title link that has been clicked.
      $sql = "SELECT * FROM Posts WHERE post_id = '".$post_id."' ";
      $res = mysqli_query($db, $sql)or die(mysqli_error());
      // Check that there exists a row containing the relevant post id.
      if(mysqli_num_rows($res) != 0)    {
           // Store the current row's array of data as a variable.
           while($row = mysqli_fetch_array($res)) {
                // Set the current row's data as variables.
                $post_title = $row['post_title'];
                $post_content = $row['post_content'];
                $post_creator = $row['post_creator'];
                $ts = $row['date'];
                    // Convert Date Time
                $convertedTime = ($timeAgoObject -> convert_datetime($ts));
                // Then convert to ago time 
                $when = ($timeAgoObject -> makeAgo($convertedTime));
                // Display the relevant post data.
                echo '<h2>'.$post_title.'</h2>';
                echo '<p>Submitted by <a href = "view_profile.php?user='.$post_creator.'">'.$post_creator.'</a> '.$when.'</p><nr><br>';
                echo ''.$post_content.'';    
           }

      }else{
           echo "This post does not exist.";
      }

 }else{
      header("home.php");   
 }

?>
<!-- I've moved the html tags here because the file needs the $post_title     variable before setting the title -->
<html>
<head><title><?php echo ''.$post_title.' - Lboro Maths'; ?></title></head>

<body>
     <!-- #2: The form where users can submit replies to the original post. -->
     <form action="reply_parse.php" method="POST">
          <input type="textarea" name="reply_content" placeholder="Post a reply...">
          <input type="submit" name="submit_reply" value="Reply">
     </form>

</body>
</html>

Answer 1

我们需要插入一个隐藏字段并将“＆＃39; id＆＃39;”的变量GET值传递给它。

原件：

<body>
     <!-- #2: The form where users can submit replies to the original post. -->
     <form action="reply_parse.php" method="POST">
          <input type="textarea" name="reply_content" placeholder="Post a reply...">
          <input type="submit" name="submit_reply" value="Reply">
     </form>
</body>

修正：

<body>
     <!-- #2: The form where users can submit replies to the original post. -->
     <?php
         echo "<form action='reply_parse.php' method='POST'>";
         echo "<input type='hidden' name ='post_id' value='$post_id'>";
         echo "<input type='textarea' name='reply_content' placeholder='Post a reply...'>";
         echo "<input type='submit' name='submit_reply' value='Reply'>";
         echo "</form>";
     ?>
</body>

Answer 2

你没有＆＃34; id＆＃34;在post.php中你的表单中的字段，表单是POST而不是GET的方法，所以＆＃34; reply_parse.php＆＃34;正在变得没有＆＃34; id＆＃34;。我认为这就是问题所在。

如何指定回复帖子的原始帖子的ID？

2 个答案: