单击“删除”按钮后删除单个db行

Question

我有一个查询，当单击DB按钮时，希望从DB中删除一行。现在，它正在删除整个DB行。但是我想通过ID删除一行。

，这是 code

add_action('admin_menu', 'conference_register');
function conference_register(){
      add_options_page('Register Conference', 'Conference Registration',  'manage_options', 'conference-registration', 'display_conference');
}

function display_conference(){
    echo "<form method='post'>";
    echo "<div class='wrap'>";
    echo "<h2>Conference Registration User Details</h2>";
    global $wpdb;
    $results = $wpdb->get_results("SELECT `id`,`email`,`details` FROM `conference_register`"); ?>
    <table class="wp-list-table widefat fixed striped pages">
      <thead>
          <tr>
            <th id="posts" class="manage-column column-posts num">ID</th>
            <th id="email" class="manage-column column-email">Email</th>      
            <th id="description" class="manage-column column-description">Details</th>
            <th id="posts" class="manage-column column-posts num">Delete</th>
          </tr>
      </thead>
    <tbody id="the-list">
   <?php foreach($results as $value){
        echo "<tr>";
        echo "<td class='posts column-posts'>".$value->id."</td>";
        echo "<td class='email column-email'>".$value->email."</td>";
        echo "<td class='description column-description'><div id='col-container'>".$value->details."</div></td>";
        echo "<td class='posts column-posts'><input type='submit' name='delete_registration' value='delete'/></td>";
        echo "</tr>";
         if(isset($_POST['delete_registration'])){
            $wpdb->delete( 'conference_register', array( 'id' => $value->id ) );
        }

    }
    echo "</tbody></table></div></form>";
}

用于单击操作的code设置如下所示：

 if(isset($_POST['delete_registration'])){
    $wpdb->delete( 'conference_register', array( 'id' => $value->id ) );
}

我在这里有遗漏什么吗？任何帮助都将不胜感激。

P.S.我想删除一行而不使用jQuery。

Answer 1

如果设置了delete_registration，则在删除行时使用此方法。您需要设置/检查每一行并删除该特定行。

<?php foreach($results as $value){
    echo "<tr>";
    echo "<td class='posts column-posts'>".$value->id."</td>";
    echo "<td class='email column-email'>".$value->email."</td>";
    echo "<td class='description column-description'><div id='col-container'>".$value->details."</div></td>";
    $delRow = "delete_registration_{$value->id}";
    echo "<td class='posts column-posts'><input type='submit' name= $delRow value='delete'/></td>";
    echo "</tr>";
     if(isset($_POST[$delRow])){
        $wpdb->delete( 'conference_register', array( 'id' => $value->id ) );
    }

}

Answer 2

您没有传递id，或者数据库查询语法不正常。

Answer 3

用这个：

 echo "<td class='posts column-posts'><input type='submit' name= 'delete_registration_{$value->id}' value='delete'/></td>";
 echo "</tr>";
  if(isset($_POST[delete_registration_{$value->id}])){
    $wpdb->delete( 'conference_register', array( 'id' => $value->id ) );
 }

这应该能行