Question

我正在写一个插件，我有一个问题。我想创建一个按钮，从我的数据库中删除一行。

    idx = pd.IndexSlice
    housholdSizeAbove2 = ( df.HouseholdSize > 2 )
    df.loc[ idx[ housholdSizeAbove2, 1996, :] , 'HouseholdSize' ] 
Traceback (most recent call last):
  File "python", line 1, in <module>
KeyError: 'MultiIndex Slicing requires the index to be fully lexsorted tuple len (3), lexsort depth (2)'

我无法为每张图片创建删除按钮。有什么建议吗？

Answer 1

此代码应该有效：

global $wpdb;

$links = $wpdb->get_results("SELECT * FROM wp_jslider;");
if ($wpdb->num_rows == 0) {
    echo 'No images, please upload.';
} else {
    foreach ($links as $link) {
        echo '<img src="'.$link->url.'">';
        echo '<form enctype="multipart/form-data" action="" method="POST"><button type="submit" value="'.$link->id.'" name="del">Delete</button></form>';
    }
    if (isset($_POST['del'])) {
        $id = $_POST['del'];
        global $wpdb;
        $wpdb->query("DELETE FROM wp_jslider WHERE id = $id");
    }
}

从数据库中删除每个图像

1 个答案: