如何在WordPress中以帖子类型插入附件并更新自定义字段

我有一个名为[‘ notifications’ ]的自定义帖子类型, 其中[[notifications]]中的所有帖子都有一个名为[‘ attachment’ ]的自定义字段。

我希望用户从前端将附件上传到库中
如果上传成功
获取附件的文件名
然后通过其ID更新自定义帖子类型[‘ notifications’ ]中的帖子
将帖子中的自定义字段[‘ attachment’ ]更新为文件名

自定义字段的meta_key为[‘ _ct_text_57fc8ec4573cd’ ]
【如何在WordPress中以帖子类型插入附件并更新自定义字段】这就是我到目前为止
对于前端

< ?php if (isset($_POST['upload'])) { if (!empty($_FILES)) { $file = $_FILES['file']; $attachment_id = upload_user_file($file); } } ?> < form action="" enctype="multipart/form-data" method="post"> < input name="file" type="file"> < /form>

内置函数

function upload_user_file($file = array()) {require_once(ABSPATH. 'wp-admin/includes/admin.php'); $file_return = wp_handle_upload($file, array('test_form' => false)); if (isset($file_return['error']) || isset($file_return['upload_error_handler'])) { return false; } else {$filename = $file_return['file']; $post_ID_attachment = 33; $attachment = array('post_mime_type' => $file_return['type'], 'post_title' => $post_ID_attachment, 'post_content' => '', 'post_status' => 'inherit', 'guid' => $file_return['url'] ); $attachment_id = wp_insert_attachment($attachment, $file_return['url']); require_once(ABSPATH. 'wp-admin/includes/image.php'); $attachment_data = http://www.srcmini.com/wp_generate_attachment_metadata($attachment_id, $filename); wp_update_attachment_metadata($attachment_id, $attachment_data); if (0 < intval($attachment_id)) { return $attachment_id; }/* UPDATE ATTACHMENT BELOW*/ update_post_meta($post_ID_attachment,'_ct_text_57fc8ec4573cd', $filename); } return false; }

不知道我是否做对了。上面的代码已成功插入附件, 但未更新帖子类型[‘ notifications’ ]中的自定义字段
#1在update_post_meta查询之前, 你的函数中有一个return语句。尝试以下代码：

function upload_user_file($file = array()) {require_once(ABSPATH. 'wp-admin/includes/admin.php'); $file_return = wp_handle_upload($file, array('test_form' => false)); if (isset($file_return['error']) || isset($file_return['upload_error_handler'])) { return false; } else {$filename = $file_return['file']; $post_ID_attachment = 33; $attachment = array('post_mime_type' => $file_return['type'], 'post_title' => $post_ID_attachment, 'post_content' => '', 'post_status' => 'inherit', 'guid' => $file_return['url'] ); $attachment_id = wp_insert_attachment($attachment, $file_return['url']); require_once(ABSPATH. 'wp-admin/includes/image.php'); $attachment_data = http://www.srcmini.com/wp_generate_attachment_metadata($attachment_id, $filename); wp_update_attachment_metadata($attachment_id, $attachment_data); /* UPDATE ATTACHMENT BELOW*/ update_post_meta($post_ID_attachment,'_ct_text_57fc8ec4573cd', $filename); if (0 < intval($attachment_id)) { return $attachment_id; } } return false; }

另外我不确定你的代码中是否需要这些require_once-s, 因为在function.php中需要加载所有内容。