Custom Upload Adds Ghost File

我已经在“二十一五”主题的新安装上尝试了这一点。我正在向允许上载的页面添加metabox-每当我在新页面上载文件时，它会上载该文件，但也会使用post_id 作为名称。然后将幻像ID保存为post meta。如果我先发布帖子，然后上传文件，一切正常。

这是我的save_post hook，下面的代码是最低限度的，没有验证，只是为了复制问题。

/**
 * Save Metaboxes
 * @param int $post_id
 */
function save_custom_meta_boxes( $post_id ) {

    // If we\'re not in the right place, bailout
    if( ( defined( \'DOING_AUTOSAVE\' ) && DOING_AUTOSAVE ) || ! isset( $post_id ) || ! isset( $_POST[\'post_type\'] ) || ! current_user_can( \'edit_post\', $post_id ) ) {
        return;
    }

    if( isset( $_FILES[\'_uploaded_file\'] ) && ! empty( $_FILES[\'_uploaded_file\'][\'name\'] ) ) {
        require_once( ABSPATH . \'wp-admin/includes/image.php\' );    
        $uploadStatus   = wp_handle_upload( $_FILES[\'_uploaded_file\'], array( \'test_form\' => false ) );
        $fileID         = wp_insert_attachment( array(
                \'post_mime_type\'    => $uploadStatus[\'type\'],
                \'post_title\'        => preg_replace( \'/\\.[^.]+$/\', \'\', basename( $uploadStatus[\'file\'] ) ),
                \'post_content\'      => \'\',
                \'post_status\'       => \'inherit\'
            ),
            $uploadStatus[\'file\'],
            $post_id
        );
        $attachmentData = wp_generate_attachment_metadata( $fileID, $uploadStatus[\'file\'] );
        wp_update_attachment_metadata( $fileID,  $attachmentData );
        update_post_meta( $post_id, \'_uploaded_file\', $fileID );
    }
}
add_action( \'save_post\', \'save_custom_meta_boxes\' );

Metabox - 这是metabox的显示。

/** `page_meta` Callback Function **/
function page_meta_cb( $post ) { 
    wp_nonce_field( \'page_meta_metabox\', \'page_meta_nonce\' );
    $uploaded_file_id = get_post_meta( $post->ID, \'_uploaded_file\', true );
  ?>

    <table style="width:100%;">
        <tbody>
            <tr id="uploaded_file">
                <td style="width:8%;min-width:105px;">
                    <label for="uploaded_file_input" style="font-weight:bold;">Uploaded File</label><br />
                </td>
                <td>
                    <input type="file" style="width:100%;" name="_uploaded_file" value="" id="uploaded_file_input" />

                    <?php if( is_numeric( $uploaded_file_id ) ) : ?>

                        <div class="fileLink">
                            <a href="post.php?post=<?php echo $uploaded_file_id; ?>&action=edit" target="_blank">Edit File - <?php echo get_the_title( $uploaded_file_id ); ?></a>
                                <br />
                                <br />
                        </div>

                    <?php endif; ?>

                </td>
            </tr>
        </tbody>
    </table>

  <?php
} // END Metabox

媒体库如下所示：

Phantom Upload in Media Library

同样，问题只在上传到新帖子时出现——已发布的帖子在上传时没有问题。问题可能是什么？

add_filter(\'post_edit_form_tag\', function() { echo \' enctype="multipart/form-data"\'; }); add_action( \'save_post\', \'save_custom_meta_boxes\', 10, 2 ); function save_custom_meta_boxes( $post_id, $post ) { // If we\'re not in the right place, bailout if( ( defined( \'DOING_AUTOSAVE\' ) && DOING_AUTOSAVE ) || ! isset( $post_id ) || $post->post_type !== \'page\' || ! current_user_can( \'edit_page\', $post_id ) ) { return; } if ( !isset( $_POST[\'page_meta_nonce\'] ) || ! wp_verify_nonce( $_POST[\'page_meta_nonce\'], \'page_meta_metabox\' ) ) { return; } if( ! empty( $_FILES[\'_uploaded_file\'][\'name\'] ) ) { $uploadStatus = wp_handle_upload( $_FILES[\'_uploaded_file\'], array( \'test_form\' => false ) ); if ( $uploadStatus && ! isset( $uploadStatus[\'error\'] ) ) { $fileID = wp_insert_attachment( array( \'post_mime_type\' => $uploadStatus[\'type\'], \'post_title\' => preg_replace( \'/\\.[^.]+$/\', \'\', basename( $uploadStatus[\'file\'] ) ), \'post_content\' => \'\', \'post_status\' => \'inherit\' ), $uploadStatus[\'file\'], $post_id ); if( $fileID ) { $attachmentData = wp_generate_attachment_metadata( $fileID, $uploadStatus[\'file\'] ); wp_update_attachment_metadata( $fileID, $attachmentData ); update_post_meta( $post_id, \'_uploaded_file\', $fileID ); } } } } add_action( \'add_meta_boxes_page\', \'page_meta\' ); function page_meta() { add_meta_box("page_upload_image", \'Upload image\', \'page_meta_cb\'); } /** `page_meta` Callback Function **/ function page_meta_cb( $post ) { wp_nonce_field( \'page_meta_metabox\', \'page_meta_nonce\' ); $uploaded_file_id = get_post_meta( $post->ID, \'_uploaded_file\', true ); ?> <div> <table style="width:100%;"> <tbody> <tr id="uploaded_file"> <td style="width:8%;min-width:105px;"> <label for="uploaded_file_input" style="font-weight:bold;">Uploaded File</label><br /> </td> <td> <input type="file" style="width:100%;" name="_uploaded_file" value="" id="uploaded_file_input" /> <?php if( is_numeric( $uploaded_file_id ) ) : ?> <div class="fileLink"> <a href="post.php?post=<?php echo $uploaded_file_id; ?>&action=edit" target="_blank">Edit File - <?php echo get_the_title( $uploaded_file_id ); ?></a> <br /> <br /> </div> <?php endif; ?> </td> </tr> </tbody> </table> </div> <?php } // END Metabox

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