我已经创建了一个带有图像上传器的自定义元盒，它将多个图像上传到一个图库中，然后我可以查询。这一切都可以接受这样一个事实，即图像不会显示为媒体库中帖子的附件。它们显示为未连接。各位有什么想法吗？

<?php
// Add the Meta Box
function agch_properties_add_custom_meta_box() {
    add_meta_box(
        \'custom_meta_box\', // $id
        \'Property Photos\', // $title
        \'agch_properties_show_custom_meta_box\', // $callback
        \'properties\', // $page
        \'normal\', // $context
        \'high\'); // $priority
}
add_action(\'add_meta_boxes\', \'agch_properties_add_custom_meta_box\');

// Field Array
$prefix = \'agch_properties_\';
$custom_meta_fields = array(
    array(
        \'label\'=> \'Upload Images\',
        \'desc\'  => \'This is the gallery images on the single item page.\',
        \'id\'    => $prefix.\'gallery\',
        \'type\'  => \'gallery\'
    ),
);

// The Callback
function agch_properties_show_custom_meta_box($object) {
        global $custom_meta_fields, $post;
        // Use nonce for verification
        echo \'<input type="hidden" name="custom_meta_box_nonce" value="\'.wp_create_nonce(basename(__FILE__)).\'" />\';

        // Begin the field table and loop
        echo \'<table class="form-table">\';
        foreach ($custom_meta_fields as $field) {
                // get value of this field if it exists for this post
                $meta = get_post_meta($post->ID, $field[\'id\'], true);
                // begin a table row with
                echo \'<tr>
                <th><label for="\'.$field[\'id\'].\'">\'.$field[\'label\'].\'</label></th>
                <td>\';
                switch($field[\'type\']) {
                        case \'gallery\':
                        $meta_html = null;
                        if ($meta) {
                                $meta_html .= \'<ul class="agch_properties_gallery_list">\';
                                $meta_array = explode(\',\', $meta);
                                foreach ($meta_array as $meta_gall_item) {
                                        $meta_html .= \'<li><div class="agch_properties_gallery_container"><span class="agch_properties_gallery_close"><img id="\' . esc_attr($meta_gall_item) . \'" src="\' . wp_get_attachment_thumb_url($meta_gall_item) . \'"></span></div></li>\';
                                }
                                $meta_html .= \'</ul>\';
                        }
                        echo \'<input id="agch_properties_gallery" type="hidden" name="agch_properties_gallery" value="\' . esc_attr($meta) . \'" />
                        <span id="agch_properties_gallery_src">\' . $meta_html . \'</span>
                        <div class="agch_gallery_button_container"><input id="agch_properties_gallery_button" type="button" value="Add Images" /></div>\';
                        break;
                } //end switch
                echo \'</td></tr>\';
        } // end foreach
        echo \'</table>\'; // end table
}

// Save the Data
function agch_properties_save_custom_meta($post_id) {
        global $custom_meta_fields;
        // Verify nonce
        if ($_POST && !wp_verify_nonce($_POST[\'custom_meta_box_nonce\'], basename(__FILE__)))
                return $post_id;
        // Check autosave
        if (defined(\'DOING_AUTOSAVE\') && DOING_AUTOSAVE)
                return $post_id;
        // Check permissions
        if (\'properties\' == get_post_type()) {
                if (!current_user_can(\'edit_page\', $post_id))
                        return $post_id;
        } elseif (!current_user_can(\'edit_post\', $post_id)) {
                return $post_id;
        }
        // Loop through meta fields
        foreach ($custom_meta_fields as $field) {
                $new_meta_value = esc_attr($_POST[$field[\'id\']]);
        $meta_key = $field[\'id\'];
                $meta_value = get_post_meta( $post_id, $meta_key, true );
                // If theres a new meta value and the existing meta value is empty
                if ( $new_meta_value && $meta_value == null ) {
                        add_post_meta( $post_id, $meta_key, $new_meta_value, true );
                // If theres a new meta value and the existing meta value is different
                } elseif ( $new_meta_value && $new_meta_value != $meta_value ) {
                        update_post_meta( $post_id, $meta_key, $new_meta_value );
                } elseif ( $new_meta_value == null && $meta_value ) {
                        delete_post_meta( $post_id, $meta_key, $meta_value );
                }
        }
}
add_action(\'save_post\', \'agch_properties_save_custom_meta\');

function AGCH_properties_load_wp_admin_style() {
        wp_enqueue_media();
        wp_enqueue_script(\'media-upload\');
        wp_enqueue_style( \'AGCH_properties_admin_css\', get_template_directory_uri() . \'/library/css/properties_gallery_admin.css\' );
        wp_enqueue_script( \'AGCH_properties_admin_script\', get_template_directory_uri() . \'/library/js/properties_gallery_admin.js\' );
}
add_action( \'admin_enqueue_scripts\', \'AGCH_properties_load_wp_admin_style\' );
?>