案例：我使用图像采集器。js脚本为我的自定义元框创建图像选择器。但这对WP 3.6已经不起作用了，所以我尝试用新的媒体上传器创建一个图像选择器元盒。

我将其用于JSON对象，但如何将这些属性从JSON对象保存到metabox？

jQuery图像选择器：

jQuery(function(jQuery) {

    // Uploading files
    var file_frame;
    var wp_media_post_id = wp.media.model.settings.post.id; // Store the old id
    var set_to_post_id = 5; // Set this

    formfield = jQuery(this).siblings(\'.custom_upload_image\');
    preview = jQuery(this).siblings(\'.custom_preview_image\');

    jQuery(\'.custom_upload_image_button\').live(\'click\', function( event ){

        event.preventDefault();

        // If the media frame already exists, reopen it.
        if ( file_frame ) {
            // Set the post ID to what we want
            file_frame.uploader.uploader.param( \'post_id\', set_to_post_id );
            // Open frame
            file_frame.open();
            return;
        } else {
            // Set the wp.media post id so the uploader grabs the ID we want when initialised
            wp.media.model.settings.post.id = set_to_post_id;
        }

        // Create the media frame.
        file_frame = wp.media.frames.file_frame = wp.media({
            title: jQuery( this ).data( \'uploader_title\' ),
            button: {
                text: jQuery( this ).data( \'uploader_button_text\' ),
            },
            multiple: false  // Set to true to allow multiple files to be selected
        });

        // When an image is selected, run a callback.
        file_frame.on( \'select\', function() {
            // We set multiple to false so only get one image from the uploader
            attachment = file_frame.state().get(\'selection\').first().toJSON();

                // Do something with attachment.id and/or attachment.url here
                console.log(attachment.url);
                console.log(attachment.id);

                imgurl = attachment.url;
                id = attachment.id;
                formfield.val(id);
                preview.attr(\'src\', imgurl);

                // Restore the main post ID
            wp.media.model.settings.post.id = wp_media_post_id;
        });

        // Finally, open the modal
        file_frame.open();
    });

    // Restore the main ID when the add media button is pressed
    jQuery(\'a.add_media\').on(\'click\', function() {
        wp.media.model.settings.post.id = wp_media_post_id;
    });

});

// Save data from meta box
    function save($post_id) {
        // verify nonce
        if (!wp_verify_nonce($_POST[\'mytheme_meta_box_nonce\'], basename(__FILE__))) {
            return $post_id;
        }

        // check autosave
        if (defined(\'DOING_AUTOSAVE\') && DOING_AUTOSAVE) {
            return $post_id;
        }

        // check permissions
        if (\'page\' == $_POST[\'post_type\']) {
            if (!current_user_can(\'edit_page\', $post_id)) {
                return $post_id;
            }
        } elseif (!current_user_can(\'edit_post\', $post_id)) {
            return $post_id;
        }

        foreach ($this->_meta_box[\'fields\'] as $field) {
            $old = get_post_meta($post_id, $field[\'id\'], true);
            $new = $_POST[$field[\'id\']];

            if ($new && $new != $old) {
                update_post_meta($post_id, $field[\'id\'], $new);
            } elseif (\'\' == $new && $old) {
                delete_post_meta($post_id, $field[\'id\'], $old);
            }
            elseif ($new == \'\') {
                delete_post_meta($post_id, $field[\'id\'], $old);
            }
        }
    }