因此，我正在尝试在Wordpress 3.7.1中使用自定义批量操作，但迄今为止没有成功。我使用的基础是http://www.skyverge.com/blog/add-custom-bulk-action, 这里出了问题：
$wp_list_table = _get_list_table(\'WP_Posts_List_Table\');
$action = $wp_list_table->current_action();
该操作本身是用jQuery添加的，并显示。
当我使用提示显示$action 值它始终为空，这意味着脚本的其余部分不会激发。有什么想法吗？整个代码：
<?php
/*
Plugin Name: FoxRunSoftware Custom Bulk Action Demo
Plugin URI: http://www.foxrunsoftware.net/articles/wordpress/add-custom-bulk-action/
Description: A working demonstration of a custom bulk action
Author: Justin Stern
Author URI: http://www.foxrunsoftware.net
Version: 0.1
Copyright: © 2012 Justin Stern (email : [email protected])
License: GNU General Public License v3.0
License URI: http://www.gnu.org/licenses/gpl-3.0.html
*/
if (!class_exists(\'FRS_Custom_Bulk_Action\')) {
class FRS_Custom_Bulk_Action {
public function __construct() {
if(is_admin()) {
// admin actions/filters
add_action(\'admin_footer-edit.php\', array(&$this, \'custom_bulk_admin_footer\'));
add_action(\'load-edit.php\', array(&$this, \'custom_bulk_action\'));
add_action(\'admin_notices\', array(&$this, \'custom_bulk_admin_notices\'));
}
}
/**
* Step 1: add the custom Bulk Action to the select menus
*/
function custom_bulk_admin_footer() {
global $post_type;
if($post_type == \'post\') {
?>
<script type="text/javascript">
jQuery(document).ready(function() {
jQuery(\'<option>\').val(\'export\').text(\'<?php _e(\'Export\')?>\').appendTo("select[name=\'action\']");
jQuery(\'<option>\').val(\'export\').text(\'<?php _e(\'Export\')?>\').appendTo("select[name=\'action2\']");
});
</script>
<?php
}
}
/**
* Step 2: handle the custom Bulk Action
*
* Based on the post http://wordpress.stackexchange.com/questions/29822/custom-bulk-action
*/
function custom_bulk_action() {
global $typenow;
$post_type = $typenow;
if($post_type == \'post\') {
// get the action
$wp_list_table = _get_list_table(\'WP_Posts_List_Table\'); // depending on your resource type this could be WP_Users_List_Table, WP_Comments_List_Table, etc
$action = $wp_list_table->current_action();
$allowed_actions = array("export");
if(!in_array($action, $allowed_actions)) return;
// security check
check_admin_referer(\'bulk-posts\');
// make sure ids are submitted. depending on the resource type, this may be \'media\' or \'ids\'
if(isset($_REQUEST[\'post\'])) {
$post_ids = array_map(\'intval\', $_REQUEST[\'post\']);
}
if(empty($post_ids)) return;
// this is based on wp-admin/edit.php
$sendback = remove_query_arg( array(\'exported\', \'untrashed\', \'deleted\', \'ids\'), wp_get_referer() );
if ( ! $sendback )
$sendback = admin_url( "edit.php?post_type=$post_type" );
$pagenum = $wp_list_table->get_pagenum();
$sendback = add_query_arg( \'paged\', $pagenum, $sendback );
switch($action) {
case \'export\':
// if we set up user permissions/capabilities, the code might look like:
//if ( !current_user_can($post_type_object->cap->export_post, $post_id) )
// wp_die( __(\'You are not allowed to export this post.\') );
$exported = 0;
foreach( $post_ids as $post_id ) {
if ( !$this->perform_export($post_id) )
wp_die( __(\'Error exporting post.\') );
$exported++;
}
$sendback = add_query_arg( array(\'exported\' => $exported, \'ids\' => join(\',\', $post_ids) ), $sendback );
break;
default: return;
}
$sendback = remove_query_arg( array(\'action\', \'action2\', \'tags_input\', \'post_author\', \'comment_status\', \'ping_status\', \'_status\', \'post\', \'bulk_edit\', \'post_view\'), $sendback );
wp_redirect($sendback);
exit();
}
}
/**
* Step 3: display an admin notice on the Posts page after exporting
*/
function custom_bulk_admin_notices() {
global $post_type, $pagenow;
if($pagenow == \'edit.php\' && $post_type == \'post\' && isset($_REQUEST[\'exported\']) && (int) $_REQUEST[\'exported\']) {
$message = sprintf( _n( \'Post exported.\', \'%s posts exported.\', $_REQUEST[\'exported\'] ), number_format_i18n( $_REQUEST[\'exported\'] ) );
echo "<div class=\\"updated\\"><p>{$message}</p></div>";
}
}
function perform_export($post_id) {
// do whatever work needs to be done
return true;
}
}
}
new FRS_Custom_Bulk_Action();
还有更多信息，在我看来，WP\\u List\\u Table只返回空值。以下是$wp\\U list\\U表格的内容，有什么想法吗？：
object(WP_Posts_List_Table)#8848 (10) {
["hierarchical_display"]=> NULL
["comment_pending_count"]=> NULL
["user_posts_count"]=> NULL
["sticky_posts_count"]=> int(0)
["items"]=> NULL
["_args"]=> array(4) {
["plural"]=> string(5) "posts"
["singular"]=> string(0) ""
["ajax"]=> bool(false)
["screen"]=> object(WP_Screen)#8846 (16) {
["action"]=> string(0) ""
["base"]=> string(4) "edit"
["columns":"WP_Screen":private]=> int(0)
["id"]=> string(15) "edit-shop_order"
["in_admin":protected]=> string(4) "site"
["is_network"]=> bool(false)
["is_user"]=> bool(false)
["parent_base"]=> NULL
["parent_file"]=> NULL
["post_type"]=> string(10) "shop_order"
["taxonomy"]=> string(0) ""
["_help_tabs":"WP_Screen":private]=> array(0) { }
["_help_sidebar":"WP_Screen":private]=> string(0) ""
["_options":"WP_Screen":private]=> array(0) { }
["_show_screen_options":"WP_Screen":private]=> NULL
["_screen_settings":"WP_Screen":private]=> NULL
}
}
["_pagination_args"]=> array(0) { }
["screen"]=> object(WP_Screen)#8846 (16) {
["action"]=> string(0) ""
["base"]=> string(4) "edit"
["columns":"WP_Screen":private]=> int(0)
["id"]=> string(15) "edit-shop_order"
["in_admin":protected]=> string(4) "site"
["is_network"]=> bool(false)
["is_user"]=> bool(false)
["parent_base"]=> NULL
["parent_file"]=> NULL
["post_type"]=> string(10) "shop_order"
["taxonomy"]=> string(0) ""
["_help_tabs":"WP_Screen":private]=> array(0) { }
["_help_sidebar":"WP_Screen":private]=> string(0) ""
["_options":"WP_Screen":private]=> array(0) { }
["_show_screen_options":"WP_Screen":private]=> NULL
["_screen_settings":"WP_Screen":private]=> NULL
}
["_actions"]=> NULL ["_pagination"]=> NULL
}
