Problem: context help in dashboard -> tools -> backup, is empty or missing
Situation:
- After upgrading WordPress to version >= 3.3
- WordPress plugin wp-db-backup version 2.2.3 (current as of Mar, 2013)
Symptoms:
- Context help tab on the backup page is missing or empty
- With WP_DEBUG enabled you see
“Notice: add_contextual_help is deprecated since version 3.3! Use get_current_screen()->add_help_tab() instead.”
The Hack:
- File: /…/plugins/wp-db-backup/wp-db-backup.php
- Replace the function admin_menu(), near line 604, in with the following:
function admin_menu() {
$_page_hook = add_management_page(__('Backup','wp-db-backup'), __('Backup','wp-db-backup'), 'import', $this->basename, array(&$this, 'backup_menu')); // $_page_hook = "tools_page_wp-db-backup"
# add_action( $action_name_tag, $callback_function_to_add [, $priority=10 [, $num_accepted_args=1 ]] );
add_action('load-' . $_page_hook, array(&$this, 'admin_load'));
# start of dwb flail to fix missing context help tab, and prevent dashboard debug Notice:
# "add_contextual_help is deprecated since version 3.3! Use get_current_screen()->add_help_tab() instead."
# wp docs suggest $screen = get_current_screen(); DOES NOT WORK FROM WITHIN THIS CLASS $screen_obj is NULL
# add_action( $action_name_tag, $callback_function_to_add [, $priority=10 [, $num_accepted_args=1 ]] );
# in wp >= 3.3, might also be possible with static method WP_Screen::add_old_compat_help( $screen, $help )
#echo "<pre>[".basename(__FILE__)."](".__LINE__.') get_class_methods (\'WP_Screen\') : '; var_dump( get_class_methods ('WP_Screen') ); echo "</pre>"; exit;
if ( method_exists( 'WP_Screen', 'get') ) {
#if ( class_exists( 'WP_Screen', false ) ) { # also works
$screen_obj = WP_Screen::get($_page_hook);
$screen_obj->add_help_tab( array(
'id' => $this->basename, //unique id for the tab
'title' => 'Backup', //unique visible title for the tab
'content' => $this->help_menu(), //actual help text
'callback' => false //optional function to callback
) );
} # end of dwb flail
elseif ( function_exists('add_contextual_help') ) { // fallback to wp < 3.3
$text = $this->help_menu();
add_contextual_help($_page_hook, $text);
}
}
Please comment, whether you have success or not. Thank you.