WPTRT Admin Notices

This is a custom class allowing WordPress theme authors to add admin notices to the WordPress dashboard. Its primary purpose is for providing a standardized method of creating admin notices in a consistent manner using the default WordPress styles.

Notices created using this method are automatically dismissible.

Usage

$my_theme_notices = new \WPTRT\AdminNotices\Notices();

// Add a notice.
$my_theme_notices->add( (string) $id, (string) $title, (string) $content, (array) $options );

// Boot things up.
$my_theme_notices->boot();

After you instantiate the Notices object using $my_theme_notices = new \WPTRT\AdminNotices\Notices(); you can add new notices using the add() method.

The arguments of this method are:

Parameter	Type		Description
$id	string	Required	A unique ID for this notice. The ID can contain lowercase latin letters and underscores. It is used to construct the option (or user-meta) key that will be strored in the database.
$title	string	Required	The title for your notice. If you don't want to use a title you can use set it to false.
$message	string	Required	The content for the notice you want to create. Please note that the only acceptable tags here are <p>, <a>, <em>, <strong>.
$options	array	Optional	Extra arguments for this notice. Can be used to alter the notice's default behavior.

The $options argument is an array that can have the following optional items:

Key	Type	Value	Default
scope	string	Can be global or user. Determines if the dismissed status will be saved as an option or user-meta.	global
type	string	Can be one of info, success, warning, error.	info
alt_style	bool	Set to true if you want to use alternative styles. These have a background-color depending on the type argument - in contrast to the normal styles that use a white background.	false
capability	string	The user capability required to see the notice. For a list of all available capabilities please refer to the Roles and Capabilities article.	edit_theme_options
screens	array	An array of screens where the notice will be displayed. For a reference of all available screen-IDs, refer to this article.	[]
option_prefix	string	The prefix that will be used to build the option (or user-meta) name. Can contain lowercase latin letters and underscores. The actual option is built by combining the option_prefix argument with the defined ID from the 1st argument of the add() method.	wptrt_notice_dismissed

Examples

You can add the following code within your theme's existing code.

First we need to instantiate the Notices object:

use WPTRT\AdminNotices\Notices;

$my_theme_notices = new Notices();

To add a simple, default notice:

$my_theme_notices->add(
    'my_theme_notice',                           // Unique ID.
    esc_html__( 'Notice Title', 'textdomain' ),  // The title for this notice.
    esc_html__( 'Notice content', 'textdomain' ) // The content for this notice.
);

The above example will create a new notice that will only show on all dashboard pages. When the notice gets dismissed, a new option will be saved in the database with the key wptrt_notice_dismissed_my_theme_notice. The key gets created by appending the $id to the default prefix for the option (wptrt_notice_dismissed), separated by an underscore.

To add a more customized notice:

$my_theme_notices->add(
    'my_notice',                                  // Unique ID.
    esc_html__( 'Notice Title', 'textdomain' ),   // The title for this notice.
    esc_html__( 'Notice content', 'textdomain' ), // The content for this notice.
    [
        'scope'         => 'user',       // Dismiss is per-user instead of global.
        'screens'       => [ 'themes' ], // Only show notice in the "themes" screen.
        'type'          => 'warning',    // Make this a warning (orange color).
        'alt_style'     => true,         // Use alt styles.
        'option_prefix' => 'my_theme',   // Change the user-meta prefix.
    ]
);

The above example will create a new notice that will only show in the "Themes" screen in the dashboard. When the notice gets dismissed, a new user-meta will be saved and the key for the stored user-meta will be my_theme_my_notice. The key gets created by appending the $id to our defined option_prefix, separated by an underscore.

The Notices class can be used to add multiple notices. Once you have finished adding the notices, you will have to run the boot method so that the notices can be added to the dashboard:

$my_theme_notices->boot();

To sum up all the above, a complete example of how to add an admin notice would look like this:

$my_theme_notices = new \WPTRT\AdminNotices\Notices();
$my_theme_notices->add( 'my_theme_notice', __( 'Title', 'textdomain' ), __( 'Content', 'textdomain' ) );
$my_theme_notices->boot();

Autoloading

You'll need to use an autoloader with this. Ideally, this would be Composer. However, we have a basic autoloader available to include with themes if needed.

Composer

From the command line:

composer require wptrt/admin-notices

WPTRT Autoloader

If using the WPTRT autoloader, use the following code:

include get_theme_file_path( 'path/to/autoload/src/Loader.php' );

$loader = new \WPTRT\Autoload\Loader();
$loader->add( 'WPTRT\\AdminNotices\\Notice', get_theme_file_path( 'path/to/admin-notices/src' ) );
$loader->register();