Admin Notice Manager

Manage WordPress admin notices safely from a dedicated admin page. This plugin stores notices in a custom database table and displays them across the WordPress admin.

Features

• Add and delete admin notices from a simple settings page
• Custom DB table ({prefix}anm_notices) for robust storage
• Secure add/delete actions with capability and nonce checks
• Proper WordPress admin notice styles: info, success, warning, error
• Full i18n-ready strings using text domain admin-notice-manager
• Uninstall cleanup drops the custom table and removes related options

Requirements

• WordPress 5.5+
• PHP 7.4+

Installation

1. Copy the plugin folder admin-notice-manager into wp-content/plugins/.
2. In WordPress admin, go to Plugins → Activate “Admin Notice Manager”.
3. Activation will create the custom table using dbDelta.

Usage

1. Open Admin Notice Manager from the left admin menu.
2. Enter a message and select a type:
   • Notice (treated as info)
   • Info
   • Success
   • Warning
   • Error
3. Click Save Notice.
4. The notice will:
   • Render at the top of admin screens with the appropriate styling.
   • Appear under the “Saved” list with a Delete button.

How It Works

• Storage: includes/class-anm-db.php defines a DB layer. Table schema:
  • id BIGINT UNSIGNED AUTO_INCREMENT
  • message TEXT
  • type VARCHAR(20)
  • created_at DATETIME
• Admin page: includes/class-anm-admin.php renders the form and the saved list.
• Actions:
  • Add (admin-post.php?action=anm_save_notice) sanitizes input and inserts into the table.
  • Delete (admin-post.php?action=anm_delete_notice) removes by id.
• Display: Hook admin_notices reads from the table and outputs notices with WP classes.

Security

• All modifying actions are protected by capability checks (manage_options) and nonces.
• All input is sanitized (sanitize_text_field + wp_unslash).
• All output is escaped (esc_html, esc_attr).

Uninstall

• Removing the plugin via WordPress admin triggers uninstall.php which drops the custom table and deletes related options.

Development Notes

• Activation Hook: anm_activate() creates the table via dbDelta.
• Text Domain: admin-notice-manager loaded on plugins_loaded.

License

GPL v2 or later.