Installation

Requirements

TYPO3 CMS 13.4 or higher
PHP 8.2 or higher
Composer-based TYPO3 installation (strongly recommended)

The extension requires two additional PHP packages that are pulled in automatically via Composer:

nesbot/carbon ^3.2 — human-readable date/time differences
illuminate/collections ^10.48 — fluent collection helpers

Installation via Composer (Recommended)

composer require lex/notifications

Then activate the extension:

# via CLI
vendor/bin/typo3 extension:activate lex_notifications

# or via Admin Tools > Extensions in the TYPO3 backend

Run the database analyser to create the required tables:

vendor/bin/typo3 database:updateschema

Installation via TER (non-Composer)

Note

Non-Composer installations are supported but not recommended for new projects. Ensure the third-party packages listed above are available via your autoloader.

Download the extension from the TYPO3 Extension Repository.
Upload and install it via Admin Tools > Extensions.
Run Admin Tools > Maintenance > Analyze Database Structure to create the required tables.

Post-Installation Steps

After installation:

Include TypoScript (if you need the frontend plugin):

Go to your root page's TypoScript template record and add the static template "Lex Notifications (lex_notifications)" under Includes > Include static (from extensions).
Clear all caches via Admin Tools > Maintenance.
The backend module Web > Notifications is now available for backend users with the required permissions.

Database Tables

The extension creates two tables:

Table	Purpose
`tx_lexnotifications_domain_model_notification`	Stores in-app (database-channel) notifications for frontend users. Each row represents one unread or archived notification.
`tx_lexnotifications_domain_model_message`	Stores messages composed in the backend module, including recipient lists, delivery channels and send status.