Laravel Magazine
Understanding Laravel's Event System: Events, Listeners, and Observers
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Understanding Laravel's Event System: Events, Listeners, and Observers

One of the clearest signals that a Laravel codebase is growing up is when developers stop stuffing everything into controllers and start using events. The event system is Laravel's built-in mechanism for decoupling application logic — separating what happened from what should happen because of it. This lesson explains how it works, why it matters, and how to choose between events, observers, and the various listener patterns. The Core Concept: Decoupling What Happened From What Follows Imagine a user registers on your platform. After registration, your app needs to send a welcome email, create a trial subscription, notify the sales team, and fire a marketing pixel. The naive approach puts all of that inside UserController::store(). It works, but now your controller knows about email, billing, Slack, and analytics. Every new requirement means editing the same method. The event-driven approach instead fires a single event — UserRegistered — and lets any number of listeners react to it in...

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