# Defining Observers
You can listen for events on a given model by creating an observer class.
Observers are automatically registered by passing the model the observer is associated with.
php tea make:observer name=ProductObserver model=Product
<?php
namespace App\Http\Observers;
use App\Product;
class ProductObserver
{
public function creating(Product $product): void
{
}
public function created(Product $product): void
{
}
public function updating(Product $product): void
{
}
public function updated(Product $product): void
{
}
public function deleting(Product $product): void
{
}
public function deleted(Product $product): void
{
}
}
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Suppose you want to set a slug before creating a product, you can make use of the creating event:
public function creating(Product $product): void
{
$product->slug = strtolower(str_replace(' ', '-', $product->title));
}
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You can delete any unused event to clear the class.