Event System: Delete Database when Deleting Tenant

Next, I want to demonstrate the power of event system in the stancl/tenancy package. We have seen an example earlier in this course when creating a database and migrating tables when a tenant is created. You can listen to an event and have a lot of classes executed on that event.

In the TenantServiceProvider, we have already seen a job pipeline when a tenant is being created.

app/Providers/TenantServiceProvider.php:

class TenancyServiceProvider extends ServiceProvider
{
    // By default, no namespace is used to support the callable array syntax.
    public static string $controllerNamespace = '';
 
    public function events()
    {
        return [
            // Tenant events
            Events\CreatingTenant::class => [],
            Events\TenantCreated::class => [ 
                JobPipeline::make([
                    Jobs\CreateDatabase::class,
                    Jobs\MigrateDatabase::class,
                    // Jobs\SeedDatabase::class,
 
                    // Your own jobs to prepare the tenant.
                    // Provision API keys, create S3 buckets, anything you want!
 
                ])->send(function (Events\TenantCreated $event) {
                    return $event->tenant;
                })->shouldBeQueued(false), // `false` by default, but you probably want to make this `true` for production.
            ], 
            Events\SavingTenant::class => [],
            Events\TenantSaved::class => [],
            Events\UpdatingTenant::class => [],
            Events\TenantUpdated::class => [],
            Events\DeletingTenant::class => [],
            Events\TenantDeleted::class => [
                JobPipeline::make([
                    Jobs\DeleteDatabase::class,
                ])->send(function (Events\TenantDeleted $event) {
                    return $event->tenant;
                })->shouldBeQueued(false), // `false` by default, but you probably want to make this `true` for production.
            ],
 
            // ...
        ];
    }
 
    // ...
}

Now, let's try to delete the tenant and see what happens. We have an event, TenantDeleted, and then...