test_app/app/Listeners/DeleteWareaListener.php

<?php

namespace App\Listeners;

use App\Events\DeleteWarea;
use App\Models\WarZone;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Contracts\Queue\ShouldQueue;

class DeleteWareaListener
{
    /**
     * Create the event listener.
     *
     * @return void
     */
    public function __construct()
    {
        //
    }

    /**
     * Handle the event.
     *
     * @param  DeleteWarea  $event
     * @return void
     */
    public function handle(DeleteWarea $event)
    {
        $warea=$event->warea;
        $war_name= explode('战区',$warea->name)[0];
        WarZone::where('war_name',$war_name)->delete();
    }
}