erpsaas/app/Observers/TransactionObserver.php

<?php

namespace App\Observers;

use App\Models\Accounting\JournalEntry;
use App\Models\Accounting\Transaction;
use Illuminate\Support\Facades\DB;

class TransactionObserver
{
    /**
     * Handle the Transaction "created" event.
     */
    public function created(Transaction $transaction): void
    {
        //
    }

    /**
     * Handle the Transaction "updated" event.
     */
    public function updated(Transaction $transaction): void
    {
        //
    }

    /**
     * Handle the Transaction "deleting" event.
     */
    public function deleting(Transaction $transaction): void
    {
        DB::transaction(static function () use ($transaction) {
            $transaction->journalEntries()->each(fn (JournalEntry $entry) => $entry->delete());
        });
    }

    /**
     * Handle the Transaction "deleted" event.
     */
    public function deleted(Transaction $transaction): void
    {
        //
    }

    /**
     * Handle the Transaction "restored" event.
     */
    public function restored(Transaction $transaction): void
    {
        //
    }

    /**
     * Handle the Transaction "force deleted" event.
     */
    public function forceDeleted(Transaction $transaction): void
    {
        //
    }
}