Optimistic Locking Laravel

<?php

function transfer($fromAccountId, $toAccountId, $balance)
{
  $fromQuery = Account::whereId($fromAccountId);
  if (! $fromQuery->exists()) {
    throw new InvalidAccountException();
  }

  $toQuery = Account::whereId($toAccountId);
  if (! $toQuery->exists()) {
    throw new InvalidAccountException();
  }

  do {
    $fromAccount = $fromQuery->first();
    if ($fromAccount->balance < $amount) {
      throw new InsufficientBalanceException();
    }
    $updated = Account::whereId($fromAccountId)
      ->where('updated_at', '=', $fromAccount->updated_at)
      ->update(['balance' => $fromAccount->balance - $amount]);
  } while (! $updated);

  do {
    $toAccount = $toQuery->first();    
    $updated = Account::whereId($toAccountId)
      ->where('updated_at', '=', $toAccount->updated_at)
      ->update(['balance' => $toAccount->balance + $amount]);
  } while (! $updated);

  $transaction = new Transaction();
  $transaction->from_account_id = $fromAccountId;
  $transaction->to_account_id   = $toAccountId;
  $transaction->amount          = $amount;
  $transaction->save();
}

Source: gist.githubusercontent.com

Similar codes

7 votes334 views3 answers
Install php 5.5 ubuntu 20.05
PHP
0 vote334 views1 answer
<?php /* vim: set expandtab sw=4 ts=4 sts=4: */ /** * Main loader script * * @package PhpMyAdmin */ declare(strict_types=1);
PHP
1 vote366 views1 answer
How to insert multiple data at a time with create method in laravel
PHP
0 vote361 views1 answer
Group by not working - Laravel
PHP
0 vote322 views1 answer
How to validate multi image upload in laravel
PHP
0 vote314 views1 answer
One-through-many
PHP
2 votes322 views5 answers
Config file php
PHP
0 vote312 views1 answer
Laravel nova resolveUsing
PHP
8 votes356 views1 answer
Laravel create symbolic link storage
PHP Laravel
0 vote447 views1 answer
Drupal 9 entity.repository load entity by UUID
PHP Drupal