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

14 votes223 views4 answers
Magento 2 create admin user
PHP
1 vote219 views2 answers
How to get last id in database
PHP
0 vote289 views1 answer
Latavel attach method
PHP
3 votes206 views2 answers
Using laravel back function on blade
PHP
33 votes212 views6 answers
Migrate specific migration laravel
PHP Laravel
0 vote215 views1 answer
Php days in hours
PHP
0 vote207 views1 answer
How we show full name of month in posts
PHP
0 vote209 views1 answer
Ssss
PHP
6 votes221 views5 answers
Jetstream laravel
PHP
3 votes234 views1 answer
Laravel back button
PHP Laravel