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

15 votes327 views3 answers
Laravel make model with migration 5.8
PHP Laravel
0 vote331 views2 answers
Laravel collection intersect
PHP Laravel
0 vote316 views1 answer
Laravel 8 - get values of url query strings in controller
PHP Laravel
0 vote326 views1 answer
Last page url in php laravel
PHP Laravel
0 vote391 views1 answer
Failed to open stream permission denied laravel
PHP Laravel
0 vote318 views1 answer
Set laravel local time to indonesia
PHP Laravel
1 vote325 views1 answer
Laravel run query migration
PHP Laravel
0 vote307 views1 answer
Laravel collection pull
PHP Laravel
0 vote323 views1 answer
Remove public or index file from url in laravel
PHP Laravel
2 votes342 views1 answer
Laravel request validation rules for create and update
PHP Laravel