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

1 vote180 views1 answer
Convert 1 digit to five digits laravel
PHP Laravel
5 votes188 views2 answers
In laravel date duration validation rule
PHP Laravel
0 vote198 views1 answer
Pusher in laravel array_merge(): Argument #2 is not an array
PHP Laravel
3 votes221 views1 answer
Laravel check if array is empty
PHP Laravel
5 votes210 views3 answers
Laravel grouping where
PHP Laravel
0 vote140 views2 answers
Laravel restrict home route access
PHP Laravel
3 votes176 views2 answers
Laravel migration on delete set null
PHP Laravel
6 votes181 views4 answers
Enset laravel session
PHP Laravel
0 vote194 views1 answer
Laravel collection average
PHP Laravel
7 votes271 views4 answers
Laravel is route name
PHP Laravel