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

0 vote126 views1 answer
Doiffernce between text and string in laravel migration
PHP Laravel
1 vote113 views1 answer
Groupby in laravel with count
PHP Laravel
0 vote115 views3 answers
SQLSTATE[42S02]: Base table or view not found: 1146 Table many to many in laravel
PHP Laravel
7 votes471 views3 answers
Laravel active menu item
PHP Laravel
3 votes130 views1 answer
Wherehas laravel search
PHP Laravel
8 votes128 views3 answers
Laravel redirect back with errors and input
PHP Laravel
0 vote120 views2 answers
Laravel login register api
PHP Laravel
1 vote113 views3 answers
Laravel override factory values in database seeder
PHP Laravel
0 vote65 views1 answer
Laravel middleware in controller
PHP Laravel
1 vote107 views1 answer
Laravel createmany example
PHP Laravel