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

19 votes111 views2 answers
Parse json phph
PHP
8 votes105 views4 answers
Woocommerce checkout shortcode
PHP
0 vote117 views1 answer
Order table in laravel
PHP Laravel
2 votes106 views2 answers
Nginx reverse proxy nextcloud
PHP
0 vote142 views1 answer
Laravelda urlga requestlarni cheklash
PHP Laravel
0 vote112 views1 answer
Random element in faker
PHP
11 votes132 views3 answers
Blade condition if else laravel
PHP Laravel
-1 vote96 views3 answers
Php 7
PHP
0 vote99 views1 answer
Php location same page
PHP
0 vote113 views1 answer
Php print array nice format (multiple arrays)
PHP