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Nette Database Nested Transaction

Nested transaction in Nette\Database.


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Contributte

This package is no longer developed here. In favor of contributte/database.

Install

$ composer require minetro/ntdb

Resources

Inspired by these articles:

Usage

Provide nested transaction via savepoints.

Support

  • MySQL / MySQLi
  • PostgreSQL
  • SQLite

API

  • $t->begin
  • $t->commit
  • $t->rollback
  • $t->transaction or $t->t
  • $t->promise

Begin

Starts transaction.

$t = new Transaction(new Connection(...));
$t->begin();

Commit

Commit changes in transaction.

$t = new Transaction(new Connection(...));
$t->begin();
// some changes..
$t->commit();

Rollback

Revert changes in transaction.

$t = new Transaction(new Connection(...));

$t->begin();
try {
    // some changes..
    $t->commit();
} catch (Exception $e) {
    $t->rollback();
}

Transaction

Combine begin, commit and rollback to one method.

On success it commits changes, if exceptions is thrown it rollbacks changes.

$t = new Transaction(new Connection(...));

$t->transaction(function() {
    // some changes..
});

// or alias

$t->t(function() {
    // some changes..
});

Promise

Another attitude to transaction.

$t = new Transaction(new Connection(...));

$t->promise()->then(
    function() {
        // Logic.. (save/update/remove some data)
    }, 
    function () {
        // Success.. (after commit)
    },
    function() {
        // Failed.. (after rollback)
    }      
);

UnresolvedTransactionException

Log unresolved transaction.

Idea by Ondrej Mirtes (https://ondrej.mirtes.cz/detekce-neuzavrenych-transakci).

$t = new Transaction(new Connection(...));
$t->onUnresolved[] = function($exception) {
    Tracy\Debugger::log($exception);
};

Nette

EXTENSION

extensions:
    ntdb: Minetro\Database\Transaction\DI\Transaction

That's all. You can let nette\di autowired it to your services/presenters.

NEON

Register as service in your config file.

services:
    - Minetro\Database\Transaction\Transaction

On multiple connections you have to specific one.

services:
    - Minetro\Database\Transaction\Transaction(@nette.database.one.connection)
    # or
    - Minetro\Database\Transaction\Transaction(@nette.database.two.connection)

Repository | Presenter

use Minetro\Database\Transaction\Transaction;

class MyRepository {

    function __construct(Connection $connection) {
        $this->transaction = new Transaction($connection);
    }

    // OR

    function __construct(Context $context) {
        $this->transaction = new Transaction($context->getConnection());
    }
}

class MyPresenter {

    public function processSomething() {
        $transaction->transaction(function() {
            // Save one..

            // Make other..

            // Delete from this..

            // Update everything..
        });
    }
}

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