PhabricatorPackagesVersionNameTransaction.php
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	<?php

	final class PhabricatorPackagesVersionNameTransaction
	extends PhabricatorPackagesVersionTransactionType {

	const TRANSACTIONTYPE = 'packages.version.name';

	public function generateOldValue($object) {
	return $object->getName();
	}

	public function applyInternalEffects($object, $value) {
	$object->setName($value);
	}

	public function getTitle() {
	return pht(
	'%s changed the name of this version from %s to %s.',
	$this->renderAuthor(),
	$this->renderOldValue(),
	$this->renderNewValue());
	}

	public function getTitleForFeed() {
	return pht(
	'%s updated the name for %s from %s to %s.',
	$this->renderAuthor(),
	$this->renderObject(),
	$this->renderOldValue(),
	$this->renderNewValue());
	}

	public function validateTransactions($object, array $xactions) {
	$errors = array();

	if ($this->isEmptyTextTransaction($object->getName(), $xactions)) {
	$errors[] = $this->newRequiredError(
	pht('Versions must have a name.'));
	return $errors;
	}

	foreach ($xactions as $xaction) {
	$value = $xaction->getNewValue();
	try {
	PhabricatorPackagesVersion::assertValidVersionName($value);
	} catch (Exception $ex) {
	$errors[] = $this->newInvalidError($ex->getMessage(), $xaction);
	}
	}

	if (!$this->isNewObject()) {
	foreach ($xactions as $xaction) {
	$errors[] = $this->newInvalidError(
	pht('Once a version is created, its name can not be changed.'),
	$xaction);
	}
	}

	return $errors;
	}

	}