PhabricatorPackagesPackagePublisherTransaction.php
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PhabricatorPackagesPackagePublisherTransaction.php
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			<?php

			final class PhabricatorPackagesPackagePublisherTransaction
			extends PhabricatorPackagesPackageTransactionType {

			const TRANSACTIONTYPE = 'packages.package.publisher';

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

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

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

			$current_value = $object->getPublisherPHID();
			if ($this->isEmptyTextTransaction($current_value, $xactions)) {
			$errors[] = $this->newRequiredError(
			pht(
			'You must select a publisher when creating a package.'));
			return $errors;
			}

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

			$viewer = $this->getActor();
			foreach ($xactions as $xaction) {
			$publisher_phid = $xaction->getNewValue();

			$publisher = id(new PhabricatorPackagesPublisherQuery())
			->setViewer($viewer)
			->withPHIDs(array($publisher_phid))
			->setRaisePolicyExceptions(false)
			->requireCapabilities(
			array(
			PhabricatorPolicyCapability::CAN_VIEW,
			PhabricatorPolicyCapability::CAN_EDIT,
			))
			->executeOne();

			if (!$publisher) {
			$errors[] = $this->newInvalidError(
			pht(
			'Publisher "%s" is invalid: the publisher must exist and you '.
			'must have permission to edit it in order to create a new '.
			'package.',
			$publisher_phid),
			$xaction);
			continue;
			}

			$object->attachPublisher($publisher);
			}

			return $errors;
			}

			}