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DrydockLeaseReleaseController.php
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			<?php

			final class DrydockLeaseReleaseController extends DrydockLeaseController {

			public function handleRequest(AphrontRequest $request) {
			$viewer = $request->getViewer();
			$id = $request->getURIData('id');

			$lease = id(new DrydockLeaseQuery())
			->setViewer($viewer)
			->withIDs(array($id))
			->requireCapabilities(
			array(
			PhabricatorPolicyCapability::CAN_VIEW,
			PhabricatorPolicyCapability::CAN_EDIT,
			))
			->executeOne();
			if (!$lease) {
			return new Aphront404Response();
			}

			$lease_uri = '/lease/'.$lease->getID().'/';
			$lease_uri = $this->getApplicationURI($lease_uri);

			if (!$lease->canRelease()) {
			return $this->newDialog()
			->setTitle(pht('Lease Not Releasable'))
			->appendParagraph(
			pht(
			'Leases can not be released after they are destroyed.'))
			->addCancelButton($lease_uri);
			}

			if ($request->isFormPost()) {
			$command = DrydockCommand::initializeNewCommand($viewer)
			->setTargetPHID($lease->getPHID())
			->setCommand(DrydockCommand::COMMAND_RELEASE)
			->save();

			$lease->scheduleUpdate();

			return id(new AphrontRedirectResponse())->setURI($lease_uri);
			}

			return $this->newDialog()
			->setTitle(pht('Release Lease?'))
			->appendParagraph(
			pht(
			'Forcefully releasing a lease may interfere with the operation '.
			'of the lease holder and trigger destruction of the underlying '.
			'resource. It can not be undone.'))
			->addSubmitButton(pht('Release Lease'))
			->addCancelButton($lease_uri);
			}

			}