gnu-social/plugins/Poll/actions/respondpoll.php

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<?php
/**
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2011, StatusNet, Inc.
*
* Respond to a Poll
*
* PHP version 5
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Poll
* @package StatusNet
* @author Brion Vibber <brion@status.net>
* @copyright 2011 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
* @link http://status.net/
*/
if (!defined('STATUSNET')) {
// This check helps protect against security problems;
// your code file can't be executed directly from the web.
exit(1);
}
/**
* Respond to a Poll
*
* @category Poll
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @copyright 2010 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
* @link http://status.net/
*/
class RespondPollAction extends Action
{
protected $user = null;
protected $error = null;
protected $complete = null;
protected $poll = null;
protected $selection = null;
/**
* Returns the title of the action
*
* @return string Action title
*/
function title()
{
// TRANS: Page title for poll response.
return _m('Poll response');
}
/**
* For initializing members of the class.
*
* @param array $args misc. arguments
*
* @return boolean true
* @throws ClientException
*/
function prepare(array $args = [])
{
parent::prepare($args);
if ($this->boolean('ajax')) {
GNUsocial::setApi(true);
}
$this->user = common_current_user();
if (empty($this->user)) {
// TRANS: Client exception thrown trying to respond to a poll while not logged in.
throw new ClientException(_m('You must be logged in to respond to a poll.'),
403);
}
if ($this->isPost()) {
$this->checkSessionToken();
}
$id = $this->trimmed('id');
$this->poll = Poll::getKV('id', $id);
if (empty($this->poll)) {
// TRANS: Client exception thrown trying to respond to a non-existing poll.
throw new ClientException(_m('Invalid or missing poll.'), 404);
}
$selection = intval($this->trimmed('pollselection'));
if ($selection < 1 || $selection > count($this->poll->getOptions())) {
// TRANS: Client exception thrown responding to a poll with an invalid answer.
throw new ClientException(_m('Invalid poll selection.'));
}
$this->selection = $selection;
return true;
}
/**
* Handler method
*
* @return void
*/
function handle()
{
parent::handle();
if ($this->isPost()) {
$this->respondPoll();
} else {
$this->showPage();
}
return;
}
/**
* Add a new Poll
*
* @return void
*/
function respondPoll()
{
try {
$notice = Poll_response::saveNew($this->user->getProfile(),
$this->poll,
$this->selection);
} catch (ClientException $ce) {
$this->error = $ce->getMessage();
$this->showPage();
return;
}
if ($this->boolean('ajax')) {
$this->startHTML('text/xml;charset=utf-8');
$this->elementStart('head');
// TRANS: Page title after sending a poll response.
$this->element('title', null, _m('Poll results'));
$this->elementEnd('head');
$this->elementStart('body');
$form = new PollResultForm($this->poll, $this);
$form->show();
$this->elementEnd('body');
$this->endHTML();
} else {
common_redirect($this->poll->getUrl(), 303);
}
}
/**
* Show the Poll form
*
* @return void
*/
function showContent()
{
if (!empty($this->error)) {
$this->element('p', 'error', $this->error);
}
$form = new PollResponseForm($this->poll, $this);
$form->show();
return;
}
/**
* Return true if read only.
*
* MAY override
*
* @param array $args other arguments
*
* @return boolean is read only action?
*/
function isReadOnly($args)
{
if ($_SERVER['REQUEST_METHOD'] == 'GET' ||
$_SERVER['REQUEST_METHOD'] == 'HEAD') {
return true;
} else {
return false;
}
}
}