Proyectos de Subversion Moodle

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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
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/**
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 * This script deals with starting a new attempt at a quiz.
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 *
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 * Normally, it will end up redirecting to attempt.php - unless a password form is displayed.
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 *
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 * This code used to be at the top of attempt.php, if you are looking for CVS history.
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 *
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 * @package   mod_quiz
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 * @copyright 2009 The Open University
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 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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 */
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use mod_quiz\quiz_attempt;
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use mod_quiz\quiz_settings;
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require_once(__DIR__ . '/../../config.php');
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require_once($CFG->dirroot . '/mod/quiz/locallib.php');
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// Get submitted parameters.
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$id = required_param('cmid', PARAM_INT); // Course module id
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$forcenew = optional_param('forcenew', false, PARAM_BOOL); // Used to force a new preview
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$page = optional_param('page', -1, PARAM_INT); // Page to jump to in the attempt.
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$quizobj = quiz_settings::create_for_cmid($id, $USER->id);
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// This script should only ever be posted to, so set page URL to the view page.
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$PAGE->set_url($quizobj->view_url());
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// During quiz attempts, the browser back/forwards buttons should force a reload.
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$PAGE->set_cacheable(false);
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// Check login and sesskey.
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require_login($quizobj->get_course(), false, $quizobj->get_cm());
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require_sesskey();
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$PAGE->set_heading($quizobj->get_course()->fullname);
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// If no questions have been set up yet redirect to edit.php or display an error.
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if (!$quizobj->has_questions()) {
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    if ($quizobj->has_capability('mod/quiz:manage')) {
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        redirect($quizobj->edit_url());
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    } else {
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        throw new \moodle_exception('cannotstartnoquestions', 'quiz', $quizobj->view_url());
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    }
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}
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// Create an object to manage all the other (non-roles) access rules.
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$timenow = time();
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$accessmanager = $quizobj->get_access_manager($timenow);
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// Validate permissions for creating a new attempt and start a new preview attempt if required.
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list($currentattemptid, $attemptnumber, $lastattempt, $messages, $page) =
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    quiz_validate_new_attempt($quizobj, $accessmanager, $forcenew, $page, true);
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// Check access.
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if (!$quizobj->is_preview_user() && $messages) {
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    $output = $PAGE->get_renderer('mod_quiz');
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    throw new \moodle_exception('attempterror', 'quiz', $quizobj->view_url(),
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            $output->access_messages($messages));
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}
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if ($accessmanager->is_preflight_check_required($currentattemptid)) {
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    // Need to do some checks before allowing the user to continue.
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    $mform = $accessmanager->get_preflight_check_form(
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            $quizobj->start_attempt_url($page), $currentattemptid);
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    if ($mform->is_cancelled()) {
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        $accessmanager->back_to_view_page($PAGE->get_renderer('mod_quiz'));
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    } else if (!$mform->get_data()) {
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        // Form not submitted successfully, re-display it and stop.
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        $PAGE->set_url($quizobj->start_attempt_url($page));
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        $PAGE->set_title($quizobj->get_quiz_name());
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        $accessmanager->setup_attempt_page($PAGE);
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        $output = $PAGE->get_renderer('mod_quiz');
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        if (empty($quizobj->get_quiz()->showblocks)) {
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            $PAGE->blocks->show_only_fake_blocks();
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        }
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        echo $output->start_attempt_page($quizobj, $mform);
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        die();
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    }
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    // Pre-flight check passed.
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    $accessmanager->notify_preflight_check_passed($currentattemptid);
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}
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if ($currentattemptid) {
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    if ($lastattempt->state == quiz_attempt::OVERDUE) {
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        redirect($quizobj->summary_url($lastattempt->id));
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    } else {
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        redirect($quizobj->attempt_url($currentattemptid, $page));
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    }
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}
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$attempt = quiz_prepare_and_start_new_attempt($quizobj, $attemptnumber, $lastattempt);
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// Redirect to the attempt page.
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redirect($quizobj->attempt_url($attempt->id, $page));