Proyectos de Subversion Moodle

<?php

// This file is part of Moodle - http://moodle.org/

//

// Moodle is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// Moodle 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 General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**

 * This script deals with starting a new attempt at a quiz.

 *

 * Normally, it will end up redirecting to attempt.php - unless a password form is displayed.

 *

 * This code used to be at the top of attempt.php, if you are looking for CVS history.

 *

 * @package   mod_quiz

 * @copyright 2009 The Open University

 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

use mod_quiz\quiz_attempt;

use mod_quiz\quiz_settings;

require_once(__DIR__ . '/../../config.php');

require_once($CFG->dirroot . '/mod/quiz/locallib.php');

// Get submitted parameters.

$id = required_param('cmid', PARAM_INT); // Course module id

$forcenew = optional_param('forcenew', false, PARAM_BOOL); // Used to force a new preview

$page = optional_param('page', -1, PARAM_INT); // Page to jump to in the attempt.

$quizobj = quiz_settings::create_for_cmid($id, $USER->id);

// This script should only ever be posted to, so set page URL to the view page.

$PAGE->set_url($quizobj->view_url());

// During quiz attempts, the browser back/forwards buttons should force a reload.

$PAGE->set_cacheable(false);

// Check login and sesskey.

require_login($quizobj->get_course(), false, $quizobj->get_cm());

require_sesskey();

$PAGE->set_heading($quizobj->get_course()->fullname);

// If no questions have been set up yet redirect to edit.php or display an error.

if (!$quizobj->has_questions()) {

    if ($quizobj->has_capability('mod/quiz:manage')) {

        redirect($quizobj->edit_url());

    } else {

        throw new \moodle_exception('cannotstartnoquestions', 'quiz', $quizobj->view_url());

    }

}

// Create an object to manage all the other (non-roles) access rules.

$timenow = time();

$accessmanager = $quizobj->get_access_manager($timenow);

// Validate permissions for creating a new attempt and start a new preview attempt if required.

list($currentattemptid, $attemptnumber, $lastattempt, $messages, $page) =

    quiz_validate_new_attempt($quizobj, $accessmanager, $forcenew, $page, true);

// Check access.

if (!$quizobj->is_preview_user() && $messages) {

    $output = $PAGE->get_renderer('mod_quiz');

    throw new \moodle_exception('attempterror', 'quiz', $quizobj->view_url(),

            $output->access_messages($messages));

}

if ($accessmanager->is_preflight_check_required($currentattemptid)) {

    // Need to do some checks before allowing the user to continue.

    $mform = $accessmanager->get_preflight_check_form(

            $quizobj->start_attempt_url($page), $currentattemptid);

    if ($mform->is_cancelled()) {

        $accessmanager->back_to_view_page($PAGE->get_renderer('mod_quiz'));

    } else if (!$mform->get_data()) {

        // Form not submitted successfully, re-display it and stop.

        $PAGE->set_url($quizobj->start_attempt_url($page));

        $PAGE->set_title($quizobj->get_quiz_name());

        $accessmanager->setup_attempt_page($PAGE);

        $output = $PAGE->get_renderer('mod_quiz');

        if (empty($quizobj->get_quiz()->showblocks)) {

            $PAGE->blocks->show_only_fake_blocks();

        }

        echo $output->start_attempt_page($quizobj, $mform);

        die();

    }

    // Pre-flight check passed.

    $accessmanager->notify_preflight_check_passed($currentattemptid);

}

if ($currentattemptid) {

    if ($lastattempt->state == quiz_attempt::OVERDUE) {

        redirect($quizobj->summary_url($lastattempt->id));

    } else {

        redirect($quizobj->attempt_url($currentattemptid, $page));

    }

}

$attempt = quiz_prepare_and_start_new_attempt($quizobj, $attemptnumber, $lastattempt);

// Redirect to the attempt page.

redirect($quizobj->attempt_url($attempt->id, $page));