Actualización
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281
main/admin/course_import.php
Normal file
281
main/admin/course_import.php
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<?php
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/* For licensing terms, see /license.txt */
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/**
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* This tool allows platform admins to create courses by uploading a CSV file
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* Copyright (c) 2005 Bart Mollet <bart.mollet@hogent.be>.
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*/
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/**
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* Validates imported data.
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*
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* @param array $courses
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*
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* @return array
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*/
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function validate_courses_data($courses)
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{
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$errors = [];
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$coursecodes = [];
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foreach ($courses as $index => $course) {
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$course['line'] = $index + 1;
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// 1. Check whether mandatory fields are set.
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$mandatory_fields = ['Code', 'Title', 'CourseCategory'];
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foreach ($mandatory_fields as $field) {
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if (empty($course[$field])) {
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$course['error'] = get_lang($field.'Mandatory');
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$errors[] = $course;
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}
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}
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// 2. Check current course code.
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if (!empty($course['Code'])) {
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// 2.1 Check whether code has been already used by this CVS-file.
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if (isset($coursecodes[$course['Code']])) {
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$course['error'] = get_lang('CodeTwiceInFile');
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$errors[] = $course;
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} else {
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// 2.2 Check whether course code has been occupied.
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$courseInfo = api_get_course_info($course['Code']);
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if (!empty($courseInfo)) {
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$course['error'] = get_lang('CodeExists');
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$errors[] = $course;
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}
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}
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$coursecodes[$course['Code']] = 1;
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}
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// 3. Check whether teacher exists.
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$teacherList = getTeacherListInArray($course['Teacher']);
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if (!empty($teacherList)) {
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foreach ($teacherList as $teacher) {
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$teacherInfo = api_get_user_info_from_username($teacher);
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if (empty($teacherInfo)) {
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$course['error'] = get_lang('UnknownTeacher').' ('.$teacher.')';
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$errors[] = $course;
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}
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}
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}
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if (!empty($course['CourseCategory'])) {
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$categoryInfo = CourseCategory::getCategory($course['CourseCategory']);
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if (empty($categoryInfo)) {
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CourseCategory::addNode(
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$course['CourseCategory'],
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$course['CourseCategoryName'] ? $course['CourseCategoryName'] : $course['CourseCategory'],
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'TRUE',
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null
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);
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}
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} else {
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$course['error'] = get_lang('NoCourseCategorySupplied');
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$errors[] = $course;
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}
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}
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return $errors;
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}
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/**
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* Get the teacher list.
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*
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* @param array $teachers
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*
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* @return array
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*/
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function getTeacherListInArray($teachers)
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{
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if (!empty($teachers)) {
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return explode('|', $teachers);
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}
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return [];
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}
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/**
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* Saves imported data.
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*
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* @param array $courses List of courses
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*/
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function save_courses_data($courses)
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{
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$msg = '';
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foreach ($courses as $course) {
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$course_language = $course['Language'];
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$teachers = getTeacherListInArray($course['Teacher']);
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$teacherList = [];
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$creatorId = api_get_user_id();
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if (!empty($teachers)) {
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foreach ($teachers as $teacher) {
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$teacherInfo = api_get_user_info_from_username($teacher);
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if (!empty($teacherInfo)) {
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$teacherList[] = $teacherInfo;
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}
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}
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}
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$params = [];
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$params['title'] = $course['Title'];
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$params['wanted_code'] = $course['Code'];
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$params['tutor_name'] = null;
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$params['course_category'] = $course['CourseCategory'];
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$params['course_language'] = $course_language;
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$params['user_id'] = $creatorId;
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$addMeAsTeacher = isset($_POST['add_me_as_teacher']) ? $_POST['add_me_as_teacher'] : false;
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$params['add_user_as_teacher'] = $addMeAsTeacher;
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if (isset($course['Visibility'])) {
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$params['visibility'] = $course['Visibility'];
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}
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// Check if there is a course template stated for this course. In that case, we check if that code exists in DB:
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if (array_key_exists('CourseTemplate', $course) && $course['CourseTemplate'] != '') {
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$result = Database::fetch_array(
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Database::query(
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"SELECT id as real_id FROM ".Database::get_main_table(TABLE_MAIN_COURSE)."
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WHERE code = '".Database::escape_string($course['CourseTemplate'])."'"
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),
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'ASSOC'
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);
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if (count($result) && array_key_exists('real_id', $result)) {
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$params['course_template'] = $result['real_id'];
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}
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}
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$courseInfo = CourseManager::create_course($params);
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if (!empty($courseInfo)) {
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if (!empty($teacherList)) {
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foreach ($teacherList as $teacher) {
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CourseManager::subscribeUser(
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$teacher['user_id'],
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$courseInfo['code'],
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COURSEMANAGER
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);
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}
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}
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$msg .= '<a href="'.api_get_path(WEB_COURSE_PATH).$courseInfo['directory'].'/">
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'.$courseInfo['title'].'</a> '.get_lang('Created').'<br />';
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}
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// Check if necessary to clone tools' first page from the original course to the imported course:
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if (array_key_exists('CloneHomepageTools', $course) && $course['CloneHomepageTools'] == 'true' && array_key_exists('course_template', $params)) {
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$results = Database::store_result(
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Database::query(
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"SELECT * FROM ".Database::get_course_table(TABLE_TOOL_LIST)."
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WHERE c_id = ".$params['course_template']
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),
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'ASSOC'
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);
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if (count($results)) {
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foreach ($results as $row) {
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Database::update(
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Database::get_course_table(TABLE_TOOL_LIST),
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['visibility' => $row['visibility']],
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['c_id = ? and name = ?' => [$courseInfo['real_id'], $row['name']]]
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);
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}
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}
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}
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}
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if (!empty($msg)) {
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echo Display::return_message($msg, 'normal', false);
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}
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}
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/**
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* Read the CSV-file.
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*
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* @param string $file Path to the CSV-file
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*
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* @return array All course-information read from the file
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*/
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function parse_csv_courses_data($file)
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{
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return Import::csv_reader($file);
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}
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$cidReset = true;
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require_once __DIR__.'/../inc/global.inc.php';
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$this_section = SECTION_PLATFORM_ADMIN;
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api_protect_admin_script();
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$defined_auth_sources[] = PLATFORM_AUTH_SOURCE;
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if (isset($extAuthSource) && is_array($extAuthSource)) {
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$defined_auth_sources = array_merge($defined_auth_sources, array_keys($extAuthSource));
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}
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$tool_name = get_lang('ImportCourses').' CSV';
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$interbreadcrumb[] = ['url' => 'index.php', 'name' => get_lang('PlatformAdmin')];
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set_time_limit(0);
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Display::display_header($tool_name);
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if (isset($_POST['formSent']) && $_POST['formSent']) {
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if (empty($_FILES['import_file']['tmp_name'])) {
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$error_message = get_lang('UplUploadFailed');
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echo Display::return_message($error_message, 'error', false);
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} else {
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$allowed_file_mimetype = ['csv'];
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$ext_import_file = substr($_FILES['import_file']['name'], (strrpos($_FILES['import_file']['name'], '.') + 1));
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if (!in_array($ext_import_file, $allowed_file_mimetype)) {
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echo Display::return_message(get_lang('YouMustImportAFileAccordingToSelectedOption'), 'error');
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} else {
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$courses = parse_csv_courses_data($_FILES['import_file']['tmp_name']);
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$errors = validate_courses_data($courses);
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if (count($errors) == 0) {
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save_courses_data($courses);
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}
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}
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}
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}
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if (isset($errors) && count($errors) != 0) {
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$error_message = '<ul>';
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foreach ($errors as $index => $error_course) {
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$error_message .= '<li>'.get_lang('Line').' '.$error_course['line'].': <strong>'.$error_course['error'].'</strong>: ';
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$error_message .= get_lang('Course').': '.$error_course['Title'].' ('.$error_course['Code'].')';
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$error_message .= '</li>';
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}
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$error_message .= '</ul>';
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echo Display::return_message($error_message, 'error', false);
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}
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$form = new FormValidator(
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'import',
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'post',
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api_get_self(),
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null,
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['enctype' => 'multipart/form-data']
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);
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$form->addHeader($tool_name);
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$form->addElement('file', 'import_file', get_lang('ImportCSVFileLocation'));
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$form->addElement('checkbox', 'add_me_as_teacher', null, get_lang('AddMeAsTeacherInCourses'));
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$form->addButtonImport(get_lang('Import'), 'save');
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$form->addElement('hidden', 'formSent', 1);
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$form->display();
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?>
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<div style="clear: both;"></div>
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<p><?php echo get_lang('CSVMustLookLike').' ('.get_lang('MandatoryFields').')'; ?> :</p>
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<blockquote>
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<pre>
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<strong>Code</strong>;<strong>Title</strong>;<strong>CourseCategory</strong>;<strong>CourseCategoryName</strong>;Teacher;Language;Visibility;CourseTemplate;CloneHomepageTools
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BIO0015;Biology;BIO;Science;teacher1;english;1;TEMPLATE1;true
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BIO0016;Maths;MATH;Engineerng;teacher2|teacher3;english;1;;
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BIO0017;Language;LANG;;;english;1;;
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</pre>
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</blockquote>
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<?php
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Display::display_footer();
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