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- <?php // $Id: course_user_import.php 8216 2006-03-15 16:33:13Z turboke $
- /* For licensing terms, see /dokeos_license.txt */
- /**
- ==============================================================================
- * This tool allows platform admins to update course-user relations by uploading
- * a CSVfile
- * @package dokeos.admin
- ==============================================================================
- */
- /**
- * validate the imported data
- */
- function validate_data($users_courses)
- {
- $errors = array ();
- $coursecodes = array ();
- foreach ($users_courses as $index => $user_course)
- {
- $user_course['line'] = $index +1;
- //1. check if mandatory fields are set
- $mandatory_fields = array ('UserName', 'CourseCode', 'Status');
- foreach ($mandatory_fields as $key => $field)
- {
- if (!isset ($user_course[$field]) || strlen($user_course[$field]) == 0)
- {
- $user_course['error'] = get_lang($field.'Mandatory');
- $errors[] = $user_course;
- }
- }
- //2. check if coursecode exists
- if (isset ($user_course['CourseCode']) && strlen($user_course['CourseCode']) != 0)
- {
- //2.1 check if code allready used in this CVS-file
- if (!isset ($coursecodes[$user_course['CourseCode']]))
- {
- //2.1.1 check if code exists in DB
- $course_table = Database :: get_main_table(TABLE_MAIN_COURSE);
- $sql = "SELECT * FROM $course_table WHERE code = '".mysql_real_escape_string($user_course['CourseCode'])."'";
- $res = api_sql_query($sql, __FILE__, __LINE__);
- if (mysql_num_rows($res) == 0)
- {
- $user_course['error'] = get_lang('CodeDoesNotExists');
- $errors[] = $user_course;
- }
- else
- {
- $coursecodes[$user_course['CourseCode']] = 1;
- }
- }
- }
- //3. check if username exists
- if (isset ($user_course['UserName']) && strlen($user_course['UserName']) != 0)
- {
- if (UserManager :: is_username_available($user_course['UserName']))
- {
- $user_course['error'] = get_lang('UnknownUser');
- $errors[] = $user_course;
- }
- }
- //4. check if status is valid
- if (isset ($user_course['Status']) && strlen($user_course['Status']) != 0)
- {
- if ($user_course['Status'] != COURSEMANAGER && $user_course['Status'] != STUDENT)
- {
- $user_course['error'] = get_lang('UnknownStatus');
- $errors[] = $user_course;
- }
- }
- }
- return $errors;
- }
- /**
- * Save the imported data
- */
- function save_data($users_courses) {
- $user_table= Database::get_main_table(TABLE_MAIN_USER);
- $course_user_table= Database::get_main_table(TABLE_MAIN_COURSE_USER);
- $csv_data = array();
- foreach ($users_courses as $index => $user_course) {
- $csv_data[$user_course['UserName']][$user_course['CourseCode']] = $user_course['Status'];
- }
- foreach($csv_data as $username => $csv_subscriptions) {
- $user_id = 0;
- $sql = "SELECT * FROM $user_table u WHERE u.username = '".mysql_real_escape_string($username)."'";
- $res = api_sql_query($sql,__FILE__,__LINE__);
- $obj = mysql_fetch_object($res);
- $user_id = $obj->user_id;
- $sql = "SELECT * FROM $course_user_table cu WHERE cu.user_id = $user_id";
- $res = api_sql_query($sql,__FILE__,__LINE__);
- $db_subscriptions = array();
- while($obj = Database::fetch_object($res)) {
- $db_subscriptions[$obj->course_code] = $obj->status;
- }
- //echo '<b>User '.$username.'</b><br />';
- $to_subscribe = array_diff(array_keys($csv_subscriptions),array_keys($db_subscriptions));
- $to_unsubscribe = array_diff(array_keys($db_subscriptions),array_keys($csv_subscriptions));
- // echo '<pre>';
- // echo "CSV SUBSCRIPTION\n";
- // print_r($csv_subscriptions);
- // echo "DB SUBSCRIPTION\n";
- // print_r($db_subscriptions);
- // echo "TO SUBSCRIBE\n";
- // print_r($to_subscribe);
- // echo "TO UNSUBSCRIBE\n";
- // print_r($to_unsubscribe);
- // echo '</pre>';
- global $inserted_in_course;
- if (!isset($inserted_in_course)) { $inserted_in_course = array(); }
- if($_POST['subscribe']) {
- foreach($to_subscribe as $index => $course_code) {
- if(CourseManager :: course_exists($course_code)) {
- CourseManager::add_user_to_course($user_id,$course_code,$csv_subscriptions[$course_code]);
- $c_info = CourseManager::get_course_information($course_code);
- $inserted_in_course[$course_code] = $c_info['title'];
- }
- if (CourseManager :: course_exists($course_code,true)) {
- // also subscribe to virtual courses through check on visual code
- $list = CourseManager :: get_courses_info_from_visual_code($course_code);
- foreach ($list as $vcourse) {
- if ($vcourse['code'] == $course_code) {
- //ignore, this has already been inserted
- } else {
- CourseManager::add_user_to_course($user_id,$vcourse['code'],$csv_subscriptions[$course_code]);
- $inserted_in_course[$vcourse['code']] = $vcourse['title'];
- }
- }
- }
- //echo get_lang('Subscription').' : '.$course_code.'<br />';
- }
- }
- if($_POST['unsubscribe']) {
- foreach($to_unsubscribe as $index => $course_code) {
- if(CourseManager :: course_exists($course_code)) {
- CourseManager::unsubscribe_user($user_id,$course_code);
- $c_info = CourseManager::get_course_information($course_code);
- $inserted_in_course[$course_code] = $c_info['title'];
- }
- if (CourseManager :: course_exists($course_code,true)) {
- // also subscribe to virtual courses through check on visual code
- $list = CourseManager :: get_courses_info_from_visual_code($course_code);
- foreach ($list as $vcourse) {
- if ($vcourse['code'] == $course_code) {
- //ignore, this has already been inserted
- } else {
- CourseManager::unsubscribe_user($user_id,$vcourse['code']);
- $inserted_in_course[$vcourse['code']] = $vcourse['title'];
- }
- }
- }
- //echo get_lang('Unsubscription').' : '.$course_code.'<br />';
- }
- }
- }
- }
- /**
- * Read the CSV-file
- * @param string $file Path to the CSV-file
- * @return array All course-information read from the file
- */
- function parse_csv_data($file) {
- $courses = Import :: csv_to_array($file);
- return $courses;
- }
- // name of the language file that needs to be included
- $language_file = array ('admin', 'registration');
- $cidReset = true;
- // including the global Dokeos file
- include ('../inc/global.inc.php');
- // protecting the admin section
- api_protect_admin_script();
- // including additional libraries
- require_once (api_get_path(LIBRARY_PATH).'fileManage.lib.php');
- require_once (api_get_path(LIBRARY_PATH).'import.lib.php');
- require_once (api_get_path(LIBRARY_PATH).'usermanager.lib.php');
- require_once (api_get_path(LIBRARY_PATH).'course.lib.php');
- require_once (api_get_path(LIBRARY_PATH).'formvalidator/FormValidator.class.php');
- $formSent = 0;
- $errorMsg = '';
- $tool_name = get_lang('AddUsersToACourse').' CSV';
- $interbreadcrumb[] = array ('url' => 'index.php', 'name' => get_lang('PlatformAdmin'));
- set_time_limit(0);
- // creating the form
- $form = new FormValidator('course_user_import');
- $form->addElement('header', '', $tool_name);
- $form->addElement('file','import_file', get_lang('ImportFileLocation'));
- $form->addElement('checkbox','subscribe',get_lang('Action'),get_lang('SubscribeUserIfNotAllreadySubscribed'));
- $form->addElement('checkbox','unsubscribe','',get_lang('UnsubscribeUserIfSubscriptionIsNotInFile'));
- $form->addElement('style_submit_button', 'submit',get_lang('Import'),'class="save"');
- if ($form->validate()) {
- $users_courses = parse_csv_data($_FILES['import_file']['tmp_name']);
- $errors = validate_data($users_courses);
- if (count($errors) == 0) {
- $inserted_in_course = array();
- save_data($users_courses);
- // Build the alert message in case there were visual codes subscribed to
- if ($_POST['subscribe']) {
- $warn = get_lang('UsersSubscribedToBecauseVisualCode').': ';
- } else {
- $warn = get_lang('UsersUnsubscribedFromBecauseVisualCode').': ';
- }
-
- if (count($inserted_in_course) > 1) {
- // The users have been inserted in more than one course
- foreach ($inserted_in_course as $code => $info) {
- $warn .= ' '.$info.' ('.$code.'),';
- }
- $warn = substr($warn,0,-1);
- }
- Security::clear_token();
- $tok = Security::get_token();
- header('Location: user_list.php?action=show_message&message='.urlencode(get_lang('FileImported')).'&warn='.urlencode($warn).'&sec_token='.$tok);
- exit ();
- }
- }
- // displaying the header
- Display :: display_header($tool_name);
- // displaying the tool title
- // api_display_tool_title($tool_name);
- if (count($errors) != 0) {
- $error_message = '<ul>';
- foreach ($errors as $index => $error_course) {
- $error_message .= '<li>'.get_lang('Line').' '.$error_course['line'].': <b>'.$error_course['error'].'</b>: ';
- $error_message .= $error_course['Code'].' '.$error_course['Title'];
- $error_message .= '</li>';
- }
- $error_message .= '</ul>';
- Display :: display_error_message($error_message);
- }
- // displaying the form
- $form->display();
- ?>
- <p><?php echo get_lang('CSVMustLookLike').' ('.get_lang('MandatoryFields').')'; ?> :</p>
- <blockquote>
- <pre>
- <b>UserName</b>;<b>CourseCode</b>;<b>Status</b>
- jdoe;course01;<?php echo COURSEMANAGER; ?>
- a.dam;course01;<?php echo STUDENT; ?>
- </pre>
- <?php
- echo COURSEMANAGER.': '.get_lang('Teacher').'<br />';
- echo STUDENT.': '.get_lang('Student').'<br />';
- ?>
- </blockquote>
- <?php
- // footer
- Display :: display_footer();
- ?>
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