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223 lines
8.1 KiB
223 lines
8.1 KiB
<?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 update course-user relations by uploading
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* a CSV file
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* @package chamilo.admin
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*/
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/**
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* Validates the imported data.
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*/
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function validate_data($users_courses)
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{
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$errors = array();
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$coursecodes = array();
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foreach ($users_courses as $index => $user_course) {
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$user_course['line'] = $index + 1;
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// 1. Check whether mandatory fields are set.
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$mandatory_fields = array('UserName', 'CourseCode', 'Status');
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foreach ($mandatory_fields as $key => $field) {
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if (!isset($user_course[$field]) || strlen($user_course[$field]) == 0) {
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$user_course['error'] = get_lang($field.'Mandatory');
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$errors[] = $user_course;
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}
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}
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// 2. Check whether coursecode exists.
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if (isset ($user_course['CourseCode']) && strlen($user_course['CourseCode']) != 0) {
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// 2.1 Check whethher code has been allready used by this CVS-file.
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if (!isset($coursecodes[$user_course['CourseCode']])) {
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// 2.1.1 Check whether course with this code exists in the system.
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$course_table = Database :: get_main_table(TABLE_MAIN_COURSE);
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$sql = "SELECT * FROM $course_table
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WHERE code = '".Database::escape_string($user_course['CourseCode'])."'";
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$res = Database::query($sql);
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if (Database::num_rows($res) == 0) {
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$user_course['error'] = get_lang('CodeDoesNotExists');
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$errors[] = $user_course;
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} else {
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$coursecodes[$user_course['CourseCode']] = 1;
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}
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}
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}
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// 3. Check whether username exists.
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if (isset ($user_course['UserName']) && strlen($user_course['UserName']) != 0) {
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if (UserManager::is_username_available($user_course['UserName'])) {
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$user_course['error'] = get_lang('UnknownUser');
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$errors[] = $user_course;
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}
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}
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// 4. Check whether status is valid.
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if (isset ($user_course['Status']) && strlen($user_course['Status']) != 0) {
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if ($user_course['Status'] != COURSEMANAGER && $user_course['Status'] != STUDENT) {
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$user_course['error'] = get_lang('UnknownStatus');
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$errors[] = $user_course;
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}
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}
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}
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return $errors;
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}
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/**
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* Saves imported data.
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*/
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function save_data($users_courses)
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{
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$user_table = Database::get_main_table(TABLE_MAIN_USER);
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$course_user_table = Database::get_main_table(TABLE_MAIN_COURSE_USER);
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$csv_data = array();
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$inserted_in_course = array();
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foreach ($users_courses as $user_course) {
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$csv_data[$user_course['UserName']][$user_course['CourseCode']] = $user_course['Status'];
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}
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foreach ($csv_data as $username => $csv_subscriptions) {
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$sql = "SELECT * FROM $user_table u
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WHERE u.username = '".Database::escape_string($username)."'";
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$res = Database::query($sql);
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$obj = Database::fetch_object($res);
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$user_id = $obj->user_id;
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$sql = "SELECT * FROM $course_user_table cu
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WHERE cu.user_id = $user_id AND cu.relation_type <> ".COURSE_RELATION_TYPE_RRHH." ";
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$res = Database::query($sql);
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$db_subscriptions = array();
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while ($obj = Database::fetch_object($res)) {
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$db_subscriptions[$obj->course_code] = $obj->status;
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}
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$to_subscribe = array_diff(array_keys($csv_subscriptions), array_keys($db_subscriptions));
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$to_unsubscribe = array_diff(array_keys($db_subscriptions), array_keys($csv_subscriptions));
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if ($_POST['subscribe']) {
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foreach ($to_subscribe as $course_code) {
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if (CourseManager :: course_exists($course_code)) {
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CourseManager::subscribe_user(
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$user_id,
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$course_code,
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$csv_subscriptions[$course_code]
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);
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$course_info = CourseManager::get_course_information($course_code);
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$inserted_in_course[$course_code] = $course_info['title'];
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$inserted_in_course[$course_info['code']] = $course_info['title'];
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}
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}
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}
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if ($_POST['unsubscribe']) {
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foreach ($to_unsubscribe as $course_code) {
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if (CourseManager :: course_exists($course_code)) {
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CourseManager::unsubscribe_user($user_id, $course_code);
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$course_info = CourseManager::get_course_information($course_code);
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CourseManager::unsubscribe_user($user_id, $course_code);
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$inserted_in_course[$course_info['code']] = $course_info['title'];
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}
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}
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}
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}
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return $inserted_in_course;
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}
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/**
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* Reads CSV-file.
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* @param string $file Path to the CSV-file
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* @return array All course-information read from the file
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*/
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function parse_csv_data($file)
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{
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$courses = Import :: csv_to_array($file);
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return $courses;
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}
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$cidReset = true;
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include '../inc/global.inc.php';
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// Setting the section (for the tabs).
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$this_section = SECTION_PLATFORM_ADMIN;
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// Protecting the admin section.
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api_protect_admin_script();
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$tool_name = get_lang('AddUsersToACourse').' CSV';
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$interbreadcrumb[] = array('url' => 'index.php', 'name' => get_lang('PlatformAdmin'));
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set_time_limit(0);
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// Creating the form.
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$form = new FormValidator('course_user_import');
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$form->addElement('header', '', $tool_name);
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$form->addElement('file', 'import_file', get_lang('ImportFileLocation'));
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$form->addElement('checkbox', 'subscribe', get_lang('Action'), get_lang('SubscribeUserIfNotAllreadySubscribed'));
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$form->addElement('checkbox', 'unsubscribe', '', get_lang('UnsubscribeUserIfSubscriptionIsNotInFile'));
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$form->addButtonImport(get_lang('Import'));
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$form->setDefaults(array('subscribe' => '1', 'unsubscribe' => 1));
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$errors = array();
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if ($form->validate()) {
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$users_courses = parse_csv_data($_FILES['import_file']['tmp_name']);
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$errors = validate_data($users_courses);
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if (count($errors) == 0) {
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$inserted_in_course = save_data($users_courses);
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// Build the alert message in case there were visual codes subscribed to.
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if ($_POST['subscribe']) {
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$warn = get_lang('UsersSubscribedToBecauseVisualCode').': ';
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} else {
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$warn = get_lang('UsersUnsubscribedFromBecauseVisualCode').': ';
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}
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if (!empty($inserted_in_course)) {
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$warn = $warn.' '.get_lang('FileImported');
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// The users have been inserted in more than one course.
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foreach ($inserted_in_course as $code => $info) {
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$warn .= ' '.$info.' ('.$code.') ';
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}
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} else {
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$warn = get_lang('ErrorsWhenImportingFile');
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}
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Security::clear_token();
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$tok = Security::get_token();
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header('Location: user_list.php?action=show_message&warn='.urlencode($warn).'&sec_token='.$tok);
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exit();
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}
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}
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// Displaying the header.
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Display :: display_header($tool_name);
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if (count($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 .= $error_course['Code'].' '.$error_course['Title'];
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$error_message .= '</li>';
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}
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$error_message .= '</ul>';
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Display :: display_error_message($error_message, false);
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}
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// Displaying the form.
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$form->display();
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?>
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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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<b>UserName</b>;<b>CourseCode</b>;<b>Status</b>
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jdoe;course01;<?php echo COURSEMANAGER; ?>
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adam;course01;<?php echo STUDENT; ?>
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</pre>
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<?php
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echo COURSEMANAGER.': '.get_lang('Teacher').'<br />';
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echo STUDENT.': '.get_lang('Student').'<br />';
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?>
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</blockquote>
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<?php
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Display :: display_footer();
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