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<?php
/**
* Course_StudyAreasController
*
* This program 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 2 of
* the License, or (at your option) any later version.
*
*
* @author Marcus Lunzenauer <mlunzena@uos.de>
* @author David Siegfried <david.siegfried@uni-vechta.de>
* @category Stud.IP
* @since 3.2
*/
class Course_StudyAreasController extends AuthenticatedController
{
public function before_filter(&$action, &$args)
{
parent::before_filter($action, $args);
// Search for course object
$this->course = Course::findCurrent();
$this->locked = LockRules::Check($this->course->id, 'sem_tree');
// check course object and perms
if (isset($this->course) && !$GLOBALS['perm']->have_studip_perm('tutor', $this->course->id)) {
$this->set_status(403);
return false;
}
// Init Studyareas-Step for
$lv_groups_enabled = CourseWizardStepRegistry::findOneBySQL("
`classname` = 'StudyAreasLVGroupsCombinedWizardStep'
AND `enabled` = 1");
if ($lv_groups_enabled) {
$this->step = new StudyAreasLVGroupsCombinedWizardStep();
} else {
$this->step = new StudyAreasWizardStep();
}
$this->values = [];
$this->values[get_class($this->step)]['studyareas'] = $this->get_area_ids($this->course->id);
$this->values[get_class($this->step)]['ajax_url'] = $this->url_for('course/study_areas/ajax');
$this->values[get_class($this->step)]['no_js_url'] = $this->url_for('course/study_areas/show');
PageLayout::setTitle($this->course->getFullName() . ' - ' . _('Studienbereiche'));
}
public function show_action()
{
Navigation::activateItem('course/admin/study_areas');
$this->url_params = [];
if (Request::get('from')) {
$this->url_params['from'] = Request::get('from');
}
if (Request::get('open_node')) {
$this->url_params['open_node'] = Request::get('open_node');
}
if ($this->course) {
if ($GLOBALS['perm']->have_studip_perm('admin', $this->course->id)) {
$widget = new CourseManagementSelectWidget();
Sidebar::Get()->addWidget($widget);
}
}
if (Request::get('open_node')) {
$this->values[get_class($this->step)]['open_node'] = Request::get('open_node');
}
$this->is_activated = $this->is_activated();
$this->is_required = $this->is_required();
$this->values[get_class($this->step)]['locked'] = $this->locked;
$this->tree = $this->step->getStepTemplate($this->values, 0, 0);
}
public function ajax_action()
{
$parameter = Request::getArray('parameter');
$method = Request::get('method');
switch ($method) {
case 'searchSemTree':
$json = $this->step->searchSemTree($parameter[0]);
break;
case 'getSemTreeLevel':
$json = $this->step->getSemTreeLevel($parameter[0]);
break;
default:
$json = $this->step->getAncestorTree($parameter[0]);
break;
}
$this->render_json($json);
}
public function save_action()
{
if($this->locked) {
throw new Trails\Exception(403);
}
$params = [];
if (Request::get('open_node')) {
$params['open_node'] = Request::get('open_node');
}
if (Request::get('from')) {
$url = $this->url_for(Request::get('from'));
} else {
$url = $this->url_for('course/study_areas/show/' . $this->course->id);
}
if (Request::submittedSome('assign', 'unassign')) {
if (Request::submitted('assign')) {
$msg = $this->assign();
}
if (Request::submitted('unassign')) {
$msg = $this->unassign();
}
} else {
$studyareas = Request::getArray('studyareas');
if (empty($studyareas) && $this->is_required()) {
PageLayout::postError(_('Sie müssen mindestens einen Studienbereich auswählen'));
$this->redirect($url);
return;
}
if (!empty($studyareas) && !$this->is_activated()) {
PageLayout::postError(_('Sie dürfen keine Studienbereiche zuweisen.'));
$this->redirect($url);
return;
}
try {
$this->course->setStudyAreas($studyareas);
} catch (UnexpectedValueException $e) {
PageLayout::postError($e->getMessage());
}
}
if (empty($msg)) {
PageLayout::postSuccess(_('Die Studienbereichszuordnung wurde übernommen.'));
} else {
PageLayout::postError($msg);
}
if (Request::isDialog()) {
$this->response->add_header('X-Dialog-Close', 1);
$this->response->add_header('X-Dialog-Execute', 'STUDIP.AdminCourses.App.loadCourse');
$this->render_text($this->course->id);
} else {
$this->redirect($url);
}
}
public function unassign()
{
$msg = null;
$assigned = $this->course->study_areas->pluck('sem_tree_id');
foreach (array_keys(Request::getArray('unassign')) as $remove) {
if (false !== ($pos = array_search($remove, $assigned))) {
unset($assigned[$pos]);
}
}
if (empty($assigned) && $this->is_required()) {
return _('Sie müssen mindestens einen Studienbereich auswählen');
}
$this->course->setStudyAreas($assigned);
return $msg;
}
public function assign()
{
$msg = null;
$assigned = array_keys(Request::getArray('assign'));
if ($this->course->study_areas) {
$assigned = array_unique(array_merge($assigned, $this->course->study_areas->pluck('sem_tree_id')));
}
$this->course->setStudyAreas($assigned);
return $msg;
}
public function get_area_ids($course_id)
{
$selection = StudipStudyArea::getStudyAreasForCourse($course_id);
return array_keys($selection->toGroupedArray('sem_tree_id'));
}
/**
* Check whether the assignmenet of study areas is required.
*
* @return boolean True if required.
*/
private function is_required()
{
$sem_class = $this->course->getSemClass();
if (get_class($this->step) === 'StudyAreasLVGroupsCombinedWizardStep') {
if ($sem_class['module']) {
$lv_gruppen = Lvgruppe::findBySeminar($this->course->id);
if (count($lv_gruppen)) {
return false;
}
}
}
return (bool) $sem_class['bereiche'];
}
private function is_activated()
{
$sem_class = $this->course->getSemClass();
return (bool) $sem_class['bereiche'];
}
}
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