course/edit_form.php

   1 <?php
   2
   3 use core\di;
   4 use core\hook;
   5
   6 defined('MOODLE_INTERNAL') || die;
   7
   8 require_once($CFG->libdir.'/formslib.php');
   9 require_once($CFG->libdir.'/completionlib.php');
  10 require_once($CFG->libdir . '/pdflib.php');
  11
  12 /**
  13  * The form for handling editing a course.
  14  */
  15 class course_edit_form extends moodleform {
  16     protected $course;
  17     protected $context;
  18
  19     /**
  20      * Form definition.
  21      */
  22     function definition() {
  23         global $CFG, $PAGE;
  24
  25         $mform    = $this->_form;
  26         $PAGE->requires->js_call_amd('core_course/formatchooser', 'init');
  27
  28         $course        = $this->_customdata['course']; // this contains the data of this form
  29         $category      = $this->_customdata['category'];
  30         $editoroptions = $this->_customdata['editoroptions'];
  31         $returnto = $this->_customdata['returnto'];
  32         $returnurl = $this->_customdata['returnurl'];
  33
  34         $systemcontext   = context_system::instance();
  35         $categorycontext = context_coursecat::instance($category->id);
  36
  37         if (!empty($course->id)) {
  38             $coursecontext = context_course::instance($course->id);
  39             $context = $coursecontext;
  40         } else {
  41             $coursecontext = null;
  42             $context = $categorycontext;
  43         }
  44
  45         $courseconfig = get_config('moodlecourse');
  46
  47         $this->course  = $course;
  48         $this->context = $context;
  49
  50         // Form definition with new course defaults.
  51         $mform->addElement('header','general', get_string('general', 'form'));
  52
  53         $mform->addElement('hidden', 'returnto', null);
  54         $mform->setType('returnto', PARAM_ALPHANUM);
  55         $mform->setConstant('returnto', $returnto);
  56
  57         $mform->addElement('hidden', 'returnurl', null);
  58         $mform->setType('returnurl', PARAM_LOCALURL);
  59         $mform->setConstant('returnurl', $returnurl);
  60
  61         $mform->addElement('text','fullname', get_string('fullnamecourse'),'maxlength="254" size="50"');
  62         $mform->addHelpButton('fullname', 'fullnamecourse');
  63         $mform->addRule('fullname', get_string('missingfullname'), 'required', null, 'client');
  64         $mform->setType('fullname', PARAM_TEXT);
  65         if (!empty($course->id) and !has_capability('moodle/course:changefullname', $coursecontext)) {
  66             $mform->hardFreeze('fullname');
  67             $mform->setConstant('fullname', $course->fullname);
  68         }
  69
  70         $mform->addElement('text', 'shortname', get_string('shortnamecourse'), 'maxlength="100" size="20"');
  71         $mform->addHelpButton('shortname', 'shortnamecourse');
  72         $mform->addRule('shortname', get_string('missingshortname'), 'required', null, 'client');
  73         $mform->setType('shortname', PARAM_TEXT);
  74         if (!empty($course->id) and !has_capability('moodle/course:changeshortname', $coursecontext)) {
  75             $mform->hardFreeze('shortname');
  76             $mform->setConstant('shortname', $course->shortname);
  77         }
  78
  79         // Verify permissions to change course category or keep current.
  80         if (empty($course->id)) {
  81             if (has_capability('moodle/course:create', $categorycontext)) {
  82                 $displaylist = core_course_category::make_categories_list('moodle/course:create');
  83                 $mform->addElement('autocomplete', 'category', get_string('coursecategory'), $displaylist);
  84                 $mform->addRule('category', null, 'required', null, 'client');
  85                 $mform->addHelpButton('category', 'coursecategory');
  86                 $mform->setDefault('category', $category->id);
  87             } else {
  88                 $mform->addElement('hidden', 'category', null);
  89                 $mform->setType('category', PARAM_INT);
  90                 $mform->setConstant('category', $category->id);
  91             }
  92         } else {
  93             if (has_capability('moodle/course:changecategory', $coursecontext)) {
  94                 $displaylist = core_course_category::make_categories_list('moodle/course:changecategory');
  95                 if (!isset($displaylist[$course->category])) {
  96                     //always keep current
  97                     $displaylist[$course->category] = core_course_category::get($course->category, MUST_EXIST, true)
  98                         ->get_formatted_name();
  99                 }
 100                 $mform->addElement('autocomplete', 'category', get_string('coursecategory'), $displaylist);
 101                 $mform->addRule('category', null, 'required', null, 'client');
 102                 $mform->addHelpButton('category', 'coursecategory');
 103             } else {
 104                 //keep current
 105                 $mform->addElement('hidden', 'category', null);
 106                 $mform->setType('category', PARAM_INT);
 107                 $mform->setConstant('category', $course->category);
 108             }
 109         }
 110
 111         $choices = array();
 112         $choices['0'] = get_string('hide');
 113         $choices['1'] = get_string('show');
 114         $mform->addElement('select', 'visible', get_string('coursevisibility'), $choices);
 115         $mform->addHelpButton('visible', 'coursevisibility');
 116         $mform->setDefault('visible', $courseconfig->visible);
 117         if (!empty($course->id)) {
 118             if (!has_capability('moodle/course:visibility', $coursecontext)) {
 119                 $mform->hardFreeze('visible');
 120                 $mform->setConstant('visible', $course->visible);
 121             }
 122         } else {
 123             if (!guess_if_creator_will_have_course_capability('moodle/course:visibility', $categorycontext)) {
 124                 $mform->hardFreeze('visible');
 125                 $mform->setConstant('visible', $courseconfig->visible);
 126             }
 127         }
 128
 129         // Download course content.
 130         if ($CFG->downloadcoursecontentallowed) {
 131             $downloadchoices = [
 132                 DOWNLOAD_COURSE_CONTENT_DISABLED => get_string('no'),
 133                 DOWNLOAD_COURSE_CONTENT_ENABLED => get_string('yes'),
 134             ];
 135             $sitedefaultstring = $downloadchoices[$courseconfig->downloadcontentsitedefault];
 136             $downloadchoices[DOWNLOAD_COURSE_CONTENT_SITE_DEFAULT] = get_string('sitedefaultspecified', '', $sitedefaultstring);
 137             $downloadselectdefault = $courseconfig->downloadcontent ?? DOWNLOAD_COURSE_CONTENT_SITE_DEFAULT;
 138
 139             $mform->addElement('select', 'downloadcontent', get_string('enabledownloadcoursecontent', 'course'), $downloadchoices);
 140             $mform->addHelpButton('downloadcontent', 'downloadcoursecontent', 'course');
 141             $mform->setDefault('downloadcontent', $downloadselectdefault);
 142
 143             if ((!empty($course->id) && !has_capability('moodle/course:configuredownloadcontent', $coursecontext)) ||
 144                     (empty($course->id) &&
 145                     !guess_if_creator_will_have_course_capability('moodle/course:configuredownloadcontent', $categorycontext))) {
 146                 $mform->hardFreeze('downloadcontent');
 147                 $mform->setConstant('downloadcontent', $downloadselectdefault);
 148             }
 149         }
 150
 151         // Get the task to change automatically the course visibility when the current day matches the course start date.
 152         $task = \core\task\manager::get_scheduled_task('\core\task\show_started_courses_task');
 153         $startdatestring = 'startdate';
 154         if (!empty($task) && !$task->get_disabled()) {
 155             // When the task is enabled, display a different help message.
 156             $startdatestring = 'startdatewithtaskenabled';
 157         }
 158         $mform->addElement('date_time_selector', 'startdate', get_string('startdate'));
 159         $mform->addHelpButton('startdate', $startdatestring);
 160         $date = (new DateTime())->setTimestamp(usergetmidnight(time()));
 161         $date->modify('+1 day');
 162         $mform->setDefault('startdate', $date->getTimestamp());
 163
 164         // Get the task to change automatically the course visibility when the current day matches the course end date.
 165         $task = \core\task\manager::get_scheduled_task('\core\task\hide_ended_courses_task');
 166         $enddatestring = 'enddate';
 167         if (!empty($task) && !$task->get_disabled()) {
 168             // When the task is enabled, display a different help message.
 169             $enddatestring = 'enddatewithtaskenabled';
 170         }
 171         $mform->addElement('date_time_selector', 'enddate', get_string('enddate'), array('optional' => true));
 172         $mform->addHelpButton('enddate', $enddatestring);
 173
 174         if (!empty($CFG->enablecourserelativedates)) {
 175             $attributes = [
 176                 'aria-describedby' => 'relativedatesmode_warning'
 177             ];
 178             if (!empty($course->id)) {
 179                 $attributes['disabled'] = true;
 180             }
 181             $relativeoptions = [
 182                 0 => get_string('no'),
 183                 1 => get_string('yes'),
 184             ];
 185             $relativedatesmodegroup = [];
 186             $relativedatesmodegroup[] = $mform->createElement('select', 'relativedatesmode', get_string('relativedatesmode'),
 187                 $relativeoptions, $attributes);
 188             $relativedatesmodegroup[] = $mform->createElement('html', html_writer::span(get_string('relativedatesmode_warning'),
 189                 '', ['id' => 'relativedatesmode_warning']));
 190             $mform->addGroup($relativedatesmodegroup, 'relativedatesmodegroup', get_string('relativedatesmode'), null, false);
 191             $mform->addHelpButton('relativedatesmodegroup', 'relativedatesmode');
 192         }
 193
 194         $mform->addElement('text','idnumber', get_string('idnumbercourse'),'maxlength="100"  size="10"');
 195         $mform->addHelpButton('idnumber', 'idnumbercourse');
 196         $mform->setType('idnumber', PARAM_RAW);
 197         if (!empty($course->id) and !has_capability('moodle/course:changeidnumber', $coursecontext)) {
 198             $mform->hardFreeze('idnumber');
 199             $mform->setConstants('idnumber', $course->idnumber);
 200         }
 201
 202         // Description.
 203         $mform->addElement('header', 'descriptionhdr', get_string('description'));
 204         $mform->setExpanded('descriptionhdr');
 205
 206         $mform->addElement('editor','summary_editor', get_string('coursesummary'), null, $editoroptions);
 207         $mform->addHelpButton('summary_editor', 'coursesummary');
 208         $mform->setType('summary_editor', PARAM_RAW);
 209         $summaryfields = 'summary_editor';
 210
 211         if ($overviewfilesoptions = course_overviewfiles_options($course)) {
 212             $mform->addElement('filemanager', 'overviewfiles_filemanager', get_string('courseoverviewfiles'), null, $overviewfilesoptions);
 213             $mform->addHelpButton('overviewfiles_filemanager', 'courseoverviewfiles');
 214             $summaryfields .= ',overviewfiles_filemanager';
 215         }
 216
 217         if (!empty($course->id) and !has_capability('moodle/course:changesummary', $coursecontext)) {
 218             // Remove the description header it does not contain anything any more.
 219             $mform->removeElement('descriptionhdr');
 220             $mform->hardFreeze($summaryfields);
 221         }
 222
 223         // Course format.
 224         $mform->addElement('header', 'courseformathdr', get_string('type_format', 'plugin'));
 225
 226         $courseformats = get_sorted_course_formats(true);
 227         $formcourseformats = new core\output\choicelist();
 228         $formcourseformats->set_allow_empty(false);
 229         foreach ($courseformats as $courseformat) {
 230             $definition = [];
 231             $component = "format_$courseformat";
 232             if (get_string_manager()->string_exists('plugin_description', $component)) {
 233                 $definition['description'] = get_string('plugin_description', $component);
 234             }
 235             $formcourseformats->add_option(
 236                 $courseformat,
 237                 get_string('pluginname', "format_$courseformat"),
 238                 [
 239                     'description' => $definition,
 240                 ],
 241             );
 242         }
 243         if (isset($course->format)) {
 244             $course->format = course_get_format($course)->get_format(); // Replace with default if not found.
 245             if (!in_array($course->format, $courseformats)) {
 246                 // This format is disabled. Still display it in the dropdown.
 247                 $formcourseformats->add_option(
 248                     $course->format,
 249                     get_string('withdisablednote', 'moodle', get_string('pluginname', 'format_'.$course->format)),
 250                 );
 251             }
 252         }
 253
 254         $mform->addElement(
 255             'choicedropdown',
 256             'format',
 257             get_string('format'),
 258             $formcourseformats,
 259             ['data-formatchooser-field' => 'selector'],
 260         );
 261         $mform->setDefault('format', $courseconfig->format);
 262
 263         // Button to update format-specific options on format change (will be hidden by JavaScript).
 264         $mform->registerNoSubmitButton('updatecourseformat');
 265         $mform->addElement('submit', 'updatecourseformat', get_string('courseformatudpate'), [
 266             'data-formatchooser-field' => 'updateButton',
 267             'class' => 'd-none',
 268         ]);
 269
 270         // Just a placeholder for the course format options.
 271         $mform->addElement('hidden', 'addcourseformatoptionshere');
 272         $mform->setType('addcourseformatoptionshere', PARAM_BOOL);
 273
 274         // Appearance.
 275         $mform->addElement('header', 'appearancehdr', get_string('appearance'));
 276
 277         if (!empty($CFG->allowcoursethemes)) {
 278             $themeobjects = get_list_of_themes();
 279             $themes=array();
 280             $themes[''] = get_string('forceno');
 281             foreach ($themeobjects as $key=>$theme) {
 282                 if (empty($theme->hidefromselector)) {
 283                     $themes[$key] = get_string('pluginname', 'theme_'.$theme->name);
 284                 }
 285             }
 286             $mform->addElement('select', 'theme', get_string('forcetheme'), $themes);
 287         }
 288
 289         if ((empty($course->id) && guess_if_creator_will_have_course_capability('moodle/course:setforcedlanguage', $categorycontext))
 290                 || (!empty($course->id) && has_capability('moodle/course:setforcedlanguage', $coursecontext))) {
 291
 292             $languages = ['' => get_string('forceno')];
 293             $languages += get_string_manager()->get_list_of_translations();
 294
 295             $mform->addElement('select', 'lang', get_string('forcelanguage'), $languages);
 296             $mform->setDefault('lang', $courseconfig->lang);
 297         }
 298
 299         // Multi-Calendar Support - see MDL-18375.
 300         $calendartypes = \core_calendar\type_factory::get_list_of_calendar_types();
 301         // We do not want to show this option unless there is more than one calendar type to display.
 302         if (count($calendartypes) > 1) {
 303             $calendars = array();
 304             $calendars[''] = get_string('forceno');
 305             $calendars += $calendartypes;
 306             $mform->addElement('select', 'calendartype', get_string('forcecalendartype', 'calendar'), $calendars);
 307         }
 308
 309         $options = range(0, 10);
 310         $mform->addElement('select', 'newsitems', get_string('newsitemsnumber'), $options);
 311         $courseconfig = get_config('moodlecourse');
 312         $mform->setDefault('newsitems', $courseconfig->newsitems);
 313         $mform->addHelpButton('newsitems', 'newsitemsnumber');
 314
 315         $mform->addElement('selectyesno', 'showgrades', get_string('showgrades'));
 316         $mform->addHelpButton('showgrades', 'showgrades');
 317         $mform->setDefault('showgrades', $courseconfig->showgrades);
 318
 319         $mform->addElement('selectyesno', 'showreports', get_string('showreports'));
 320         $mform->addHelpButton('showreports', 'showreports');
 321         $mform->setDefault('showreports', $courseconfig->showreports);
 322
 323         // Show activity dates.
 324         $mform->addElement('selectyesno', 'showactivitydates', get_string('showactivitydates'));
 325         $mform->addHelpButton('showactivitydates', 'showactivitydates');
 326         $mform->setDefault('showactivitydates', $courseconfig->showactivitydates);
 327
 328         // Files and uploads.
 329         $mform->addElement('header', 'filehdr', get_string('filesanduploads'));
 330
 331         if (!empty($course->legacyfiles) or !empty($CFG->legacyfilesinnewcourses)) {
 332             if (empty($course->legacyfiles)) {
 333                 //0 or missing means no legacy files ever used in this course - new course or nobody turned on legacy files yet
 334                 $choices = array('0'=>get_string('no'), '2'=>get_string('yes'));
 335             } else {
 336                 $choices = array('1'=>get_string('no'), '2'=>get_string('yes'));
 337             }
 338             $mform->addElement('select', 'legacyfiles', get_string('courselegacyfiles'), $choices);
 339             $mform->addHelpButton('legacyfiles', 'courselegacyfiles');
 340             if (!isset($courseconfig->legacyfiles)) {
 341                 // in case this was not initialised properly due to switching of $CFG->legacyfilesinnewcourses
 342                 $courseconfig->legacyfiles = 0;
 343             }
 344             $mform->setDefault('legacyfiles', $courseconfig->legacyfiles);
 345         }
 346
 347         // Handle non-existing $course->maxbytes on course creation.
 348         $coursemaxbytes = !isset($course->maxbytes) ? null : $course->maxbytes;
 349
 350         // Let's prepare the maxbytes popup.
 351         $choices = get_max_upload_sizes($CFG->maxbytes, 0, 0, $coursemaxbytes);
 352         $mform->addElement('select', 'maxbytes', get_string('maximumupload'), $choices);
 353         $mform->addHelpButton('maxbytes', 'maximumupload');
 354         $mform->setDefault('maxbytes', $courseconfig->maxbytes);
 355
 356         // PDF font.
 357         if (!empty($CFG->enablepdfexportfont)) {
 358             $pdf = new \pdf;
 359             $fontlist = $pdf->get_export_fontlist();
 360             // Show the option if the font is defined more than one.
 361             if (count($fontlist) > 1) {
 362                 $defaultfont = $courseconfig->pdfexportfont ?? 'freesans';
 363                 if (empty($fontlist[$defaultfont])) {
 364                     $defaultfont = current($fontlist);
 365                 }
 366                 $mform->addElement('select', 'pdfexportfont', get_string('pdfexportfont', 'course'), $fontlist);
 367                 $mform->addHelpButton('pdfexportfont', 'pdfexportfont', 'course');
 368                 $mform->setDefault('pdfexportfont', $defaultfont);
 369             }
 370         }
 371
 372         // Completion tracking.
 373         if (completion_info::is_enabled_for_site()) {
 374             $mform->addElement('header', 'completionhdr', get_string('completion', 'completion'));
 375             $mform->addElement('selectyesno', 'enablecompletion', get_string('enablecompletion', 'completion'));
 376             $mform->setDefault('enablecompletion', $courseconfig->enablecompletion);
 377             $mform->addHelpButton('enablecompletion', 'enablecompletion', 'completion');
 378
 379             $showcompletionconditions = $courseconfig->showcompletionconditions ?? COMPLETION_SHOW_CONDITIONS;
 380             $mform->addElement('selectyesno', 'showcompletionconditions', get_string('showcompletionconditions', 'completion'));
 381             $mform->addHelpButton('showcompletionconditions', 'showcompletionconditions', 'completion');
 382             $mform->setDefault('showcompletionconditions', $showcompletionconditions);
 383             $mform->hideIf('showcompletionconditions', 'enablecompletion', 'eq', COMPLETION_DISABLED);
 384         } else {
 385             $mform->addElement('hidden', 'enablecompletion');
 386             $mform->setType('enablecompletion', PARAM_INT);
 387             $mform->setDefault('enablecompletion', 0);
 388         }
 389
 390         enrol_course_edit_form($mform, $course, $context);
 391
 392         $mform->addElement('header','groups', get_string('groupsettingsheader', 'group'));
 393
 394         $choices = array();
 395         $choices[NOGROUPS] = get_string('groupsnone', 'group');
 396         $choices[SEPARATEGROUPS] = get_string('groupsseparate', 'group');
 397         $choices[VISIBLEGROUPS] = get_string('groupsvisible', 'group');
 398         $mform->addElement('select', 'groupmode', get_string('groupmode', 'group'), $choices);
 399         $mform->addHelpButton('groupmode', 'groupmode', 'group');
 400         $mform->setDefault('groupmode', $courseconfig->groupmode);
 401
 402         $mform->addElement('selectyesno', 'groupmodeforce', get_string('groupmodeforce', 'group'));
 403         $mform->addHelpButton('groupmodeforce', 'groupmodeforce', 'group');
 404         $mform->setDefault('groupmodeforce', $courseconfig->groupmodeforce);
 405
 406         //default groupings selector
 407         $options = array();
 408         $options[0] = get_string('none');
 409         $mform->addElement('select', 'defaultgroupingid', get_string('defaultgrouping', 'group'), $options);
 410
 411         if (core_tag_tag::is_enabled('core', 'course') &&
 412                 ((empty($course->id) && guess_if_creator_will_have_course_capability('moodle/course:tag', $categorycontext))
 413                 || (!empty($course->id) && has_capability('moodle/course:tag', $coursecontext)))) {
 414             $mform->addElement('header', 'tagshdr', get_string('tags', 'tag'));
 415             $mform->addElement('tags', 'tags', get_string('tags'),
 416                     array('itemtype' => 'course', 'component' => 'core'));
 417         }
 418
 419         // Add custom fields to the form.
 420         $handler = core_course\customfield\course_handler::create();
 421         $handler->set_parent_context($categorycontext); // For course handler only.
 422         $handler->instance_form_definition($mform, empty($course->id) ? 0 : $course->id);
 423
 424         $hook = new \core_course\hook\after_form_definition($this, $mform);
 425         di::get(hook\manager::class)->dispatch($hook);
 426
 427         // When two elements we need a group.
 428         $buttonarray = array();
 429         $classarray = array('class' => 'form-submit');
 430         if ($returnto !== 0) {
 431             $buttonarray[] = &$mform->createElement('submit', 'saveandreturn', get_string('savechangesandreturn'), $classarray);
 432         }
 433         $buttonarray[] = &$mform->createElement('submit', 'saveanddisplay', get_string('savechangesanddisplay'), $classarray);
 434         $buttonarray[] = &$mform->createElement('cancel');
 435         $mform->addGroup($buttonarray, 'buttonar', '', array(' '), false);
 436         $mform->closeHeaderBefore('buttonar');
 437
 438         $mform->addElement('hidden', 'id', null);
 439         $mform->setType('id', PARAM_INT);
 440
 441         // Communication api call to set the communication data in the form for handling actions for group feature changes.
 442         // We only need to set the data for courses already created.
 443         if (!empty($course->id)) {
 444             $communication = core_communication\helper::load_by_course(
 445                 courseid: $course->id,
 446                 context: $coursecontext,
 447             );
 448             $communication->set_data($course);
 449         }
 450
 451         // Prepare custom fields data.
 452         $handler->instance_form_before_set_data($course);
 453         // Finally set the current form data
 454         $this->set_data($course);
 455     }
 456
 457     /**
 458      * Fill in the current page data for this course.
 459      */
 460     function definition_after_data() {
 461         global $DB;
 462
 463         $mform = $this->_form;
 464
 465         // add available groupings
 466         $courseid = $mform->getElementValue('id');
 467         if ($courseid and $mform->elementExists('defaultgroupingid')) {
 468             $options = array();
 469             if ($groupings = $DB->get_records('groupings', array('courseid'=>$courseid))) {
 470                 foreach ($groupings as $grouping) {
 471                     $options[$grouping->id] = format_string($grouping->name);
 472                 }
 473             }
 474             core_collator::asort($options);
 475             $gr_el =& $mform->getElement('defaultgroupingid');
 476             $gr_el->load($options);
 477         }
 478
 479         // add course format options
 480         $formatvalue = $mform->getElementValue('format');
 481         if (is_array($formatvalue) && !empty($formatvalue)) {
 482
 483             $params = array('format' => $formatvalue[0]);
 484             // Load the course as well if it is available, course formats may need it to work out
 485             // they preferred course end date.
 486             if ($courseid) {
 487                 $params['id'] = $courseid;
 488             }
 489             $courseformat = course_get_format((object)$params);
 490
 491             $elements = $courseformat->create_edit_form_elements($mform);
 492             for ($i = 0; $i < count($elements); $i++) {
 493                 $mform->insertElementBefore($mform->removeElement($elements[$i]->getName(), false),
 494                         'addcourseformatoptionshere');
 495             }
 496
 497             // Remove newsitems element if format does not support news.
 498             if (!$courseformat->supports_news()) {
 499                 $mform->removeElement('newsitems');
 500             }
 501         }
 502
 503         // Tweak the form with values provided by custom fields in use.
 504         $handler  = core_course\customfield\course_handler::create();
 505         $handler->instance_form_definition_after_data($mform, empty($courseid) ? 0 : $courseid);
 506
 507         $hook = new \core_course\hook\after_form_definition_after_data($this, $mform);
 508         di::get(hook\manager::class)->dispatch($hook);
 509     }
 510
 511     /**
 512      * Validation.
 513      *
 514      * @param array $data
 515      * @param array $files
 516      * @return array the errors that were found
 517      */
 518     function validation($data, $files) {
 519         global $DB;
 520
 521         $errors = parent::validation($data, $files);
 522
 523         // Add field validation check for duplicate shortname.
 524         if ($course = $DB->get_record('course', array('shortname' => $data['shortname']), '*', IGNORE_MULTIPLE)) {
 525             if (empty($data['id']) || $course->id != $data['id']) {
 526                 $errors['shortname'] = get_string('shortnametaken', '', $course->fullname);
 527             }
 528         }
 529
 530         // Add field validation check for duplicate idnumber.
 531         if (!empty($data['idnumber']) && (empty($data['id']) || $this->course->idnumber != $data['idnumber'])) {
 532             if ($course = $DB->get_record('course', array('idnumber' => $data['idnumber']), '*', IGNORE_MULTIPLE)) {
 533                 if (empty($data['id']) || $course->id != $data['id']) {
 534                     $errors['idnumber'] = get_string('courseidnumbertaken', 'error', $course->fullname);
 535                 }
 536             }
 537         }
 538
 539         if ($errorcode = course_validate_dates($data)) {
 540             $errors['enddate'] = get_string($errorcode, 'error');
 541         }
 542
 543         $errors = array_merge($errors, enrol_course_edit_validation($data, $this->context));
 544
 545         $courseformat = course_get_format((object)array('format' => $data['format']));
 546         $formaterrors = $courseformat->edit_form_validation($data, $files, $errors);
 547         if (!empty($formaterrors) && is_array($formaterrors)) {
 548             $errors = array_merge($errors, $formaterrors);
 549         }
 550
 551         // Add the custom fields validation.
 552         $handler = core_course\customfield\course_handler::create();
 553         $errors  = array_merge($errors, $handler->instance_form_validation($data, $files));
 554
 555         $hook = new \core_course\hook\after_form_validation($this, $data, $files);
 556         di::get(hook\manager::class)->dispatch($hook);
 557         $pluginerrors = $hook->get_errors();
 558         if (!empty($pluginerrors)) {
 559             $errors = array_merge($errors, $pluginerrors);
 560         }
 561
 562         return $errors;
 563     }
 564
 565     /**
 566      * Returns course object.
 567      *
 568      * @return \stdClass
 569      */
 570     public function get_course(): stdClass {
 571         return $this->course;
 572     }
 573
 574     /**
 575      * Returns context.
 576      *
 577      * @return \core\context
 578      */
 579     public function get_context(): \core\context {
 580         return $this->context;
 581     }
 582 }