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Developer Documentation

See Release Notes
Long Term Support Release

  • Bug fixes for general core bugs in 3.9.x will end* 10 May 2021 (12 months).
  • Bug fixes for security issues in 3.9.x will end* 8 May 2023 (36 months).
  • PHP version: minimum PHP 7.2.0 Note: minimum PHP version has increased since Moodle 3.8. PHP 7.3.x and 7.4.x are supported too.

Differences Between: [Versions 39 and 310] [Versions 39 and 311] [Versions 39 and 400] [Versions 39 and 401] [Versions 39 and 402] [Versions 39 and 403]

   1  <?php
   2  
   3  defined('MOODLE_INTERNAL') || die;
   4  
   5  require_once($CFG->libdir.'/formslib.php');
   6  require_once($CFG->libdir.'/completionlib.php');
   7  
   8  /**
   9   * The form for handling editing a course.
  10   */
  11  class course_edit_form extends moodleform {
  12      protected $course;
  13      protected $context;
  14  
  15      /**
  16       * Form definition.
  17       */
  18      function definition() {
  19          global $CFG, $PAGE;
  20  
  21          $mform    = $this->_form;
  22          $PAGE->requires->yui_module('moodle-course-formatchooser', 'M.course.init_formatchooser',
  23                  array(array('formid' => $mform->getAttribute('id'))));
  24  
  25          $course        = $this->_customdata['course']; // this contains the data of this form
  26          $category      = $this->_customdata['category'];
  27          $editoroptions = $this->_customdata['editoroptions'];
  28          $returnto = $this->_customdata['returnto'];
  29          $returnurl = $this->_customdata['returnurl'];
  30  
  31          $systemcontext   = context_system::instance();
  32          $categorycontext = context_coursecat::instance($category->id);
  33  
  34          if (!empty($course->id)) {
  35              $coursecontext = context_course::instance($course->id);
  36              $context = $coursecontext;
  37          } else {
  38              $coursecontext = null;
  39              $context = $categorycontext;
  40          }
  41  
  42          $courseconfig = get_config('moodlecourse');
  43  
  44          $this->course  = $course;
  45          $this->context = $context;
  46  
  47          // Form definition with new course defaults.
  48          $mform->addElement('header','general', get_string('general', 'form'));
  49  
  50          $mform->addElement('hidden', 'returnto', null);
  51          $mform->setType('returnto', PARAM_ALPHANUM);
  52          $mform->setConstant('returnto', $returnto);
  53  
  54          $mform->addElement('hidden', 'returnurl', null);
  55          $mform->setType('returnurl', PARAM_LOCALURL);
  56          $mform->setConstant('returnurl', $returnurl);
  57  
  58          $mform->addElement('text','fullname', get_string('fullnamecourse'),'maxlength="254" size="50"');
  59          $mform->addHelpButton('fullname', 'fullnamecourse');
  60          $mform->addRule('fullname', get_string('missingfullname'), 'required', null, 'client');
  61          $mform->setType('fullname', PARAM_TEXT);
  62          if (!empty($course->id) and !has_capability('moodle/course:changefullname', $coursecontext)) {
  63              $mform->hardFreeze('fullname');
  64              $mform->setConstant('fullname', $course->fullname);
  65          }
  66  
  67          $mform->addElement('text', 'shortname', get_string('shortnamecourse'), 'maxlength="100" size="20"');
  68          $mform->addHelpButton('shortname', 'shortnamecourse');
  69          $mform->addRule('shortname', get_string('missingshortname'), 'required', null, 'client');
  70          $mform->setType('shortname', PARAM_TEXT);
  71          if (!empty($course->id) and !has_capability('moodle/course:changeshortname', $coursecontext)) {
  72              $mform->hardFreeze('shortname');
  73              $mform->setConstant('shortname', $course->shortname);
  74          }
  75  
  76          // Verify permissions to change course category or keep current.
  77          if (empty($course->id)) {
  78              if (has_capability('moodle/course:create', $categorycontext)) {
  79                  $displaylist = core_course_category::make_categories_list('moodle/course:create');
  80                  $mform->addElement('select', 'category', get_string('coursecategory'), $displaylist);
  81                  $mform->addHelpButton('category', 'coursecategory');
  82                  $mform->setDefault('category', $category->id);
  83              } else {
  84                  $mform->addElement('hidden', 'category', null);
  85                  $mform->setType('category', PARAM_INT);
  86                  $mform->setConstant('category', $category->id);
  87              }
  88          } else {
  89              if (has_capability('moodle/course:changecategory', $coursecontext)) {
  90                  $displaylist = core_course_category::make_categories_list('moodle/course:changecategory');
  91                  if (!isset($displaylist[$course->category])) {
  92                      //always keep current
  93                      $displaylist[$course->category] = core_course_category::get($course->category, MUST_EXIST, true)
  94                          ->get_formatted_name();
  95                  }
  96                  $mform->addElement('select', 'category', get_string('coursecategory'), $displaylist);
  97                  $mform->addHelpButton('category', 'coursecategory');
  98              } else {
  99                  //keep current
 100                  $mform->addElement('hidden', 'category', null);
 101                  $mform->setType('category', PARAM_INT);
 102                  $mform->setConstant('category', $course->category);
 103              }
 104          }
 105  
 106          $choices = array();
 107          $choices['0'] = get_string('hide');
 108          $choices['1'] = get_string('show');
 109          $mform->addElement('select', 'visible', get_string('coursevisibility'), $choices);
 110          $mform->addHelpButton('visible', 'coursevisibility');
 111          $mform->setDefault('visible', $courseconfig->visible);
 112          if (!empty($course->id)) {
 113              if (!has_capability('moodle/course:visibility', $coursecontext)) {
 114                  $mform->hardFreeze('visible');
 115                  $mform->setConstant('visible', $course->visible);
 116              }
 117          } else {
 118              if (!guess_if_creator_will_have_course_capability('moodle/course:visibility', $categorycontext)) {
 119                  $mform->hardFreeze('visible');
 120                  $mform->setConstant('visible', $courseconfig->visible);
 121              }
 122          }
 123          $mform->addElement('date_time_selector', 'startdate', get_string('startdate'));
 124          $mform->addHelpButton('startdate', 'startdate');
 125          $date = (new DateTime())->setTimestamp(usergetmidnight(time()));
 126          $date->modify('+1 day');
 127          $mform->setDefault('startdate', $date->getTimestamp());
 128  
 129          $mform->addElement('date_time_selector', 'enddate', get_string('enddate'), array('optional' => true));
 130          $mform->addHelpButton('enddate', 'enddate');
 131  
 132          if (!empty($CFG->enablecourserelativedates)) {
 133              $attributes = [
 134                  'aria-describedby' => 'relativedatesmode_warning'
 135              ];
 136              if (!empty($course->id)) {
 137                  $attributes['disabled'] = true;
 138              }
 139              $relativeoptions = [
 140                  0 => get_string('no'),
 141                  1 => get_string('yes'),
 142              ];
 143              $relativedatesmodegroup = [];
 144              $relativedatesmodegroup[] = $mform->createElement('select', 'relativedatesmode', get_string('relativedatesmode'),
 145                  $relativeoptions, $attributes);
 146              $relativedatesmodegroup[] = $mform->createElement('html', html_writer::span(get_string('relativedatesmode_warning'),
 147                  '', ['id' => 'relativedatesmode_warning']));
 148              $mform->addGroup($relativedatesmodegroup, 'relativedatesmodegroup', get_string('relativedatesmode'), null, false);
 149              $mform->addHelpButton('relativedatesmodegroup', 'relativedatesmode');
 150          }
 151  
 152          $mform->addElement('text','idnumber', get_string('idnumbercourse'),'maxlength="100"  size="10"');
 153          $mform->addHelpButton('idnumber', 'idnumbercourse');
 154          $mform->setType('idnumber', PARAM_RAW);
 155          if (!empty($course->id) and !has_capability('moodle/course:changeidnumber', $coursecontext)) {
 156              $mform->hardFreeze('idnumber');
 157              $mform->setConstants('idnumber', $course->idnumber);
 158          }
 159  
 160          // Description.
 161          $mform->addElement('header', 'descriptionhdr', get_string('description'));
 162          $mform->setExpanded('descriptionhdr');
 163  
 164          $mform->addElement('editor','summary_editor', get_string('coursesummary'), null, $editoroptions);
 165          $mform->addHelpButton('summary_editor', 'coursesummary');
 166          $mform->setType('summary_editor', PARAM_RAW);
 167          $summaryfields = 'summary_editor';
 168  
 169          if ($overviewfilesoptions = course_overviewfiles_options($course)) {
 170              $mform->addElement('filemanager', 'overviewfiles_filemanager', get_string('courseoverviewfiles'), null, $overviewfilesoptions);
 171              $mform->addHelpButton('overviewfiles_filemanager', 'courseoverviewfiles');
 172              $summaryfields .= ',overviewfiles_filemanager';
 173          }
 174  
 175          if (!empty($course->id) and !has_capability('moodle/course:changesummary', $coursecontext)) {
 176              // Remove the description header it does not contain anything any more.
 177              $mform->removeElement('descriptionhdr');
 178              $mform->hardFreeze($summaryfields);
 179          }
 180  
 181          // Course format.
 182          $mform->addElement('header', 'courseformathdr', get_string('type_format', 'plugin'));
 183  
 184          $courseformats = get_sorted_course_formats(true);
 185          $formcourseformats = array();
 186          foreach ($courseformats as $courseformat) {
 187              $formcourseformats[$courseformat] = get_string('pluginname', "format_$courseformat");
 188          }
 189          if (isset($course->format)) {
 190              $course->format = course_get_format($course)->get_format(); // replace with default if not found
 191              if (!in_array($course->format, $courseformats)) {
 192                  // this format is disabled. Still display it in the dropdown
 193                  $formcourseformats[$course->format] = get_string('withdisablednote', 'moodle',
 194                          get_string('pluginname', 'format_'.$course->format));
 195              }
 196          }
 197  
 198          $mform->addElement('select', 'format', get_string('format'), $formcourseformats);
 199          $mform->addHelpButton('format', 'format');
 200          $mform->setDefault('format', $courseconfig->format);
 201  
 202          // Button to update format-specific options on format change (will be hidden by JavaScript).
 203          $mform->registerNoSubmitButton('updatecourseformat');
 204          $mform->addElement('submit', 'updatecourseformat', get_string('courseformatudpate'));
 205  
 206          // Just a placeholder for the course format options.
 207          $mform->addElement('hidden', 'addcourseformatoptionshere');
 208          $mform->setType('addcourseformatoptionshere', PARAM_BOOL);
 209  
 210          // Appearance.
 211          $mform->addElement('header', 'appearancehdr', get_string('appearance'));
 212  
 213          if (!empty($CFG->allowcoursethemes)) {
 214              $themeobjects = get_list_of_themes();
 215              $themes=array();
 216              $themes[''] = get_string('forceno');
 217              foreach ($themeobjects as $key=>$theme) {
 218                  if (empty($theme->hidefromselector)) {
 219                      $themes[$key] = get_string('pluginname', 'theme_'.$theme->name);
 220                  }
 221              }
 222              $mform->addElement('select', 'theme', get_string('forcetheme'), $themes);
 223          }
 224  
 225          $languages=array();
 226          $languages[''] = get_string('forceno');
 227          $languages += get_string_manager()->get_list_of_translations();
 228          if ((empty($course->id) && guess_if_creator_will_have_course_capability('moodle/course:setforcedlanguage', $categorycontext))
 229                  || (!empty($course->id) && has_capability('moodle/course:setforcedlanguage', $coursecontext))) {
 230              $mform->addElement('select', 'lang', get_string('forcelanguage'), $languages);
 231              $mform->setDefault('lang', $courseconfig->lang);
 232          }
 233  
 234          // Multi-Calendar Support - see MDL-18375.
 235          $calendartypes = \core_calendar\type_factory::get_list_of_calendar_types();
 236          // We do not want to show this option unless there is more than one calendar type to display.
 237          if (count($calendartypes) > 1) {
 238              $calendars = array();
 239              $calendars[''] = get_string('forceno');
 240              $calendars += $calendartypes;
 241              $mform->addElement('select', 'calendartype', get_string('forcecalendartype', 'calendar'), $calendars);
 242          }
 243  
 244          $options = range(0, 10);
 245          $mform->addElement('select', 'newsitems', get_string('newsitemsnumber'), $options);
 246          $courseconfig = get_config('moodlecourse');
 247          $mform->setDefault('newsitems', $courseconfig->newsitems);
 248          $mform->addHelpButton('newsitems', 'newsitemsnumber');
 249  
 250          $mform->addElement('selectyesno', 'showgrades', get_string('showgrades'));
 251          $mform->addHelpButton('showgrades', 'showgrades');
 252          $mform->setDefault('showgrades', $courseconfig->showgrades);
 253  
 254          $mform->addElement('selectyesno', 'showreports', get_string('showreports'));
 255          $mform->addHelpButton('showreports', 'showreports');
 256          $mform->setDefault('showreports', $courseconfig->showreports);
 257  
 258          // Files and uploads.
 259          $mform->addElement('header', 'filehdr', get_string('filesanduploads'));
 260  
 261          if (!empty($course->legacyfiles) or !empty($CFG->legacyfilesinnewcourses)) {
 262              if (empty($course->legacyfiles)) {
 263                  //0 or missing means no legacy files ever used in this course - new course or nobody turned on legacy files yet
 264                  $choices = array('0'=>get_string('no'), '2'=>get_string('yes'));
 265              } else {
 266                  $choices = array('1'=>get_string('no'), '2'=>get_string('yes'));
 267              }
 268              $mform->addElement('select', 'legacyfiles', get_string('courselegacyfiles'), $choices);
 269              $mform->addHelpButton('legacyfiles', 'courselegacyfiles');
 270              if (!isset($courseconfig->legacyfiles)) {
 271                  // in case this was not initialised properly due to switching of $CFG->legacyfilesinnewcourses
 272                  $courseconfig->legacyfiles = 0;
 273              }
 274              $mform->setDefault('legacyfiles', $courseconfig->legacyfiles);
 275          }
 276  
 277          // Handle non-existing $course->maxbytes on course creation.
 278          $coursemaxbytes = !isset($course->maxbytes) ? null : $course->maxbytes;
 279  
 280          // Let's prepare the maxbytes popup.
 281          $choices = get_max_upload_sizes($CFG->maxbytes, 0, 0, $coursemaxbytes);
 282          $mform->addElement('select', 'maxbytes', get_string('maximumupload'), $choices);
 283          $mform->addHelpButton('maxbytes', 'maximumupload');
 284          $mform->setDefault('maxbytes', $courseconfig->maxbytes);
 285  
 286          // Completion tracking.
 287          if (completion_info::is_enabled_for_site()) {
 288              $mform->addElement('header', 'completionhdr', get_string('completion', 'completion'));
 289              $mform->addElement('selectyesno', 'enablecompletion', get_string('enablecompletion', 'completion'));
 290              $mform->setDefault('enablecompletion', $courseconfig->enablecompletion);
 291              $mform->addHelpButton('enablecompletion', 'enablecompletion', 'completion');
 292          } else {
 293              $mform->addElement('hidden', 'enablecompletion');
 294              $mform->setType('enablecompletion', PARAM_INT);
 295              $mform->setDefault('enablecompletion', 0);
 296          }
 297  
 298          enrol_course_edit_form($mform, $course, $context);
 299  
 300          $mform->addElement('header','groups', get_string('groupsettingsheader', 'group'));
 301  
 302          $choices = array();
 303          $choices[NOGROUPS] = get_string('groupsnone', 'group');
 304          $choices[SEPARATEGROUPS] = get_string('groupsseparate', 'group');
 305          $choices[VISIBLEGROUPS] = get_string('groupsvisible', 'group');
 306          $mform->addElement('select', 'groupmode', get_string('groupmode', 'group'), $choices);
 307          $mform->addHelpButton('groupmode', 'groupmode', 'group');
 308          $mform->setDefault('groupmode', $courseconfig->groupmode);
 309  
 310          $mform->addElement('selectyesno', 'groupmodeforce', get_string('groupmodeforce', 'group'));
 311          $mform->addHelpButton('groupmodeforce', 'groupmodeforce', 'group');
 312          $mform->setDefault('groupmodeforce', $courseconfig->groupmodeforce);
 313  
 314          //default groupings selector
 315          $options = array();
 316          $options[0] = get_string('none');
 317          $mform->addElement('select', 'defaultgroupingid', get_string('defaultgrouping', 'group'), $options);
 318  
 319          if ((empty($course->id) && guess_if_creator_will_have_course_capability('moodle/course:renameroles', $categorycontext))
 320                  || (!empty($course->id) && has_capability('moodle/course:renameroles', $coursecontext))) {
 321              // Customizable role names in this course.
 322              $mform->addElement('header', 'rolerenaming', get_string('rolerenaming'));
 323              $mform->addHelpButton('rolerenaming', 'rolerenaming');
 324  
 325              if ($roles = get_all_roles()) {
 326                  $roles = role_fix_names($roles, null, ROLENAME_ORIGINAL);
 327                  $assignableroles = get_roles_for_contextlevels(CONTEXT_COURSE);
 328                  foreach ($roles as $role) {
 329                      $mform->addElement('text', 'role_' . $role->id, get_string('yourwordforx', '', $role->localname));
 330                      $mform->setType('role_' . $role->id, PARAM_TEXT);
 331                  }
 332              }
 333          }
 334  
 335          if (core_tag_tag::is_enabled('core', 'course') &&
 336                  ((empty($course->id) && guess_if_creator_will_have_course_capability('moodle/course:tag', $categorycontext))
 337                  || (!empty($course->id) && has_capability('moodle/course:tag', $coursecontext)))) {
 338              $mform->addElement('header', 'tagshdr', get_string('tags', 'tag'));
 339              $mform->addElement('tags', 'tags', get_string('tags'),
 340                      array('itemtype' => 'course', 'component' => 'core'));
 341          }
 342  
 343          // Add custom fields to the form.
 344          $handler = core_course\customfield\course_handler::create();
 345          $handler->set_parent_context($categorycontext); // For course handler only.
 346          $handler->instance_form_definition($mform, empty($course->id) ? 0 : $course->id);
 347  
 348          // When two elements we need a group.
 349          $buttonarray = array();
 350          $classarray = array('class' => 'form-submit');
 351          if ($returnto !== 0) {
 352              $buttonarray[] = &$mform->createElement('submit', 'saveandreturn', get_string('savechangesandreturn'), $classarray);
 353          }
 354          $buttonarray[] = &$mform->createElement('submit', 'saveanddisplay', get_string('savechangesanddisplay'), $classarray);
 355          $buttonarray[] = &$mform->createElement('cancel');
 356          $mform->addGroup($buttonarray, 'buttonar', '', array(' '), false);
 357          $mform->closeHeaderBefore('buttonar');
 358  
 359          $mform->addElement('hidden', 'id', null);
 360          $mform->setType('id', PARAM_INT);
 361  
 362          // Prepare custom fields data.
 363          $handler->instance_form_before_set_data($course);
 364          // Finally set the current form data
 365          $this->set_data($course);
 366      }
 367  
 368      /**
 369       * Fill in the current page data for this course.
 370       */
 371      function definition_after_data() {
 372          global $DB;
 373  
 374          $mform = $this->_form;
 375  
 376          // add available groupings
 377          $courseid = $mform->getElementValue('id');
 378          if ($courseid and $mform->elementExists('defaultgroupingid')) {
 379              $options = array();
 380              if ($groupings = $DB->get_records('groupings', array('courseid'=>$courseid))) {
 381                  foreach ($groupings as $grouping) {
 382                      $options[$grouping->id] = format_string($grouping->name);
 383                  }
 384              }
 385              core_collator::asort($options);
 386              $gr_el =& $mform->getElement('defaultgroupingid');
 387              $gr_el->load($options);
 388          }
 389  
 390          // add course format options
 391          $formatvalue = $mform->getElementValue('format');
 392          if (is_array($formatvalue) && !empty($formatvalue)) {
 393  
 394              $params = array('format' => $formatvalue[0]);
 395              // Load the course as well if it is available, course formats may need it to work out
 396              // they preferred course end date.
 397              if ($courseid) {
 398                  $params['id'] = $courseid;
 399              }
 400              $courseformat = course_get_format((object)$params);
 401  
 402              $elements = $courseformat->create_edit_form_elements($mform);
 403              for ($i = 0; $i < count($elements); $i++) {
 404                  $mform->insertElementBefore($mform->removeElement($elements[$i]->getName(), false),
 405                          'addcourseformatoptionshere');
 406              }
 407  
 408              // Remove newsitems element if format does not support news.
 409              if (!$courseformat->supports_news()) {
 410                  $mform->removeElement('newsitems');
 411              }
 412          }
 413  
 414          // Tweak the form with values provided by custom fields in use.
 415          $handler  = core_course\customfield\course_handler::create();
 416          $handler->instance_form_definition_after_data($mform, empty($courseid) ? 0 : $courseid);
 417      }
 418  
 419      /**
 420       * Validation.
 421       *
 422       * @param array $data
 423       * @param array $files
 424       * @return array the errors that were found
 425       */
 426      function validation($data, $files) {
 427          global $DB;
 428  
 429          $errors = parent::validation($data, $files);
 430  
 431          // Add field validation check for duplicate shortname.
 432          if ($course = $DB->get_record('course', array('shortname' => $data['shortname']), '*', IGNORE_MULTIPLE)) {
 433              if (empty($data['id']) || $course->id != $data['id']) {
 434                  $errors['shortname'] = get_string('shortnametaken', '', $course->fullname);
 435              }
 436          }
 437  
 438          // Add field validation check for duplicate idnumber.
 439          if (!empty($data['idnumber']) && (empty($data['id']) || $this->course->idnumber != $data['idnumber'])) {
 440              if ($course = $DB->get_record('course', array('idnumber' => $data['idnumber']), '*', IGNORE_MULTIPLE)) {
 441                  if (empty($data['id']) || $course->id != $data['id']) {
 442                      $errors['idnumber'] = get_string('courseidnumbertaken', 'error', $course->fullname);
 443                  }
 444              }
 445          }
 446  
 447          if ($errorcode = course_validate_dates($data)) {
 448              $errors['enddate'] = get_string($errorcode, 'error');
 449          }
 450  
 451          $errors = array_merge($errors, enrol_course_edit_validation($data, $this->context));
 452  
 453          $courseformat = course_get_format((object)array('format' => $data['format']));
 454          $formaterrors = $courseformat->edit_form_validation($data, $files, $errors);
 455          if (!empty($formaterrors) && is_array($formaterrors)) {
 456              $errors = array_merge($errors, $formaterrors);
 457          }
 458  
 459          // Add the custom fields validation.
 460          $handler = core_course\customfield\course_handler::create();
 461          $errors  = array_merge($errors, $handler->instance_form_validation($data, $files));
 462  
 463          return $errors;
 464      }
 465  }