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See Release Notes

  • Bug fixes for general core bugs in 4.3.x will end 7 October 2024 (12 months).
  • Bug fixes for security issues in 4.3.x will end 21 April 2025 (18 months).
  • PHP version: minimum PHP 8.0.0 Note: minimum PHP version has increased since Moodle 4.1. PHP 8.2.x is supported too.

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

   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  defined('MOODLE_INTERNAL') || die;
  18  
  19  require_once($CFG->libdir.'/formslib.php');
  20  require_once($CFG->libdir.'/gradelib.php');
  21  require_once($CFG->libdir.'/plagiarismlib.php');
  22  
  23  use core_grades\component_gradeitems;
  24  
  25  /**
  26   * This class adds extra methods to form wrapper specific to be used for module add / update forms
  27   * mod/{modname}/mod_form.php replaced deprecated mod/{modname}/mod.html Moodleform.
  28   *
  29   * @package   core_course
  30   * @copyright Andrew Nicols <andrew@nicols.co.uk>
  31   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  32   */
  33  abstract class moodleform_mod extends moodleform {
  34  
  35      use \core_completion\form\form_trait;
  36  
  37      /** Current data */
  38      protected $current;
  39      /**
  40       * Instance of the module that is being updated. This is the id of the {prefix}{modulename}
  41       * record. Can be used in form definition. Will be "" if this is an 'add' form and not an
  42       * update one.
  43       *
  44       * @var mixed
  45       */
  46      protected $_instance;
  47      /**
  48       * Section of course that module instance will be put in or is in.
  49       * This is always the section number itself (column 'section' from 'course_sections' table).
  50       *
  51       * @var int
  52       */
  53      protected $_section;
  54      /**
  55       * Course module record of the module that is being updated. Will be null if this is an 'add' form and not an
  56       * update one.
  57        *
  58       * @var mixed
  59       */
  60      protected $_cm;
  61  
  62      /**
  63       * Current course.
  64       *
  65       * @var mixed
  66       */
  67      protected $_course;
  68  
  69      /**
  70       * List of modform features
  71       */
  72      protected $_features;
  73      /**
  74       * @var array Custom completion-rule elements, if enabled
  75       */
  76      protected $_customcompletionelements;
  77      /**
  78       * @var string name of module.
  79       */
  80      protected $_modname;
  81      /** current context, course or module depends if already exists*/
  82      protected $context;
  83  
  84      /** a flag indicating whether outcomes are being used*/
  85      protected $_outcomesused;
  86  
  87      /**
  88       * @var bool A flag used to indicate that this module should lock settings
  89       *           based on admin settings flags in definition_after_data.
  90       */
  91      protected $applyadminlockedflags = false;
  92  
  93      /** @var object The course format of the current course. */
  94      protected $courseformat;
  95  
  96      /** @var string Whether this is graded or rated. */
  97      private $gradedorrated = null;
  98  
  99      public function __construct($current, $section, $cm, $course) {
 100          global $CFG;
 101  
 102          $this->current   = $current;
 103          $this->_instance = $current->instance;
 104          $this->_section  = $section;
 105          $this->_cm       = $cm;
 106          $this->_course   = $course;
 107          if ($this->_cm) {
 108              $this->context = context_module::instance($this->_cm->id);
 109          } else {
 110              $this->context = context_course::instance($course->id);
 111          }
 112  
 113          // Set the course format.
 114          require_once($CFG->dirroot . '/course/format/lib.php');
 115          $this->courseformat = course_get_format($course);
 116  
 117          // Guess module name if not set.
 118          if (is_null($this->_modname)) {
 119              $matches = array();
 120              if (!preg_match('/^mod_([^_]+)_mod_form$/', get_class($this), $matches)) {
 121                  debugging('Rename form to mod_xx_mod_form, where xx is name of your module');
 122                  throw new \moodle_exception('unknownmodulename');
 123              }
 124              $this->_modname = $matches[1];
 125          }
 126          $this->init_features();
 127          parent::__construct('modedit.php');
 128      }
 129  
 130      /**
 131       * Old syntax of class constructor. Deprecated in PHP7.
 132       *
 133       * @deprecated since Moodle 3.1
 134       */
 135      public function moodleform_mod($current, $section, $cm, $course) {
 136          debugging('Use of class name as constructor is deprecated', DEBUG_DEVELOPER);
 137          self::__construct($current, $section, $cm, $course);
 138      }
 139  
 140      /**
 141       * Get the current data for the form.
 142       * @return stdClass|null
 143       */
 144      public function get_current() {
 145          return $this->current;
 146      }
 147  
 148      /**
 149       * Get the DB record for the current instance.
 150       * @return stdClass|null
 151       */
 152      public function get_instance() {
 153          return $this->_instance;
 154      }
 155  
 156      /**
 157       * Get the course section number (relative).
 158       * @return int
 159       */
 160      public function get_section() {
 161          return $this->_section;
 162      }
 163  
 164      /**
 165       * Get the course id.
 166       * @return int
 167       */
 168      public function get_course() {
 169          return $this->_course;
 170      }
 171  
 172      /**
 173       * Get the course module object.
 174       * @return stdClass|null
 175       */
 176      public function get_coursemodule() {
 177          return $this->_cm;
 178      }
 179  
 180      /**
 181       * Return the course context for new modules, or the module context for existing modules.
 182       * @return context
 183       */
 184      public function get_context() {
 185          return $this->context;
 186      }
 187  
 188      /**
 189       * Return the features this module supports.
 190       * @return stdClass
 191       */
 192      public function get_features() {
 193          return $this->_features;
 194      }
 195  
 196      protected function init_features() {
 197          global $CFG;
 198  
 199          $this->_features = new stdClass();
 200          $this->_features->groups            = plugin_supports('mod', $this->_modname, FEATURE_GROUPS, false);
 201          $this->_features->groupings         = plugin_supports('mod', $this->_modname, FEATURE_GROUPINGS, false);
 202          $this->_features->outcomes          = (!empty($CFG->enableoutcomes) and plugin_supports('mod', $this->_modname, FEATURE_GRADE_OUTCOMES, true));
 203          $this->_features->hasgrades         = plugin_supports('mod', $this->_modname, FEATURE_GRADE_HAS_GRADE, false);
 204          $this->_features->idnumber          = plugin_supports('mod', $this->_modname, FEATURE_IDNUMBER, true);
 205          $this->_features->introeditor       = plugin_supports('mod', $this->_modname, FEATURE_MOD_INTRO, true);
 206          $this->_features->defaultcompletion = plugin_supports('mod', $this->_modname, FEATURE_MODEDIT_DEFAULT_COMPLETION, true);
 207          $this->_features->rating            = plugin_supports('mod', $this->_modname, FEATURE_RATE, false);
 208          $this->_features->showdescription   = plugin_supports('mod', $this->_modname, FEATURE_SHOW_DESCRIPTION, false);
 209          $this->_features->gradecat          = ($this->_features->outcomes or $this->_features->hasgrades);
 210          $this->_features->advancedgrading   = plugin_supports('mod', $this->_modname, FEATURE_ADVANCED_GRADING, false);
 211          $this->_features->hasnoview         = plugin_supports('mod', $this->_modname, FEATURE_NO_VIEW_LINK, false);
 212          $this->_features->canrescale = (component_callback_exists('mod_' . $this->_modname, 'rescale_activity_grades') !== false);
 213      }
 214  
 215      /**
 216       * Allows module to modify data returned by get_moduleinfo_data() or prepare_new_moduleinfo_data() before calling set_data()
 217       * This method is also called in the bulk activity completion form.
 218       *
 219       * Only available on moodleform_mod.
 220       *
 221       * @param array $default_values passed by reference
 222       */
 223      function data_preprocessing(&$default_values){
 224          if (empty($default_values['scale'])) {
 225              $default_values['assessed'] = 0;
 226          }
 227  
 228          if (empty($default_values['assessed'])){
 229              $default_values['ratingtime'] = 0;
 230          } else {
 231              $default_values['ratingtime']=
 232                  ($default_values['assesstimestart'] && $default_values['assesstimefinish']) ? 1 : 0;
 233          }
 234  
 235          // Amend completion settings.
 236          if (isset($default_values['completiongradeitemnumber']) &&
 237              !is_null($default_values['completiongradeitemnumber'])) {
 238              $default_values['receiveagrade'] = 1;
 239          }
 240      }
 241  
 242      /**
 243       * Each module which defines definition_after_data() must call this method using parent::definition_after_data();
 244       */
 245      function definition_after_data() {
 246          global $CFG, $COURSE;
 247          $mform =& $this->_form;
 248  
 249          if ($id = $mform->getElementValue('update')) {
 250              $modulename = $mform->getElementValue('modulename');
 251              $instance   = $mform->getElementValue('instance');
 252              $component = "mod_{$modulename}";
 253  
 254              if ($this->_features->gradecat) {
 255                  $hasgradeitems = false;
 256                  $items = grade_item::fetch_all([
 257                      'itemtype' => 'mod',
 258                      'itemmodule' => $modulename,
 259                      'iteminstance' => $instance,
 260                      'courseid' => $COURSE->id,
 261                  ]);
 262  
 263                  $gradecategories = [];
 264                  $removecategories = [];
 265                  //will be no items if, for example, this activity supports ratings but rating aggregate type == no ratings
 266                  if (!empty($items)) {
 267                      foreach ($items as $item) {
 268                          if (!empty($item->outcomeid)) {
 269                              $elname = 'outcome_'.$item->outcomeid;
 270                              if ($mform->elementExists($elname)) {
 271                                  $mform->hardFreeze($elname); // prevent removing of existing outcomes
 272                              }
 273                          } else {
 274                              $hasgradeitems = true;
 275                          }
 276                      }
 277  
 278                      foreach ($items as $item) {
 279                          $gradecatfieldname = component_gradeitems::get_field_name_for_itemnumber(
 280                              $component,
 281                              $item->itemnumber,
 282                              'gradecat'
 283                          );
 284  
 285                          if (!isset($gradecategories[$gradecatfieldname])) {
 286                              $gradecategories[$gradecatfieldname] = $item->categoryid;
 287                          } else if ($gradecategories[$gradecatfieldname] != $item->categoryid) {
 288                              $removecategories[$gradecatfieldname] = true;
 289                          }
 290                      }
 291                  }
 292  
 293                  foreach ($removecategories as $toremove) {
 294                      if ($mform->elementExists($toremove)) {
 295                          $mform->removeElement($toremove);
 296                      }
 297                  }
 298              }
 299          }
 300  
 301          if ($COURSE->groupmodeforce) {
 302              if ($mform->elementExists('groupmode')) {
 303                  // The groupmode can not be changed if forced from course settings.
 304                  $mform->hardFreeze('groupmode');
 305              }
 306          }
 307  
 308          // Don't disable/remove groupingid if it is currently set to something, otherwise you cannot turn it off at same
 309          // time as turning off other option (MDL-30764).
 310          if (empty($this->_cm) || !$this->_cm->groupingid) {
 311              if ($mform->elementExists('groupmode') && empty($COURSE->groupmodeforce)) {
 312                  $mform->hideIf('groupingid', 'groupmode', 'eq', NOGROUPS);
 313  
 314              } else if (!$mform->elementExists('groupmode')) {
 315                  // Groupings have no use without groupmode.
 316                  if ($mform->elementExists('groupingid')) {
 317                      $mform->removeElement('groupingid');
 318                  }
 319                  // Nor does the group restrictions button.
 320                  if ($mform->elementExists('restrictgroupbutton')) {
 321                      $mform->removeElement('restrictgroupbutton');
 322                  }
 323              }
 324          }
 325  
 326          // Completion: If necessary, freeze fields.
 327          $cm = null;
 328          if ($this->_cm) {
 329              $cm = get_fast_modinfo($COURSE)->get_cm($this->_cm->id);
 330          }
 331          $this->definition_after_data_completion($cm);
 332  
 333          // Freeze admin defaults if required (and not different from default)
 334          $this->apply_admin_locked_flags();
 335  
 336          $this->plugin_extend_coursemodule_definition_after_data();
 337      }
 338  
 339      // form verification
 340      function validation($data, $files) {
 341          global $COURSE, $DB, $CFG;
 342  
 343          $mform =& $this->_form;
 344  
 345          $errors = parent::validation($data, $files);
 346  
 347          if ($mform->elementExists('name')) {
 348              $name = trim($data['name']);
 349              if ($name == '') {
 350                  $errors['name'] = get_string('required');
 351              }
 352          }
 353  
 354          $grade_item = grade_item::fetch(array('itemtype'=>'mod', 'itemmodule'=>$data['modulename'],
 355                       'iteminstance'=>$data['instance'], 'itemnumber'=>0, 'courseid'=>$COURSE->id));
 356          if ($data['coursemodule']) {
 357              $cm = $DB->get_record('course_modules', array('id'=>$data['coursemodule']));
 358          } else {
 359              $cm = null;
 360          }
 361  
 362          if ($mform->elementExists('cmidnumber')) {
 363              // verify the idnumber
 364              if (!grade_verify_idnumber($data['cmidnumber'], $COURSE->id, $grade_item, $cm)) {
 365                  $errors['cmidnumber'] = get_string('idnumbertaken');
 366              }
 367          }
 368  
 369          $component = "mod_{$this->_modname}";
 370          $itemnames = component_gradeitems::get_itemname_mapping_for_component($component);
 371          foreach ($itemnames as $itemnumber => $itemname) {
 372              $gradefieldname = component_gradeitems::get_field_name_for_itemnumber($component, $itemnumber, 'grade');
 373              $gradepassfieldname = component_gradeitems::get_field_name_for_itemnumber($component, $itemnumber, 'gradepass');
 374              $assessedfieldname = component_gradeitems::get_field_name_for_itemnumber($component, $itemnumber, 'assessed');
 375              $scalefieldname = component_gradeitems::get_field_name_for_itemnumber($component, $itemnumber, 'scale');
 376  
 377              // Ratings: Don't let them select an aggregate type without selecting a scale.
 378              // If the user has selected to use ratings but has not chosen a scale or set max points then the form is
 379              // invalid. If ratings have been selected then the user must select either a scale or max points.
 380              // This matches (horrible) logic in data_preprocessing.
 381              if (isset($data[$assessedfieldname]) && $data[$assessedfieldname] > 0 && empty($data[$scalefieldname])) {
 382                  $errors[$assessedfieldname] = get_string('scaleselectionrequired', 'rating');
 383              }
 384  
 385              // Check that the grade pass is a valid number.
 386              $gradepassvalid = false;
 387              if (isset($data[$gradepassfieldname])) {
 388                  if (unformat_float($data[$gradepassfieldname], true) === false) {
 389                      $errors[$gradepassfieldname] = get_string('err_numeric', 'form');
 390                  } else {
 391                      $gradepassvalid = true;
 392                  }
 393              }
 394  
 395              // Grade to pass: ensure that the grade to pass is valid for points and scales.
 396              // If we are working with a scale, convert into a positive number for validation.
 397              if ($gradepassvalid && isset($data[$gradepassfieldname]) && (!empty($data[$gradefieldname]) || !empty($data[$scalefieldname]))) {
 398                  $scale = !empty($data[$gradefieldname]) ? $data[$gradefieldname] : $data[$scalefieldname];
 399                  if ($scale < 0) {
 400                      $scalevalues = $DB->get_record('scale', array('id' => -$scale));
 401                      $grade = count(explode(',', $scalevalues->scale));
 402                  } else {
 403                      $grade = $scale;
 404                  }
 405                  if (unformat_float($data[$gradepassfieldname]) > $grade) {
 406                      $errors[$gradepassfieldname] = get_string('gradepassgreaterthangrade', 'grades', $grade);
 407                  }
 408              }
 409  
 410              // We have a grade if there is a non-falsey value for:
 411              // - the assessedfieldname for Ratings there; or
 412              // - the gradefieldname for Ratings there.
 413              if (empty($data[$assessedfieldname]) && empty($data[$gradefieldname])) {
 414                  // There are no grades set therefore completion is not allowed.
 415                  if (isset($data['completiongradeitemnumber']) && $data['completiongradeitemnumber'] == (string) $itemnumber) {
 416                      $errors['completiongradeitemnumber'] = get_string(
 417                          'badcompletiongradeitemnumber',
 418                          'completion',
 419                          get_string("grade_{$itemname}_name", $component)
 420                      );
 421                  }
 422              }
 423  
 424              if (isset($data['completionpassgrade']) && $data['completionpassgrade']) {
 425                  // We need to check whether there's a valid gradepass value.
 426                  // This can either be in completiongradeitemnumber when there are multiple options OR,
 427                  // The first grade item if completionusegrade is specified.
 428                  $validategradepass = false;
 429                  if (isset($data['completiongradeitemnumber'])) {
 430                      if ($data['completiongradeitemnumber'] == (string)$itemnumber) {
 431                          $validategradepass = true;
 432                      }
 433                  } else if (isset($data['completionusegrade']) && $data['completionusegrade']) {
 434                      $validategradepass = true;
 435                  }
 436  
 437                  // We need to make all the validations related with $gradepassfieldname
 438                  // with them being correct floats, keeping the originals unmodified for
 439                  // later validations / showing the form back...
 440                  // TODO: Note that once MDL-73994 is fixed we'll have to re-visit this and
 441                  // adapt the code below to the new values arriving here, without forgetting
 442                  // the special case of empties and nulls.
 443                  $gradepass = isset($data[$gradepassfieldname]) ? unformat_float($data[$gradepassfieldname]) : null;
 444  
 445                  // Confirm gradepass is a valid non-empty (null or zero) value.
 446                  if ($validategradepass && (is_null($gradepass) || $gradepass == 0)) {
 447                      $errors['completionpassgrade'] = get_string(
 448                          'activitygradetopassnotset',
 449                          'completion'
 450                      );
 451                  }
 452              }
 453          }
 454  
 455          // Completion: Check completion fields don't have errors.
 456          $errors = array_merge($errors, $this->validate_completion($data));
 457  
 458          // Availability: Check availability field does not have errors.
 459          if (!empty($CFG->enableavailability)) {
 460              \core_availability\frontend::report_validation_errors($data, $errors);
 461          }
 462  
 463          $pluginerrors = $this->plugin_extend_coursemodule_validation($data);
 464          if (!empty($pluginerrors)) {
 465              $errors = array_merge($errors, $pluginerrors);
 466          }
 467  
 468          return $errors;
 469      }
 470  
 471      /**
 472       * Extend the validation function from any other plugin.
 473       *
 474       * @param stdClass $data The form data.
 475       * @return array $errors The list of errors keyed by element name.
 476       */
 477      protected function plugin_extend_coursemodule_validation($data) {
 478          $errors = array();
 479  
 480          $callbacks = get_plugins_with_function('coursemodule_validation', 'lib.php');
 481          foreach ($callbacks as $type => $plugins) {
 482              foreach ($plugins as $plugin => $pluginfunction) {
 483                  // We have exposed all the important properties with public getters - the errors array should be pass by reference.
 484                  $pluginerrors = $pluginfunction($this, $data);
 485                  if (!empty($pluginerrors)) {
 486                      $errors = array_merge($errors, $pluginerrors);
 487                  }
 488              }
 489          }
 490          return $errors;
 491      }
 492  
 493      /**
 494       * Load in existing data as form defaults. Usually new entry defaults are stored directly in
 495       * form definition (new entry form); this function is used to load in data where values
 496       * already exist and data is being edited (edit entry form).
 497       *
 498       * @param mixed $default_values object or array of default values
 499       */
 500      function set_data($default_values) {
 501          if (is_object($default_values)) {
 502              $default_values = (array)$default_values;
 503          }
 504  
 505          $this->data_preprocessing($default_values);
 506          parent::set_data($default_values);
 507      }
 508  
 509      /**
 510       * Adds all the standard elements to a form to edit the settings for an activity module.
 511       */
 512      protected function standard_coursemodule_elements() {
 513          global $COURSE, $CFG, $DB, $OUTPUT;
 514          $mform =& $this->_form;
 515  
 516          $this->_outcomesused = false;
 517          if ($this->_features->outcomes) {
 518              if ($outcomes = grade_outcome::fetch_all_available($COURSE->id)) {
 519                  $this->_outcomesused = true;
 520                  $mform->addElement('header', 'modoutcomes', get_string('outcomes', 'grades'));
 521                  foreach($outcomes as $outcome) {
 522                      $mform->addElement('advcheckbox', 'outcome_'.$outcome->id, $outcome->get_name());
 523                  }
 524              }
 525          }
 526  
 527          if ($this->_features->rating) {
 528              $this->add_rating_settings($mform, 0);
 529          }
 530  
 531          $mform->addElement('header', 'modstandardelshdr', get_string('modstandardels', 'form'));
 532  
 533          $section = get_fast_modinfo($COURSE)->get_section_info($this->_section);
 534          $allowstealth =
 535              !empty($CFG->allowstealth) &&
 536              $this->courseformat->allow_stealth_module_visibility($this->_cm, $section) &&
 537              !$this->_features->hasnoview;
 538          if ($allowstealth && $section->visible) {
 539              $modvisiblelabel = 'modvisiblewithstealth';
 540          } else if ($section->visible) {
 541              $modvisiblelabel = 'modvisible';
 542          } else {
 543              $modvisiblelabel = 'modvisiblehiddensection';
 544          }
 545          $mform->addElement('modvisible', 'visible', get_string($modvisiblelabel), null,
 546                  array('allowstealth' => $allowstealth, 'sectionvisible' => $section->visible, 'cm' => $this->_cm));
 547          $mform->addHelpButton('visible', $modvisiblelabel);
 548          if (!empty($this->_cm) && !has_capability('moodle/course:activityvisibility', $this->get_context())) {
 549              $mform->hardFreeze('visible');
 550          }
 551  
 552          if ($this->_features->idnumber) {
 553              $mform->addElement('text', 'cmidnumber', get_string('idnumbermod'));
 554              $mform->setType('cmidnumber', PARAM_RAW);
 555              $mform->addHelpButton('cmidnumber', 'idnumbermod');
 556          }
 557  
 558          if (has_capability('moodle/course:setforcedlanguage', $this->get_context())) {
 559              $languages = ['' => get_string('forceno')];
 560              $languages += get_string_manager()->get_list_of_translations();
 561  
 562              $mform->addElement('select', 'lang', get_string('forcelanguage'), $languages);
 563          }
 564  
 565          if ($CFG->downloadcoursecontentallowed) {
 566                  $choices = [
 567                      DOWNLOAD_COURSE_CONTENT_DISABLED => get_string('no'),
 568                      DOWNLOAD_COURSE_CONTENT_ENABLED => get_string('yes'),
 569                  ];
 570                  $mform->addElement('select', 'downloadcontent', get_string('downloadcontent', 'course'), $choices);
 571                  $downloadcontentdefault = $this->_cm->downloadcontent ?? DOWNLOAD_COURSE_CONTENT_ENABLED;
 572                  $mform->addHelpButton('downloadcontent', 'downloadcontent', 'course');
 573                  if (has_capability('moodle/course:configuredownloadcontent', $this->get_context())) {
 574                      $mform->setDefault('downloadcontent', $downloadcontentdefault);
 575                  } else {
 576                      $mform->hardFreeze('downloadcontent');
 577                      $mform->setConstant('downloadcontent', $downloadcontentdefault);
 578                  }
 579          }
 580  
 581          if ($this->_features->groups) {
 582              $options = array(NOGROUPS       => get_string('groupsnone'),
 583                               SEPARATEGROUPS => get_string('groupsseparate'),
 584                               VISIBLEGROUPS  => get_string('groupsvisible'));
 585              $mform->addElement('select', 'groupmode', get_string('groupmode', 'group'), $options, NOGROUPS);
 586              $mform->addHelpButton('groupmode', 'groupmode', 'group');
 587          }
 588  
 589          if ($this->_features->groupings) {
 590              // Groupings selector - used to select grouping for groups in activity.
 591              $options = array();
 592              if ($groupings = $DB->get_records('groupings', array('courseid'=>$COURSE->id))) {
 593                  foreach ($groupings as $grouping) {
 594                      $options[$grouping->id] = format_string($grouping->name);
 595                  }
 596              }
 597              core_collator::asort($options);
 598              $options = array(0 => get_string('none')) + $options;
 599              $mform->addElement('select', 'groupingid', get_string('grouping', 'group'), $options);
 600              $mform->addHelpButton('groupingid', 'grouping', 'group');
 601          }
 602  
 603          if (!empty($CFG->enableavailability)) {
 604              // Add special button to end of previous section if groups/groupings
 605              // are enabled.
 606  
 607              $availabilityplugins = \core\plugininfo\availability::get_enabled_plugins();
 608              $groupavailability = $this->_features->groups && array_key_exists('group', $availabilityplugins);
 609              $groupingavailability = $this->_features->groupings && array_key_exists('grouping', $availabilityplugins);
 610  
 611              if ($groupavailability || $groupingavailability) {
 612                  // When creating the button, we need to set type=button to prevent it behaving as a submit.
 613                  $mform->addElement('static', 'restrictgroupbutton', '',
 614                      html_writer::tag('button', get_string('restrictbygroup', 'availability'), [
 615                          'id' => 'restrictbygroup',
 616                          'type' => 'button',
 617                          'disabled' => 'disabled',
 618                          'class' => 'btn btn-secondary',
 619                          'data-groupavailability' => $groupavailability,
 620                          'data-groupingavailability' => $groupingavailability
 621                      ])
 622                  );
 623              }
 624  
 625              // Availability field. This is just a textarea; the user interface
 626              // interaction is all implemented in JavaScript.
 627              $mform->addElement('header', 'availabilityconditionsheader',
 628                      get_string('restrictaccess', 'availability'));
 629              // Note: This field cannot be named 'availability' because that
 630              // conflicts with fields in existing modules (such as assign).
 631              // So it uses a long name that will not conflict.
 632              $mform->addElement('textarea', 'availabilityconditionsjson',
 633                      get_string('accessrestrictions', 'availability'),
 634                      ['class' => 'd-none']
 635              );
 636              // Availability loading indicator.
 637              $loadingcontainer = $OUTPUT->container(
 638                  $OUTPUT->render_from_template('core/loading', []),
 639                  'd-flex justify-content-center py-5 icon-size-5',
 640                  'availabilityconditions-loading'
 641              );
 642              $mform->addElement('html', $loadingcontainer);
 643  
 644              // The _cm variable may not be a proper cm_info, so get one from modinfo.
 645              if ($this->_cm) {
 646                  $modinfo = get_fast_modinfo($COURSE);
 647                  $cm = $modinfo->get_cm($this->_cm->id);
 648              } else {
 649                  $cm = null;
 650              }
 651              \core_availability\frontend::include_all_javascript($COURSE, $cm);
 652          }
 653  
 654          // Conditional activities: completion tracking section
 655          if(!isset($completion)) {
 656              $completion = new completion_info($COURSE);
 657          }
 658  
 659          // Add the completion tracking elements to the form.
 660          if ($completion->is_enabled()) {
 661              $mform->addElement('header', 'activitycompletionheader', get_string('activitycompletion', 'completion'));
 662              $this->add_completion_elements(null, false, false, false, $this->_course->id);
 663          }
 664  
 665          // Populate module tags.
 666          if (core_tag_tag::is_enabled('core', 'course_modules')) {
 667              $mform->addElement('header', 'tagshdr', get_string('tags', 'tag'));
 668              $mform->addElement('tags', 'tags', get_string('tags'), array('itemtype' => 'course_modules', 'component' => 'core'));
 669              if ($this->_cm) {
 670                  $tags = core_tag_tag::get_item_tags_array('core', 'course_modules', $this->_cm->id);
 671                  $mform->setDefault('tags', $tags);
 672              }
 673          }
 674  
 675          $this->standard_hidden_coursemodule_elements();
 676  
 677          $this->plugin_extend_coursemodule_standard_elements();
 678      }
 679  
 680      /**
 681       * Add rating settings.
 682       *
 683       * @param moodleform_mod $mform
 684       * @param int $itemnumber
 685       */
 686      protected function add_rating_settings($mform, int $itemnumber) {
 687          global $CFG, $COURSE;
 688  
 689          if ($this->gradedorrated && $this->gradedorrated !== 'rated') {
 690              return;
 691          }
 692          $this->gradedorrated = 'rated';
 693  
 694          require_once("{$CFG->dirroot}/rating/lib.php");
 695          $rm = new rating_manager();
 696  
 697          $component = "mod_{$this->_modname}";
 698          $gradecatfieldname = component_gradeitems::get_field_name_for_itemnumber($component, $itemnumber, 'gradecat');
 699          $gradepassfieldname = component_gradeitems::get_field_name_for_itemnumber($component, $itemnumber, 'gradepass');
 700          $assessedfieldname = component_gradeitems::get_field_name_for_itemnumber($component, $itemnumber, 'assessed');
 701          $scalefieldname = component_gradeitems::get_field_name_for_itemnumber($component, $itemnumber, 'scale');
 702  
 703          $mform->addElement('header', 'modstandardratings', get_string('ratings', 'rating'));
 704  
 705          $isupdate = !empty($this->_cm);
 706  
 707          $rolenamestring = null;
 708          if ($isupdate) {
 709              $capabilities = ['moodle/rating:rate', "mod/{$this->_cm->modname}:rate"];
 710              $rolenames = get_role_names_with_caps_in_context($this->get_context(), $capabilities);
 711              $rolenamestring = implode(', ', $rolenames);
 712          } else {
 713              $rolenamestring = get_string('capabilitychecknotavailable', 'rating');
 714          }
 715  
 716          $mform->addElement('static', 'rolewarning', get_string('rolewarning', 'rating'), $rolenamestring);
 717          $mform->addHelpButton('rolewarning', 'rolewarning', 'rating');
 718  
 719          $mform->addElement('select', $assessedfieldname, get_string('aggregatetype', 'rating') , $rm->get_aggregate_types());
 720          $mform->setDefault($assessedfieldname, 0);
 721          $mform->addHelpButton($assessedfieldname, 'aggregatetype', 'rating');
 722  
 723          $gradeoptions = [
 724              'isupdate' => $isupdate,
 725              'currentgrade' => false,
 726              'hasgrades' => false,
 727              'canrescale' => false,
 728              'useratings' => true,
 729          ];
 730          if ($isupdate) {
 731              $gradeitem = grade_item::fetch([
 732                  'itemtype' => 'mod',
 733                  'itemmodule' => $this->_cm->modname,
 734                  'iteminstance' => $this->_cm->instance,
 735                  'itemnumber' => $itemnumber,
 736                  'courseid' => $COURSE->id,
 737              ]);
 738              if ($gradeitem) {
 739                  $gradeoptions['currentgrade'] = $gradeitem->grademax;
 740                  $gradeoptions['currentgradetype'] = $gradeitem->gradetype;
 741                  $gradeoptions['currentscaleid'] = $gradeitem->scaleid;
 742                  $gradeoptions['hasgrades'] = $gradeitem->has_grades();
 743              }
 744          }
 745  
 746          $mform->addElement('modgrade', $scalefieldname, get_string('scale'), $gradeoptions);
 747          $mform->hideIf($scalefieldname, $assessedfieldname, 'eq', 0);
 748          $mform->addHelpButton($scalefieldname, 'modgrade', 'grades');
 749          $mform->setDefault($scalefieldname, $CFG->gradepointdefault);
 750  
 751          $mform->addElement('checkbox', 'ratingtime', get_string('ratingtime', 'rating'));
 752          $mform->hideIf('ratingtime', $assessedfieldname, 'eq', 0);
 753  
 754          $mform->addElement('date_time_selector', 'assesstimestart', get_string('from'));
 755          $mform->hideIf('assesstimestart', $assessedfieldname, 'eq', 0);
 756          $mform->hideIf('assesstimestart', 'ratingtime');
 757  
 758          $mform->addElement('date_time_selector', 'assesstimefinish', get_string('to'));
 759          $mform->hideIf('assesstimefinish', $assessedfieldname, 'eq', 0);
 760          $mform->hideIf('assesstimefinish', 'ratingtime');
 761  
 762          if ($this->_features->gradecat) {
 763              $mform->addElement(
 764                  'select',
 765                  $gradecatfieldname,
 766                  get_string('gradecategoryonmodform', 'grades'),
 767                  grade_get_categories_menu($COURSE->id, $this->_outcomesused)
 768              );
 769              $mform->addHelpButton($gradecatfieldname, 'gradecategoryonmodform', 'grades');
 770              $mform->hideIf($gradecatfieldname, $assessedfieldname, 'eq', 0);
 771              $mform->hideIf($gradecatfieldname, "{$scalefieldname}[modgrade_type]", 'eq', 'none');
 772          }
 773  
 774          // Grade to pass.
 775          $mform->addElement('float', $gradepassfieldname, get_string('gradepass', 'grades'));
 776          $mform->addHelpButton($gradepassfieldname, 'gradepass', 'grades');
 777          $mform->setDefault($gradepassfieldname, '');
 778          $mform->hideIf($gradepassfieldname, $assessedfieldname, 'eq', '0');
 779          $mform->hideIf($gradepassfieldname, "{$scalefieldname}[modgrade_type]", 'eq', 'none');
 780      }
 781  
 782      /**
 783       * Plugins can extend the coursemodule settings form.
 784       */
 785      protected function plugin_extend_coursemodule_standard_elements() {
 786          $callbacks = get_plugins_with_function('coursemodule_standard_elements', 'lib.php');
 787          foreach ($callbacks as $type => $plugins) {
 788              foreach ($plugins as $plugin => $pluginfunction) {
 789                  // We have exposed all the important properties with public getters - and the callback can manipulate the mform
 790                  // directly.
 791                  $pluginfunction($this, $this->_form);
 792              }
 793          }
 794      }
 795  
 796      /**
 797       * Plugins can extend the coursemodule settings form after the data is set.
 798       */
 799      protected function plugin_extend_coursemodule_definition_after_data() {
 800          $callbacks = get_plugins_with_function('coursemodule_definition_after_data', 'lib.php');
 801          foreach ($callbacks as $type => $plugins) {
 802              foreach ($plugins as $plugin => $pluginfunction) {
 803                  $pluginfunction($this, $this->_form);
 804              }
 805          }
 806      }
 807  
 808      /**
 809       * Can be overridden to add custom completion rules if the module wishes
 810       * them. If overriding this, you should also override completion_rule_enabled.
 811       * <p>
 812       * Just add elements to the form as needed and return the list of IDs. The
 813       * system will call disabledIf and handle other behaviour for each returned
 814       * ID.
 815       * @return array Array of string IDs of added items, empty array if none
 816       */
 817      function add_completion_rules() {
 818          return array();
 819      }
 820  
 821      /**
 822       * Called during validation. Override to indicate, based on the data, whether
 823       * a custom completion rule is enabled (selected).
 824       *
 825       * @param array $data Input data (not yet validated)
 826       * @return bool True if one or more rules is enabled, false if none are;
 827       *   default returns false
 828       */
 829      function completion_rule_enabled($data) {
 830          return false;
 831      }
 832  
 833      /**
 834       * Add completion grading elements to the form and return the list of element ids.
 835       *
 836       * @return array Array of string IDs of added items, empty array if none
 837       */
 838      public function add_completiongrade_rules(): array {
 839          return [];
 840      }
 841  
 842      function standard_hidden_coursemodule_elements(){
 843          $mform =& $this->_form;
 844          $mform->addElement('hidden', 'course', 0);
 845          $mform->setType('course', PARAM_INT);
 846  
 847          $mform->addElement('hidden', 'coursemodule', 0);
 848          $mform->setType('coursemodule', PARAM_INT);
 849  
 850          $mform->addElement('hidden', 'section', 0);
 851          $mform->setType('section', PARAM_INT);
 852  
 853          $mform->addElement('hidden', 'module', 0);
 854          $mform->setType('module', PARAM_INT);
 855  
 856          $mform->addElement('hidden', 'modulename', '');
 857          $mform->setType('modulename', PARAM_PLUGIN);
 858  
 859          $mform->addElement('hidden', 'instance', 0);
 860          $mform->setType('instance', PARAM_INT);
 861  
 862          $mform->addElement('hidden', 'add', 0);
 863          $mform->setType('add', PARAM_ALPHANUM);
 864  
 865          $mform->addElement('hidden', 'update', 0);
 866          $mform->setType('update', PARAM_INT);
 867  
 868          $mform->addElement('hidden', 'return', 0);
 869          $mform->setType('return', PARAM_BOOL);
 870  
 871          $mform->addElement('hidden', 'sr', 0);
 872          $mform->setType('sr', PARAM_INT);
 873  
 874          $mform->addElement('hidden', 'beforemod', 0);
 875          $mform->setType('beforemod', PARAM_INT);
 876  
 877          $mform->addElement('hidden', 'showonly', '');
 878          $mform->setType('showonly', PARAM_ALPHANUMEXT);
 879      }
 880  
 881      public function standard_grading_coursemodule_elements() {
 882          global $COURSE, $CFG;
 883  
 884          if ($this->gradedorrated && $this->gradedorrated !== 'graded') {
 885              return;
 886          }
 887          if ($this->_features->rating) {
 888              return;
 889          }
 890          $this->gradedorrated = 'graded';
 891  
 892          $itemnumber = 0;
 893          $component = "mod_{$this->_modname}";
 894          $gradefieldname = component_gradeitems::get_field_name_for_itemnumber($component, $itemnumber, 'grade');
 895          $gradecatfieldname = component_gradeitems::get_field_name_for_itemnumber($component, $itemnumber, 'gradecat');
 896          $gradepassfieldname = component_gradeitems::get_field_name_for_itemnumber($component, $itemnumber, 'gradepass');
 897  
 898          $mform =& $this->_form;
 899          $isupdate = !empty($this->_cm);
 900          $gradeoptions = array('isupdate' => $isupdate,
 901                                'currentgrade' => false,
 902                                'hasgrades' => false,
 903                                'canrescale' => $this->_features->canrescale,
 904                                'useratings' => $this->_features->rating);
 905  
 906          if ($this->_features->hasgrades) {
 907              if ($this->_features->gradecat) {
 908                  $mform->addElement('header', 'modstandardgrade', get_string('gradenoun'));
 909              }
 910  
 911              //if supports grades and grades arent being handled via ratings
 912              if ($isupdate) {
 913                  $gradeitem = grade_item::fetch(array('itemtype' => 'mod',
 914                                                          'itemmodule' => $this->_cm->modname,
 915                                                          'iteminstance' => $this->_cm->instance,
 916                                                          'itemnumber' => 0,
 917                                                          'courseid' => $COURSE->id));
 918                  if ($gradeitem) {
 919                      $gradeoptions['currentgrade'] = $gradeitem->grademax;
 920                      $gradeoptions['currentgradetype'] = $gradeitem->gradetype;
 921                      $gradeoptions['currentscaleid'] = $gradeitem->scaleid;
 922                      $gradeoptions['hasgrades'] = $gradeitem->has_grades();
 923                  }
 924              }
 925              $mform->addElement('modgrade', $gradefieldname, get_string('gradenoun'), $gradeoptions);
 926              $mform->addHelpButton($gradefieldname, 'modgrade', 'grades');
 927              $mform->setDefault($gradefieldname, $CFG->gradepointdefault);
 928  
 929              if ($this->_features->advancedgrading
 930                      and !empty($this->current->_advancedgradingdata['methods'])
 931                      and !empty($this->current->_advancedgradingdata['areas'])) {
 932  
 933                  if (count($this->current->_advancedgradingdata['areas']) == 1) {
 934                      // if there is just one gradable area (most cases), display just the selector
 935                      // without its name to make UI simplier
 936                      $areadata = reset($this->current->_advancedgradingdata['areas']);
 937                      $areaname = key($this->current->_advancedgradingdata['areas']);
 938                      $mform->addElement('select', 'advancedgradingmethod_'.$areaname,
 939                          get_string('gradingmethod', 'core_grading'), $this->current->_advancedgradingdata['methods']);
 940                      $mform->addHelpButton('advancedgradingmethod_'.$areaname, 'gradingmethod', 'core_grading');
 941                      $mform->hideIf('advancedgradingmethod_'.$areaname, "{$gradefieldname}[modgrade_type]", 'eq', 'none');
 942  
 943                  } else {
 944                      // the module defines multiple gradable areas, display a selector
 945                      // for each of them together with a name of the area
 946                      $areasgroup = array();
 947                      foreach ($this->current->_advancedgradingdata['areas'] as $areaname => $areadata) {
 948                          $areasgroup[] = $mform->createElement('select', 'advancedgradingmethod_'.$areaname,
 949                              $areadata['title'], $this->current->_advancedgradingdata['methods']);
 950                          $areasgroup[] = $mform->createElement('static', 'advancedgradingareaname_'.$areaname, '', $areadata['title']);
 951                      }
 952                      $mform->addGroup($areasgroup, 'advancedgradingmethodsgroup', get_string('gradingmethods', 'core_grading'),
 953                          array(' ', '<br />'), false);
 954                  }
 955              }
 956  
 957              if ($this->_features->gradecat) {
 958                  $mform->addElement('select', $gradecatfieldname,
 959                          get_string('gradecategoryonmodform', 'grades'),
 960                          grade_get_categories_menu($COURSE->id, $this->_outcomesused));
 961                  $mform->addHelpButton($gradecatfieldname, 'gradecategoryonmodform', 'grades');
 962                  $mform->hideIf($gradecatfieldname, "{$gradefieldname}[modgrade_type]", 'eq', 'none');
 963              }
 964  
 965              // Grade to pass.
 966              $mform->addElement('float', $gradepassfieldname, get_string($gradepassfieldname, 'grades'));
 967              $mform->addHelpButton($gradepassfieldname, $gradepassfieldname, 'grades');
 968              $mform->setDefault($gradepassfieldname, '');
 969              $mform->hideIf($gradepassfieldname, "{$gradefieldname}[modgrade_type]", 'eq', 'none');
 970          }
 971      }
 972  
 973      /**
 974       * Add an editor for an activity's introduction field.
 975       * @deprecated since MDL-49101 - use moodleform_mod::standard_intro_elements() instead.
 976       * @param null $required Override system default for requiremodintro
 977       * @param null $customlabel Override default label for editor
 978       * @throws coding_exception
 979       */
 980      protected function add_intro_editor($required=null, $customlabel=null) {
 981          $str = "Function moodleform_mod::add_intro_editor() is deprecated, use moodleform_mod::standard_intro_elements() instead.";
 982          debugging($str, DEBUG_DEVELOPER);
 983  
 984          $this->standard_intro_elements($customlabel);
 985      }
 986  
 987  
 988      /**
 989       * Add an editor for an activity's introduction field.
 990       *
 991       * @param null $customlabel Override default label for editor
 992       * @throws coding_exception
 993       */
 994      protected function standard_intro_elements($customlabel=null) {
 995          global $CFG;
 996  
 997          $required = $CFG->requiremodintro;
 998  
 999          $mform = $this->_form;
1000          $label = is_null($customlabel) ? get_string('moduleintro') : $customlabel;
1001  
1002          $mform->addElement('editor', 'introeditor', $label, array('rows' => 10), array('maxfiles' => EDITOR_UNLIMITED_FILES,
1003              'noclean' => true, 'context' => $this->context, 'subdirs' => true));
1004          $mform->setType('introeditor', PARAM_RAW); // no XSS prevention here, users must be trusted
1005          if ($required) {
1006              $mform->addRule('introeditor', get_string('required'), 'required', null, 'client');
1007          }
1008  
1009          // If the 'show description' feature is enabled, this checkbox appears below the intro.
1010          // We want to hide that when using the singleactivity course format because it is confusing.
1011          if ($this->_features->showdescription  && $this->courseformat->has_view_page()) {
1012              $mform->addElement('advcheckbox', 'showdescription', get_string('showdescription'));
1013              $mform->addHelpButton('showdescription', 'showdescription');
1014          }
1015      }
1016  
1017      /**
1018       * Overriding formslib's add_action_buttons() method, to add an extra submit "save changes and return" button.
1019       *
1020       * @param bool $cancel show cancel button
1021       * @param string $submitlabel null means default, false means none, string is label text
1022       * @param string $submit2label  null means default, false means none, string is label text
1023       * @return void
1024       */
1025      function add_action_buttons($cancel=true, $submitlabel=null, $submit2label=null) {
1026          if (is_null($submitlabel)) {
1027              $submitlabel = get_string('savechangesanddisplay');
1028          }
1029  
1030          if (is_null($submit2label)) {
1031              $submit2label = get_string('savechangesandreturntocourse');
1032          }
1033  
1034          $mform = $this->_form;
1035  
1036          $mform->addElement('checkbox', 'coursecontentnotification', get_string('coursecontentnotification', 'course'));
1037          $mform->addHelpButton('coursecontentnotification', 'coursecontentnotification', 'course');
1038          $mform->closeHeaderBefore('coursecontentnotification');
1039  
1040          // elements in a row need a group
1041          $buttonarray = array();
1042  
1043          // Label for the submit button to return to the course.
1044          // Ignore this button in single activity format because it is confusing.
1045          if ($submit2label !== false && $this->courseformat->has_view_page()) {
1046              $buttonarray[] = &$mform->createElement('submit', 'submitbutton2', $submit2label);
1047          }
1048  
1049          if ($submitlabel !== false) {
1050              $buttonarray[] = &$mform->createElement('submit', 'submitbutton', $submitlabel);
1051          }
1052  
1053          if ($cancel) {
1054              $buttonarray[] = &$mform->createElement('cancel');
1055          }
1056  
1057          $mform->addGroup($buttonarray, 'buttonar', '', array(' '), false);
1058          $mform->setType('buttonar', PARAM_RAW);
1059      }
1060  
1061      /**
1062       * Get the list of admin settings for this module and apply any locked settings.
1063       * This cannot happen in apply_admin_defaults because we do not the current values of the settings
1064       * in that function because set_data has not been called yet.
1065       *
1066       * @return void
1067       */
1068      protected function apply_admin_locked_flags() {
1069          global $OUTPUT;
1070  
1071          if (!$this->applyadminlockedflags) {
1072              return;
1073          }
1074  
1075          $settings = get_config($this->_modname);
1076          $mform = $this->_form;
1077          $lockedicon = html_writer::tag('span',
1078                                         $OUTPUT->pix_icon('t/locked', get_string('locked', 'admin')),
1079                                         array('class' => 'action-icon'));
1080          $isupdate = !empty($this->_cm);
1081  
1082          foreach ($settings as $name => $value) {
1083              if (strpos('_', $name) !== false) {
1084                  continue;
1085              }
1086              if ($mform->elementExists($name)) {
1087                  $element = $mform->getElement($name);
1088                  $lockedsetting = $name . '_locked';
1089                  if (!empty($settings->$lockedsetting)) {
1090                      // Always lock locked settings for new modules,
1091                      // for updates, only lock them if the current value is the same as the default (or there is no current value).
1092                      $value = $settings->$name;
1093                      if ($isupdate && isset($this->current->$name)) {
1094                          $value = $this->current->$name;
1095                      }
1096                      if ($value == $settings->$name) {
1097                          $mform->setConstant($name, $settings->$name);
1098                          $element->setLabel($element->getLabel() . $lockedicon);
1099                          // Do not use hardfreeze because we need the hidden input to check dependencies.
1100                          $element->freeze();
1101                      }
1102                  }
1103              }
1104          }
1105      }
1106  
1107      /**
1108       * Get the list of admin settings for this module and apply any defaults/advanced/locked/required settings.
1109       *
1110       * @param $datetimeoffsets array - If passed, this is an array of fieldnames => times that the
1111       *                         default date/time value should be relative to. If not passed, all
1112       *                         date/time fields are set relative to the users current midnight.
1113       * @return void
1114       */
1115      public function apply_admin_defaults($datetimeoffsets = array()) {
1116          // This flag triggers the settings to be locked in apply_admin_locked_flags().
1117          $this->applyadminlockedflags = true;
1118  
1119          $settings = get_config($this->_modname);
1120          $mform = $this->_form;
1121          $usermidnight = usergetmidnight(time());
1122          $isupdate = !empty($this->_cm);
1123  
1124          foreach ($settings as $name => $value) {
1125              if (strpos('_', $name) !== false) {
1126                  continue;
1127              }
1128              if ($mform->elementExists($name)) {
1129                  $element = $mform->getElement($name);
1130                  if (!$isupdate) {
1131                      if ($element->getType() == 'date_time_selector') {
1132                          $enabledsetting = $name . '_enabled';
1133                          if (empty($settings->$enabledsetting)) {
1134                              $mform->setDefault($name, 0);
1135                          } else {
1136                              $relativetime = $usermidnight;
1137                              if (isset($datetimeoffsets[$name])) {
1138                                  $relativetime = $datetimeoffsets[$name];
1139                              }
1140                              $mform->setDefault($name, $relativetime + $settings->$name);
1141                          }
1142                      } else {
1143                          $mform->setDefault($name, $settings->$name);
1144                      }
1145                  }
1146                  $advancedsetting = $name . '_adv';
1147                  if (!empty($settings->$advancedsetting)) {
1148                      $mform->setAdvanced($name);
1149                  }
1150                  $requiredsetting = $name . '_required';
1151                  if (!empty($settings->$requiredsetting)) {
1152                      $mform->addRule($name, null, 'required', null, 'client');
1153                  }
1154              }
1155          }
1156      }
1157  
1158      /**
1159       * Allows modules to modify the data returned by form get_data().
1160       * This method is also called in the bulk activity completion form.
1161       *
1162       * Only available on moodleform_mod.
1163       *
1164       * @param stdClass $data passed by reference
1165       */
1166      public function data_postprocessing($data) {
1167      }
1168  
1169      /**
1170       * Return submitted data if properly submitted or returns NULL if validation fails or
1171       * if there is no submitted data.
1172       *
1173       * Do not override this method, override data_postprocessing() instead.
1174       *
1175       * @return object submitted data; NULL if not valid or not submitted or cancelled
1176       */
1177      public function get_data() {
1178          $data = parent::get_data();
1179          if ($data) {
1180              // Convert the grade pass value - we may be using a language which uses commas,
1181              // rather than decimal points, in numbers. These need to be converted so that
1182              // they can be added to the DB.
1183              if (isset($data->gradepass)) {
1184                  $data->gradepass = unformat_float($data->gradepass);
1185              }
1186  
1187              // Trim name for all activity name.
1188              if (isset($data->name)) {
1189                  $data->name = trim($data->name);
1190              }
1191  
1192              $this->data_postprocessing($data);
1193          }
1194          return $data;
1195      }
1196  }