course/modlib.php

   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 /**
  18  * Library of functions specific to course/modedit.php and course API functions.
  19  * The course API function calling them are course/lib.php:create_module() and update_module().
  20  * This file has been created has an alternative solution to a full refactor of course/modedit.php
  21  * in order to create the course API functions.
  22  *
  23  * @copyright 2013 Jerome Mouneyrac
  24  * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  25  * @package core_course
  26  */
  27
  28 defined('MOODLE_INTERNAL') || die;
  29
  30 use \core_grades\component_gradeitems;
  31
  32 require_once($CFG->dirroot.'/course/lib.php');
  33
  34 /**
  35  * Add course module.
  36  *
  37  * The function does not check user capabilities.
  38  * The function creates course module, module instance, add the module to the correct section.
  39  * It also trigger common action that need to be done after adding/updating a module.
  40  *
  41  * @param object $moduleinfo the moudle data
  42  * @param object $course the course of the module
  43  * @param object $mform this is required by an existing hack to deal with files during MODULENAME_add_instance()
  44  * @return object the updated module info
  45  */
  46 function add_moduleinfo($moduleinfo, $course, $mform = null) {
  47     global $DB, $CFG;
  48
  49     // Attempt to include module library before we make any changes to DB.
  50     include_modulelib($moduleinfo->modulename);
  51
  52     $moduleinfo->course = $course->id;
  53     $moduleinfo = set_moduleinfo_defaults($moduleinfo);
  54
  55     if (!empty($course->groupmodeforce) or !isset($moduleinfo->groupmode)) {
  56         $moduleinfo->groupmode = 0; // Do not set groupmode.
  57     }
  58
  59     // First add course_module record because we need the context.
  60     $newcm = new stdClass();
  61     $newcm->course           = $course->id;
  62     $newcm->module           = $moduleinfo->module;
  63     $newcm->instance         = 0; // Not known yet, will be updated later (this is similar to restore code).
  64     $newcm->visible          = $moduleinfo->visible;
  65     $newcm->visibleold       = $moduleinfo->visible;
  66     $newcm->visibleoncoursepage = $moduleinfo->visibleoncoursepage;
  67     if (isset($moduleinfo->cmidnumber)) {
  68         $newcm->idnumber         = $moduleinfo->cmidnumber;
  69     }
  70     if (isset($moduleinfo->downloadcontent)) {
  71         $newcm->downloadcontent = $moduleinfo->downloadcontent;
  72     }
  73     if (has_capability('moodle/course:setforcedlanguage', context_course::instance($course->id))) {
  74         $newcm->lang = $moduleinfo->lang ?? null;
  75     } else {
  76         $newcm->lang = null;
  77     }
  78     $newcm->groupmode        = $moduleinfo->groupmode;
  79     $newcm->groupingid       = $moduleinfo->groupingid;
  80     $completion = new completion_info($course);
  81     if ($completion->is_enabled()) {
  82         $newcm->completion                = $moduleinfo->completion;
  83         $newcm->completionpassgrade       = $moduleinfo->completionpassgrade ?? 0;
  84         if ($moduleinfo->completiongradeitemnumber === '') {
  85             $newcm->completiongradeitemnumber = null;
  86         } else {
  87             $newcm->completiongradeitemnumber = $moduleinfo->completiongradeitemnumber;
  88         }
  89         $newcm->completionview            = $moduleinfo->completionview;
  90         $newcm->completionexpected        = $moduleinfo->completionexpected;
  91     }
  92     if(!empty($CFG->enableavailability)) {
  93         // This code is used both when submitting the form, which uses a long
  94         // name to avoid clashes, and by unit test code which uses the real
  95         // name in the table.
  96         $newcm->availability = null;
  97         if (property_exists($moduleinfo, 'availabilityconditionsjson')) {
  98             if ($moduleinfo->availabilityconditionsjson !== '') {
  99                 $newcm->availability = $moduleinfo->availabilityconditionsjson;
 100             }
 101         } else if (property_exists($moduleinfo, 'availability')) {
 102             $newcm->availability = $moduleinfo->availability;
 103         }
 104         // If there is any availability data, verify it.
 105         if ($newcm->availability) {
 106             $tree = new \core_availability\tree(json_decode($newcm->availability));
 107             // Save time and database space by setting null if the only data
 108             // is an empty tree.
 109             if ($tree->is_empty()) {
 110                 $newcm->availability = null;
 111             }
 112         }
 113     }
 114     if (isset($moduleinfo->showdescription)) {
 115         $newcm->showdescription = $moduleinfo->showdescription;
 116     } else {
 117         $newcm->showdescription = 0;
 118     }
 119     if (empty($moduleinfo->beforemod)) {
 120         $moduleinfo->beforemod = null;
 121     }
 122
 123     // From this point we make database changes, so start transaction.
 124     $transaction = $DB->start_delegated_transaction();
 125
 126     if (!$moduleinfo->coursemodule = add_course_module($newcm)) {
 127         throw new \moodle_exception('cannotaddcoursemodule');
 128     }
 129
 130     if (plugin_supports('mod', $moduleinfo->modulename, FEATURE_MOD_INTRO, true) &&
 131             isset($moduleinfo->introeditor)) {
 132         $introeditor = $moduleinfo->introeditor;
 133         unset($moduleinfo->introeditor);
 134         $moduleinfo->intro       = $introeditor['text'];
 135         $moduleinfo->introformat = $introeditor['format'];
 136     }
 137
 138     $addinstancefunction    = $moduleinfo->modulename."_add_instance";
 139     try {
 140         $returnfromfunc = $addinstancefunction($moduleinfo, $mform);
 141     } catch (moodle_exception $e) {
 142         $returnfromfunc = $e;
 143     }
 144     if (!$returnfromfunc or !is_number($returnfromfunc)) {
 145         // Undo everything we can. This is not necessary for databases which
 146         // support transactions, but improves consistency for other databases.
 147         context_helper::delete_instance(CONTEXT_MODULE, $moduleinfo->coursemodule);
 148         $DB->delete_records('course_modules', array('id'=>$moduleinfo->coursemodule));
 149
 150         if ($returnfromfunc instanceof moodle_exception) {
 151             throw $returnfromfunc;
 152         } else if (!is_number($returnfromfunc)) {
 153             throw new \moodle_exception('invalidfunction', '', course_get_url($course, $moduleinfo->section));
 154         } else {
 155             throw new \moodle_exception('cannotaddnewmodule', '', course_get_url($course, $moduleinfo->section),
 156                 $moduleinfo->modulename);
 157         }
 158     }
 159
 160     $moduleinfo->instance = $returnfromfunc;
 161
 162     $DB->set_field('course_modules', 'instance', $returnfromfunc, array('id'=>$moduleinfo->coursemodule));
 163
 164     // Update embedded links and save files.
 165     $modcontext = context_module::instance($moduleinfo->coursemodule);
 166     if (!empty($introeditor)) {
 167         // This will respect a module that has set a value for intro in it's modname_add_instance() function.
 168         $introeditor['text'] = $moduleinfo->intro;
 169
 170         $moduleinfo->intro = file_save_draft_area_files($introeditor['itemid'], $modcontext->id,
 171                                                       'mod_'.$moduleinfo->modulename, 'intro', 0,
 172                                                       array('subdirs'=>true), $introeditor['text']);
 173         $DB->set_field($moduleinfo->modulename, 'intro', $moduleinfo->intro, array('id'=>$moduleinfo->instance));
 174     }
 175
 176     // Add module tags.
 177     if (core_tag_tag::is_enabled('core', 'course_modules') && isset($moduleinfo->tags)) {
 178         core_tag_tag::set_item_tags('core', 'course_modules', $moduleinfo->coursemodule, $modcontext, $moduleinfo->tags);
 179     }
 180
 181     // Course_modules and course_sections each contain a reference to each other.
 182     // So we have to update one of them twice.
 183     $sectionid = course_add_cm_to_section($course, $moduleinfo->coursemodule, $moduleinfo->section, $moduleinfo->beforemod);
 184
 185     // Trigger event based on the action we did.
 186     // Api create_from_cm expects modname and id property, and we don't want to modify $moduleinfo since we are returning it.
 187     $eventdata = clone $moduleinfo;
 188     $eventdata->modname = $eventdata->modulename;
 189     $eventdata->id = $eventdata->coursemodule;
 190     $event = \core\event\course_module_created::create_from_cm($eventdata, $modcontext);
 191     $event->trigger();
 192
 193     $moduleinfo = edit_module_post_actions($moduleinfo, $course);
 194     $transaction->allow_commit();
 195
 196     return $moduleinfo;
 197 }
 198
 199 /**
 200  * Hook for plugins to take action when a module is created or updated.
 201  *
 202  * @param stdClass $moduleinfo the module info
 203  * @param stdClass $course the course of the module
 204  *
 205  * @return stdClass moduleinfo updated by plugins.
 206  */
 207 function plugin_extend_coursemodule_edit_post_actions($moduleinfo, $course) {
 208     $callbacks = get_plugins_with_function('coursemodule_edit_post_actions', 'lib.php');
 209     foreach ($callbacks as $type => $plugins) {
 210         foreach ($plugins as $plugin => $pluginfunction) {
 211             $moduleinfo = $pluginfunction($moduleinfo, $course);
 212         }
 213     }
 214     return $moduleinfo;
 215 }
 216
 217 /**
 218  * Common create/update module module actions that need to be processed as soon as a module is created/updaded.
 219  * For example:create grade parent category, add outcomes, rebuild caches, regrade, save plagiarism settings...
 220  * Please note this api does not trigger events as of MOODLE 2.6. Please trigger events before calling this api.
 221  *
 222  * @param object $moduleinfo the module info
 223  * @param object $course the course of the module
 224  *
 225  * @return object moduleinfo update with grading management info
 226  */
 227 function edit_module_post_actions($moduleinfo, $course) {
 228     global $CFG, $USER;
 229     require_once($CFG->libdir.'/gradelib.php');
 230
 231     $modcontext = context_module::instance($moduleinfo->coursemodule);
 232     $hasgrades = plugin_supports('mod', $moduleinfo->modulename, FEATURE_GRADE_HAS_GRADE, false);
 233     $hasoutcomes = plugin_supports('mod', $moduleinfo->modulename, FEATURE_GRADE_OUTCOMES, true);
 234
 235     $items = grade_item::fetch_all([
 236         'itemtype' => 'mod',
 237         'itemmodule' => $moduleinfo->modulename,
 238         'iteminstance' => $moduleinfo->instance,
 239         'courseid' => $course->id,
 240     ]);
 241
 242     // Create parent category if requested and move to correct parent category.
 243     $component = "mod_{$moduleinfo->modulename}";
 244     if ($items) {
 245         foreach ($items as $item) {
 246             $update = false;
 247
 248             // Sync idnumber with grade_item.
 249             // Note: This only happens for itemnumber 0 at this time.
 250             if ($item->itemnumber == 0 && ($item->idnumber != $moduleinfo->cmidnumber)) {
 251                 $item->idnumber = $moduleinfo->cmidnumber;
 252                 $update = true;
 253             }
 254
 255             // Determine the grade category.
 256             $gradecatfieldname = component_gradeitems::get_field_name_for_itemnumber($component, $item->itemnumber, 'gradecat');
 257             if (property_exists($moduleinfo, $gradecatfieldname)) {
 258                 $gradecat = $moduleinfo->$gradecatfieldname;
 259                 if ($gradecat == -1) {
 260                     $gradecategory = new grade_category();
 261                     $gradecategory->courseid = $course->id;
 262                     $gradecategory->fullname = $moduleinfo->name;
 263                     $gradecategory->insert();
 264
 265                     $parent = $item->get_parent_category();
 266                     $gradecategory->set_parent($parent->id);
 267                     $gradecat = $gradecategory->id;
 268                 }
 269
 270                 $oldgradecat = null;
 271                 if ($parent = $item->get_parent_category()) {
 272                     $oldgradecat = $parent->id;
 273                 }
 274                 if ($oldgradecat != $gradecat) {
 275                     $item->set_parent($gradecat);
 276                     $update = true;
 277                 }
 278             }
 279
 280             // Determine the gradepass.
 281             $gradepassfieldname = component_gradeitems::get_field_name_for_itemnumber($component, $item->itemnumber, 'gradepass');
 282             if (isset($moduleinfo->{$gradepassfieldname})) {
 283                 $gradepass = $moduleinfo->{$gradepassfieldname};
 284                 if (null !== $gradepass && $gradepass != $item->gradepass) {
 285                     $item->gradepass = $gradepass;
 286                     $update = true;
 287                 }
 288             }
 289
 290             if ($update) {
 291                 $item->update();
 292             }
 293
 294             if (!empty($moduleinfo->add)) {
 295                 $gradecategory = $item->get_parent_category();
 296                 if ($item->set_aggregation_fields_for_aggregation(0, $gradecategory->aggregation)) {
 297                     $item->update();
 298                 }
 299             }
 300         }
 301     }
 302
 303     require_once($CFG->libdir.'/grade/grade_outcome.php');
 304     // Add outcomes if requested.
 305     if ($hasoutcomes && $outcomes = grade_outcome::fetch_all_available($course->id)) {
 306         // Outcome grade_item.itemnumber start at 1000, there is nothing above outcomes.
 307         $max_itemnumber = 999;
 308         if ($items) {
 309             foreach($items as $item) {
 310                 if ($item->itemnumber > $max_itemnumber) {
 311                     $max_itemnumber = $item->itemnumber;
 312                 }
 313             }
 314         }
 315
 316         foreach($outcomes as $outcome) {
 317             $elname = 'outcome_'.$outcome->id;
 318
 319             if (property_exists($moduleinfo, $elname) and $moduleinfo->$elname) {
 320                 // Check if this is a new outcome grade item.
 321                 $outcomeexists = false;
 322                 if ($items) {
 323                     foreach($items as $item) {
 324                         if ($item->outcomeid == $outcome->id) {
 325                             $outcomeexists = true;
 326                             break;
 327                         }
 328                     }
 329                     if ($outcomeexists) {
 330                         continue;
 331                     }
 332                 }
 333
 334                 $max_itemnumber++;
 335
 336                 $outcomeitem = new grade_item();
 337                 $outcomeitem->courseid     = $course->id;
 338                 $outcomeitem->itemtype     = 'mod';
 339                 $outcomeitem->itemmodule   = $moduleinfo->modulename;
 340                 $outcomeitem->iteminstance = $moduleinfo->instance;
 341                 $outcomeitem->itemnumber   = $max_itemnumber;
 342                 $outcomeitem->itemname     = $outcome->fullname;
 343                 $outcomeitem->outcomeid    = $outcome->id;
 344                 $outcomeitem->gradetype    = GRADE_TYPE_SCALE;
 345                 $outcomeitem->scaleid      = $outcome->scaleid;
 346                 $outcomeitem->insert();
 347
 348                 if ($items) {
 349                     // Move the new outcome into the same category and immediately after the first grade item.
 350                     $item = reset($items);
 351                     $outcomeitem->set_parent($item->categoryid);
 352                     $outcomeitem->move_after_sortorder($item->sortorder);
 353                 } else if (isset($moduleinfo->gradecat)) {
 354                     $outcomeitem->set_parent($moduleinfo->gradecat);
 355                 }
 356
 357                 if (!$outcomeexists) {
 358                     $gradecategory = $outcomeitem->get_parent_category();
 359                     if ($outcomeitem->set_aggregation_fields_for_aggregation(0, $gradecategory->aggregation)) {
 360                         $outcomeitem->update();
 361                     }
 362                 }
 363             }
 364         }
 365     }
 366
 367     if (plugin_supports('mod', $moduleinfo->modulename, FEATURE_ADVANCED_GRADING, false)
 368             and has_capability('moodle/grade:managegradingforms', $modcontext)) {
 369         require_once($CFG->dirroot.'/grade/grading/lib.php');
 370         $gradingman = get_grading_manager($modcontext, 'mod_'.$moduleinfo->modulename);
 371         $showgradingmanagement = false;
 372         foreach ($gradingman->get_available_areas() as $areaname => $aretitle) {
 373             $formfield = 'advancedgradingmethod_'.$areaname;
 374             if (isset($moduleinfo->{$formfield})) {
 375                 $gradingman->set_area($areaname);
 376                 $methodchanged = $gradingman->set_active_method($moduleinfo->{$formfield});
 377                 if (empty($moduleinfo->{$formfield})) {
 378                     // Going back to the simple direct grading is not a reason to open the management screen.
 379                     $methodchanged = false;
 380                 }
 381                 $showgradingmanagement = $showgradingmanagement || $methodchanged;
 382             }
 383         }
 384         // Update grading management information.
 385         $moduleinfo->gradingman = $gradingman;
 386         $moduleinfo->showgradingmanagement = $showgradingmanagement;
 387     }
 388
 389     \course_modinfo::purge_course_module_cache($course->id, $moduleinfo->coursemodule);
 390     rebuild_course_cache($course->id, true, true);
 391
 392     if ($hasgrades) {
 393         // If regrading will be slow, and this is happening in response to front-end UI...
 394         if (!empty($moduleinfo->frontend) && grade_needs_regrade_progress_bar($course->id)) {
 395             // And if it actually needs regrading...
 396             $courseitem = grade_item::fetch_course_item($course->id);
 397             if ($courseitem->needsupdate) {
 398                 // Then don't do it as part of this form save, do it on an extra web request with a
 399                 // progress bar.
 400                 $moduleinfo->needsfrontendregrade = true;
 401             }
 402         } else {
 403             // Regrade now.
 404             grade_regrade_final_grades($course->id);
 405         }
 406     }
 407
 408     // Allow plugins to extend the course module form.
 409     $moduleinfo = plugin_extend_coursemodule_edit_post_actions($moduleinfo, $course);
 410
 411     if (!empty($moduleinfo->coursecontentnotification)) {
 412         // Schedule adhoc-task for delivering the course content updated notification.
 413         if ($course->visible && $moduleinfo->visible) {
 414             $adhocktask = new \core_course\task\content_notification_task();
 415             $adhocktask->set_custom_data(
 416                 ['update' => $moduleinfo->update, 'cmid' => $moduleinfo->coursemodule,
 417                 'courseid' => $course->id, 'userfrom' => $USER->id]);
 418             $adhocktask->set_component('course');
 419             \core\task\manager::queue_adhoc_task($adhocktask, true);
 420         }
 421     }
 422
 423     return $moduleinfo;
 424 }
 425
 426 /**
 427  * Set module info default values for the unset module attributs.
 428  *
 429  * @param object $moduleinfo the current known data of the module
 430  * @return object the completed module info
 431  */
 432 function set_moduleinfo_defaults($moduleinfo) {
 433
 434     if (empty($moduleinfo->coursemodule)) {
 435         // Add.
 436         $cm = null;
 437         $moduleinfo->instance     = '';
 438         $moduleinfo->coursemodule = '';
 439     } else {
 440         // Update.
 441         $cm = get_coursemodule_from_id('', $moduleinfo->coursemodule, 0, false, MUST_EXIST);
 442         $moduleinfo->instance     = $cm->instance;
 443         $moduleinfo->coursemodule = $cm->id;
 444     }
 445     // For safety.
 446     $moduleinfo->modulename = clean_param($moduleinfo->modulename, PARAM_PLUGIN);
 447
 448     if (!isset($moduleinfo->groupingid)) {
 449         $moduleinfo->groupingid = 0;
 450     }
 451
 452     if (!isset($moduleinfo->name)) { // Label.
 453         $moduleinfo->name = $moduleinfo->modulename;
 454     }
 455
 456     if (!isset($moduleinfo->completion)) {
 457         $moduleinfo->completion = COMPLETION_DISABLED;
 458     }
 459     if (!isset($moduleinfo->completionview)) {
 460         $moduleinfo->completionview = COMPLETION_VIEW_NOT_REQUIRED;
 461     }
 462     if (!isset($moduleinfo->completionexpected)) {
 463         $moduleinfo->completionexpected = 0;
 464     }
 465
 466     // Convert the 'use grade' checkbox into a grade-item number: 0 if checked, null if not.
 467     if (isset($moduleinfo->completionusegrade) && $moduleinfo->completionusegrade) {
 468         $moduleinfo->completiongradeitemnumber = 0;
 469     } else if (!isset($moduleinfo->completiongradeitemnumber)) {
 470         // If there is no gradeitemnumber set, make sure to disable completionpassgrade.
 471         $moduleinfo->completionpassgrade = 0;
 472         $moduleinfo->completiongradeitemnumber = null;
 473     }
 474
 475     if (!isset($moduleinfo->conditiongradegroup)) {
 476         $moduleinfo->conditiongradegroup = array();
 477     }
 478     if (!isset($moduleinfo->conditionfieldgroup)) {
 479         $moduleinfo->conditionfieldgroup = array();
 480     }
 481     if (!isset($moduleinfo->visibleoncoursepage)) {
 482         $moduleinfo->visibleoncoursepage = 1;
 483     }
 484
 485     if (!isset($moduleinfo->downloadcontent)) {
 486         $moduleinfo->downloadcontent = DOWNLOAD_COURSE_CONTENT_ENABLED;
 487     }
 488
 489     return $moduleinfo;
 490 }
 491
 492 /**
 493  * Check that the user can add a module. Also returns some information like the module, context and course section info.
 494  * The fucntion create the course section if it doesn't exist.
 495  *
 496  * @param object $course the course of the module
 497  * @param object $modulename the module name
 498  * @param object $section the section of the module
 499  * @return array list containing module, context, course section.
 500  * @throws moodle_exception if user is not allowed to perform the action or module is not allowed in this course
 501  */
 502 function can_add_moduleinfo($course, $modulename, $section) {
 503     global $DB;
 504
 505     $module = $DB->get_record('modules', array('name'=>$modulename), '*', MUST_EXIST);
 506
 507     $context = context_course::instance($course->id);
 508     require_capability('moodle/course:manageactivities', $context);
 509
 510     course_create_sections_if_missing($course, $section);
 511     $cw = get_fast_modinfo($course)->get_section_info($section);
 512
 513     if (!course_allowed_module($course, $module->name)) {
 514         throw new \moodle_exception('moduledisable');
 515     }
 516
 517     return array($module, $context, $cw);
 518 }
 519
 520 /**
 521  * Check if user is allowed to update module info and returns related item/data to the module.
 522  *
 523  * @param object $cm course module
 524  * @return array - list of course module, context, module, moduleinfo, and course section.
 525  * @throws moodle_exception if user is not allowed to perform the action
 526  */
 527 function can_update_moduleinfo($cm) {
 528     global $DB;
 529
 530     // Check the $USER has the right capability.
 531     $context = context_module::instance($cm->id);
 532     require_capability('moodle/course:manageactivities', $context);
 533
 534     // Check module exists.
 535     $module = $DB->get_record('modules', array('id'=>$cm->module), '*', MUST_EXIST);
 536
 537     // Check the moduleinfo exists.
 538     $data = $DB->get_record($module->name, array('id'=>$cm->instance), '*', MUST_EXIST);
 539
 540     // Check the course section exists.
 541     $cw = $DB->get_record('course_sections', array('id'=>$cm->section), '*', MUST_EXIST);
 542
 543     return array($cm, $context, $module, $data, $cw);
 544 }
 545
 546
 547 /**
 548  * Update the module info.
 549  * This function doesn't check the user capabilities. It updates the course module and the module instance.
 550  * Then execute common action to create/update module process (trigger event, rebuild cache, save plagiarism settings...).
 551  *
 552  * @param object $cm course module
 553  * @param object $moduleinfo module info
 554  * @param object $course course of the module
 555  * @param object $mform - the mform is required by some specific module in the function MODULE_update_instance(). This is due to a hack in this function.
 556  * @return array list of course module and module info.
 557  */
 558 function update_moduleinfo($cm, $moduleinfo, $course, $mform = null) {
 559     global $DB, $CFG;
 560
 561     $data = new stdClass();
 562     if ($mform) {
 563         $data = $mform->get_data();
 564     }
 565
 566     // Attempt to include module library before we make any changes to DB.
 567     include_modulelib($moduleinfo->modulename);
 568
 569     $moduleinfo->course = $course->id;
 570     $moduleinfo = set_moduleinfo_defaults($moduleinfo);
 571
 572     $modcontext = context_module::instance($moduleinfo->coursemodule);
 573     if (has_capability('moodle/course:setforcedlanguage', $modcontext)) {
 574         $cm->lang = $moduleinfo->lang ?? null;
 575     } else {
 576         unset($cm->lang);
 577     }
 578
 579     if (!empty($course->groupmodeforce) or !isset($moduleinfo->groupmode)) {
 580         $moduleinfo->groupmode = $cm->groupmode; // Keep original.
 581     }
 582
 583     // Update course module first.
 584     $cm->groupmode = $moduleinfo->groupmode;
 585     if (isset($moduleinfo->groupingid)) {
 586         $cm->groupingid = $moduleinfo->groupingid;
 587     }
 588
 589     $completion = new completion_info($course);
 590     if ($completion->is_enabled()) {
 591         // Completion settings that would affect users who have already completed
 592         // the activity may be locked; if so, these should not be updated.
 593         if (!empty($moduleinfo->completionunlocked)) {
 594             $cm->completion = $moduleinfo->completion;
 595             $cm->completionpassgrade = $moduleinfo->completionpassgrade ?? 0;
 596             if ($moduleinfo->completiongradeitemnumber === '') {
 597                 $cm->completiongradeitemnumber = null;
 598             } else {
 599                 $cm->completiongradeitemnumber = $moduleinfo->completiongradeitemnumber;
 600             }
 601             $cm->completionview = $moduleinfo->completionview;
 602         }
 603         // The expected date does not affect users who have completed the activity,
 604         // so it is safe to update it regardless of the lock status.
 605         $cm->completionexpected = $moduleinfo->completionexpected;
 606     }
 607     if (!empty($CFG->enableavailability)) {
 608         // This code is used both when submitting the form, which uses a long
 609         // name to avoid clashes, and by unit test code which uses the real
 610         // name in the table.
 611         if (property_exists($moduleinfo, 'availabilityconditionsjson')) {
 612             if ($moduleinfo->availabilityconditionsjson !== '') {
 613                 $cm->availability = $moduleinfo->availabilityconditionsjson;
 614             } else {
 615                 $cm->availability = null;
 616             }
 617         } else if (property_exists($moduleinfo, 'availability')) {
 618             $cm->availability = $moduleinfo->availability;
 619         }
 620         // If there is any availability data, verify it.
 621         if ($cm->availability) {
 622             $tree = new \core_availability\tree(json_decode($cm->availability));
 623             // Save time and database space by setting null if the only data
 624             // is an empty tree.
 625             if ($tree->is_empty()) {
 626                 $cm->availability = null;
 627             }
 628         }
 629     }
 630     if (isset($moduleinfo->showdescription)) {
 631         $cm->showdescription = $moduleinfo->showdescription;
 632     } else {
 633         $cm->showdescription = 0;
 634     }
 635
 636     $DB->update_record('course_modules', $cm);
 637
 638     // Update embedded links and save files.
 639     if (plugin_supports('mod', $moduleinfo->modulename, FEATURE_MOD_INTRO, true)) {
 640         $moduleinfo->intro = file_save_draft_area_files($moduleinfo->introeditor['itemid'], $modcontext->id,
 641                                                       'mod_'.$moduleinfo->modulename, 'intro', 0,
 642                                                       array('subdirs'=>true), $moduleinfo->introeditor['text']);
 643         $moduleinfo->introformat = $moduleinfo->introeditor['format'];
 644         unset($moduleinfo->introeditor);
 645     }
 646     // Get the a copy of the grade_item before it is modified incase we need to scale the grades.
 647     $oldgradeitem = null;
 648     $newgradeitem = null;
 649     if (!empty($data->grade_rescalegrades) && $data->grade_rescalegrades == 'yes') {
 650         // Fetch the grade item before it is updated.
 651         $oldgradeitem = grade_item::fetch(array('itemtype' => 'mod',
 652                                                 'itemmodule' => $moduleinfo->modulename,
 653                                                 'iteminstance' => $moduleinfo->instance,
 654                                                 'itemnumber' => 0,
 655                                                 'courseid' => $moduleinfo->course));
 656     }
 657
 658     $updateinstancefunction = $moduleinfo->modulename."_update_instance";
 659     if (!$updateinstancefunction($moduleinfo, $mform)) {
 660         throw new \moodle_exception('cannotupdatemod', '', course_get_url($course, $cm->section), $moduleinfo->modulename);
 661     }
 662
 663     // This needs to happen AFTER the grademin/grademax have already been updated.
 664     if (!empty($data->grade_rescalegrades) && $data->grade_rescalegrades == 'yes') {
 665         // Get the grade_item after the update call the activity to scale the grades.
 666         $newgradeitem = grade_item::fetch(array('itemtype' => 'mod',
 667                                                 'itemmodule' => $moduleinfo->modulename,
 668                                                 'iteminstance' => $moduleinfo->instance,
 669                                                 'itemnumber' => 0,
 670                                                 'courseid' => $moduleinfo->course));
 671         if ($newgradeitem && $oldgradeitem->gradetype == GRADE_TYPE_VALUE && $newgradeitem->gradetype == GRADE_TYPE_VALUE) {
 672             $params = array(
 673                 $course,
 674                 $cm,
 675                 $oldgradeitem->grademin,
 676                 $oldgradeitem->grademax,
 677                 $newgradeitem->grademin,
 678                 $newgradeitem->grademax
 679             );
 680             if (!component_callback('mod_' . $moduleinfo->modulename, 'rescale_activity_grades', $params)) {
 681                 throw new \moodle_exception('cannotreprocessgrades', '', course_get_url($course, $cm->section),
 682                     $moduleinfo->modulename);
 683             }
 684         }
 685     }
 686
 687     // Make sure visibility is set correctly (in particular in calendar).
 688     if (has_capability('moodle/course:activityvisibility', $modcontext)) {
 689         set_coursemodule_visible($moduleinfo->coursemodule, $moduleinfo->visible, $moduleinfo->visibleoncoursepage);
 690     }
 691
 692     if (isset($moduleinfo->cmidnumber)) { // Label.
 693         // Set cm idnumber - uniqueness is already verified by form validation.
 694         set_coursemodule_idnumber($moduleinfo->coursemodule, $moduleinfo->cmidnumber);
 695     }
 696
 697     if (isset($moduleinfo->downloadcontent)) {
 698         set_downloadcontent($moduleinfo->coursemodule, $moduleinfo->downloadcontent);
 699     }
 700
 701     // Update module tags.
 702     if (core_tag_tag::is_enabled('core', 'course_modules') && isset($moduleinfo->tags)) {
 703         core_tag_tag::set_item_tags('core', 'course_modules', $moduleinfo->coursemodule, $modcontext, $moduleinfo->tags);
 704     }
 705     $moduleinfo = edit_module_post_actions($moduleinfo, $course);
 706
 707     // Now that module is fully updated, also update completion data if required.
 708     // (this will wipe all user completion data and recalculate it)
 709     if ($completion->is_enabled() && !empty($moduleinfo->completionunlocked)) {
 710         // Rebuild course cache before resetting completion states to ensure that the cm_info attributes are up to date.
 711         course_modinfo::build_course_cache($course);
 712         // Fetch this course module's info.
 713         $cminfo = cm_info::create($cm);
 714         $completion->reset_all_state($cminfo);
 715     }
 716     $cm->name = $moduleinfo->name;
 717     \core\event\course_module_updated::create_from_cm($cm, $modcontext)->trigger();
 718
 719     return array($cm, $moduleinfo);
 720 }
 721
 722 /**
 723  * Include once the module lib file.
 724  *
 725  * @param string $modulename module name of the lib to include
 726  * @throws moodle_exception if lib.php file for the module does not exist
 727  */
 728 function include_modulelib($modulename) {
 729     global $CFG;
 730     $modlib = "$CFG->dirroot/mod/$modulename/lib.php";
 731     if (file_exists($modlib)) {
 732         include_once($modlib);
 733     } else {
 734         throw new moodle_exception('modulemissingcode', '', '', $modlib);
 735     }
 736 }
 737
 738 /**
 739  * Get module information data required for updating the module.
 740  *
 741  * @param  stdClass $cm     course module object
 742  * @param  stdClass $course course object
 743  * @return array required data for updating a module
 744  * @since  Moodle 3.2
 745  */
 746 function get_moduleinfo_data($cm, $course) {
 747     global $CFG;
 748
 749     list($cm, $context, $module, $data, $cw) = can_update_moduleinfo($cm);
 750
 751     $data->coursemodule       = $cm->id;
 752     $data->section            = $cw->section;  // The section number itself - relative!!! (section column in course_sections)
 753     $data->visible            = $cm->visible; //??  $cw->visible ? $cm->visible : 0; // section hiding overrides
 754     $data->visibleoncoursepage = $cm->visibleoncoursepage;
 755     $data->cmidnumber         = $cm->idnumber;          // The cm IDnumber
 756     $data->groupmode          = groups_get_activity_groupmode($cm); // locked later if forced
 757     $data->groupingid         = $cm->groupingid;
 758     $data->course             = $course->id;
 759     $data->module             = $module->id;
 760     $data->modulename         = $module->name;
 761     $data->instance           = $cm->instance;
 762     $data->completion         = $cm->completion;
 763     $data->completionview     = $cm->completionview;
 764     $data->completionexpected = $cm->completionexpected;
 765     $data->completionusegrade = is_null($cm->completiongradeitemnumber) ? 0 : 1;
 766     $data->completionpassgrade = $cm->completionpassgrade;
 767     $data->completiongradeitemnumber = $cm->completiongradeitemnumber;
 768     $data->showdescription    = $cm->showdescription;
 769     $data->downloadcontent    = $cm->downloadcontent;
 770     $data->lang               = $cm->lang;
 771     $data->tags               = core_tag_tag::get_item_tags_array('core', 'course_modules', $cm->id);
 772     if (!empty($CFG->enableavailability)) {
 773         $data->availabilityconditionsjson = $cm->availability;
 774     }
 775
 776     if (plugin_supports('mod', $data->modulename, FEATURE_MOD_INTRO, true)) {
 777         $draftid_editor = file_get_submitted_draft_itemid('introeditor');
 778         $currentintro = file_prepare_draft_area($draftid_editor, $context->id, 'mod_'.$data->modulename, 'intro', 0, array('subdirs'=>true), $data->intro);
 779         $data->introeditor = array('text'=>$currentintro, 'format'=>$data->introformat, 'itemid'=>$draftid_editor);
 780     }
 781
 782     if (plugin_supports('mod', $data->modulename, FEATURE_ADVANCED_GRADING, false)
 783             and has_capability('moodle/grade:managegradingforms', $context)) {
 784         require_once($CFG->dirroot.'/grade/grading/lib.php');
 785         $gradingman = get_grading_manager($context, 'mod_'.$data->modulename);
 786         $data->_advancedgradingdata['methods'] = $gradingman->get_available_methods();
 787         $areas = $gradingman->get_available_areas();
 788
 789         foreach ($areas as $areaname => $areatitle) {
 790             $gradingman->set_area($areaname);
 791             $method = $gradingman->get_active_method();
 792             $data->_advancedgradingdata['areas'][$areaname] = array(
 793                 'title'  => $areatitle,
 794                 'method' => $method,
 795             );
 796             $formfield = 'advancedgradingmethod_'.$areaname;
 797             $data->{$formfield} = $method;
 798         }
 799     }
 800
 801     $component = "mod_{$data->modulename}";
 802     $items = grade_item::fetch_all([
 803         'itemtype' => 'mod',
 804         'itemmodule' => $data->modulename,
 805         'iteminstance' => $data->instance,
 806         'courseid' => $course->id,
 807     ]);
 808
 809     if ($items) {
 810         // Add existing outcomes.
 811         foreach ($items as $item) {
 812             if (!empty($item->outcomeid)) {
 813                 $data->{'outcome_' . $item->outcomeid} = 1;
 814             } else if (isset($item->gradepass)) {
 815                 $gradepassfieldname = component_gradeitems::get_field_name_for_itemnumber($component, $item->itemnumber, 'gradepass');
 816                 $data->{$gradepassfieldname} = format_float($item->gradepass, $item->get_decimals());
 817             }
 818
 819         }
 820
 821         // set category if present
 822         $gradecat = [];
 823         foreach ($items as $item) {
 824             if (!isset($gradecat[$item->itemnumber])) {
 825                 $gradecat[$item->itemnumber] = $item->categoryid;
 826             }
 827             if ($gradecat[$item->itemnumber] != $item->categoryid) {
 828                 // Mixed categories.
 829                 $gradecat[$item->itemnumber] = false;
 830             }
 831         }
 832         foreach ($gradecat as $itemnumber => $cat) {
 833             if ($cat !== false) {
 834                 $gradecatfieldname = component_gradeitems::get_field_name_for_itemnumber($component, $itemnumber, 'gradecat');
 835                 // Do not set if mixed categories present.
 836                 $data->{$gradecatfieldname} = $cat;
 837             }
 838         }
 839     }
 840     return array($cm, $context, $module, $data, $cw);
 841 }
 842
 843 /**
 844  * Prepare the standard module information for a new module instance.
 845  *
 846  * @param  stdClass $course  course object
 847  * @param  string $modulename  module name
 848  * @param  int $section section number
 849  * @return array module information about other required data
 850  * @since  Moodle 3.2
 851  */
 852 function prepare_new_moduleinfo_data($course, $modulename, $section) {
 853     global $CFG;
 854
 855     list($module, $context, $cw) = can_add_moduleinfo($course, $modulename, $section);
 856
 857     $cm = null;
 858
 859     $data = new stdClass();
 860     $data->section          = $section;  // The section number itself - relative!!! (section column in course_sections)
 861     $data->visible          = $cw->visible;
 862     $data->course           = $course->id;
 863     $data->module           = $module->id;
 864     $data->modulename       = $module->name;
 865     $data->groupmode        = $course->groupmode;
 866     $data->groupingid       = $course->defaultgroupingid;
 867     $data->id               = '';
 868     $data->instance         = '';
 869     $data->coursemodule     = '';
 870     $data->downloadcontent  = DOWNLOAD_COURSE_CONTENT_ENABLED;
 871
 872     // Apply completion defaults.
 873     $defaults = \core_completion\manager::get_default_completion($course, $module);
 874     foreach ($defaults as $key => $value) {
 875         $data->$key = $value;
 876     }
 877
 878     if (plugin_supports('mod', $data->modulename, FEATURE_MOD_INTRO, true)) {
 879         $draftid_editor = file_get_submitted_draft_itemid('introeditor');
 880         file_prepare_draft_area($draftid_editor, null, null, null, null, array('subdirs'=>true));
 881         $data->introeditor = array('text' => '', 'format' => editors_get_preferred_format(), 'itemid' => $draftid_editor);
 882     }
 883
 884     if (plugin_supports('mod', $data->modulename, FEATURE_ADVANCED_GRADING, false)
 885             and has_capability('moodle/grade:managegradingforms', $context)) {
 886         require_once($CFG->dirroot.'/grade/grading/lib.php');
 887
 888         $data->_advancedgradingdata['methods'] = grading_manager::available_methods();
 889         $areas = grading_manager::available_areas('mod_'.$module->name);
 890
 891         foreach ($areas as $areaname => $areatitle) {
 892             $data->_advancedgradingdata['areas'][$areaname] = array(
 893                 'title'  => $areatitle,
 894                 'method' => '',
 895             );
 896             $formfield = 'advancedgradingmethod_'.$areaname;
 897             $data->{$formfield} = '';
 898         }
 899     }
 900
 901     return array($module, $context, $cw, $cm, $data);
 902 }