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