course/mod.php

   1 <?php
   2
   3 // This file is part of Moodle - http://moodle.org/
   4 //
   5 // Moodle is free software: you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation, either version 3 of the License, or
   8 // (at your option) any later version.
   9 //
  10 // Moodle is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License
  16 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 /**
  19  * Moves, adds, updates, duplicates or deletes modules in a course
  20  *
  21  * @copyright 1999 Martin Dougiamas  http://dougiamas.com
  22  * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  * @package course
  24  */
  25
  26 require("../config.php");
  27 require_once("lib.php");
  28
  29 require_login();
  30
  31 $sectionreturn = optional_param('sr', '', PARAM_INT);
  32 $add           = optional_param('add', '', PARAM_ALPHA);
  33 $type          = optional_param('type', '', PARAM_ALPHA);
  34 $indent        = optional_param('indent', 0, PARAM_INT);
  35 $update        = optional_param('update', 0, PARAM_INT);
  36 $duplicate     = optional_param('duplicate', 0, PARAM_INT);
  37 $hide          = optional_param('hide', 0, PARAM_INT);
  38 $show          = optional_param('show', 0, PARAM_INT);
  39 $copy          = optional_param('copy', 0, PARAM_INT);
  40 $moveto        = optional_param('moveto', 0, PARAM_INT);
  41 $movetosection = optional_param('movetosection', 0, PARAM_INT);
  42 $delete        = optional_param('delete', 0, PARAM_INT);
  43 $course        = optional_param('course', 0, PARAM_INT);
  44 $groupmode     = optional_param('groupmode', -1, PARAM_INT);
  45 $cancelcopy    = optional_param('cancelcopy', 0, PARAM_BOOL);
  46 $confirm       = optional_param('confirm', 0, PARAM_BOOL);
  47
  48 // This page should always redirect
  49 $url = new moodle_url('/course/mod.php');
  50 foreach (compact('indent','update','hide','show','copy','moveto','movetosection','delete','course','cancelcopy','confirm') as $key=>$value) {
  51     if ($value !== 0) {
  52         $url->param($key, $value);
  53     }
  54 }
  55 if ($sectionreturn !== '') {
  56     $url->param('sr', $sectionreturn);
  57 }
  58 if ($add !== '') {
  59     $url->param('add', $add);
  60 }
  61 if ($type !== '') {
  62     $url->param('type', $type);
  63 }
  64 if ($groupmode !== '') {
  65     $url->param('groupmode', $groupmode);
  66 }
  67 $PAGE->set_url($url);
  68
  69 //check if we are adding / editing a module that has new forms using formslib
  70 if (!empty($add)) {
  71     $id          = required_param('id', PARAM_INT);
  72     $section     = required_param('section', PARAM_INT);
  73     $type        = optional_param('type', '', PARAM_ALPHA);
  74     $returntomod = optional_param('return', 0, PARAM_BOOL);
  75
  76     redirect("$CFG->wwwroot/course/modedit.php?add=$add&type=$type&course=$id&section=$section&return=$returntomod");
  77
  78 } else if (!empty($update)) {
  79     if (!$cm = get_coursemodule_from_id('', $update, 0, true)) {
  80         print_error('invalidcoursemodule');
  81     }
  82     $returntomod = optional_param('return', 0, PARAM_BOOL);
  83     redirect("$CFG->wwwroot/course/modedit.php?update=$update&return=$returntomod");
  84
  85 } else if (!empty($duplicate)) {
  86     $cm     = get_coursemodule_from_id('', $duplicate, 0, true, MUST_EXIST);
  87     $course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
  88
  89     require_login($course->id);
  90     $coursecontext = get_context_instance(CONTEXT_COURSE, $course->id);
  91     $modcontext = get_context_instance(CONTEXT_MODULE, $cm->id);
  92     require_capability('moodle/course:manageactivities', $coursecontext);
  93
  94     if (!$confirm or !confirm_sesskey()) {
  95         $PAGE->set_title(get_string('duplicate'));
  96         $PAGE->set_heading($course->fullname);
  97         $PAGE->navbar->add(get_string('duplicatinga', 'core', format_string($cm->name)));
  98         $PAGE->set_pagelayout('incourse');
  99
 100         $a = new stdClass();
 101         $a->modtype = get_string('modulename', $cm->modname);
 102         $a->modname = format_string($cm->name);
 103         $a->modid   = $cm->id;
 104
 105         echo $OUTPUT->header();
 106         echo $OUTPUT->confirm(
 107             get_string('duplicateconfirm', 'core', $a),
 108             new single_button(
 109                 new moodle_url('/course/modduplicate.php', array('cmid' => $cm->id, 'course' => $course->id)),
 110                 get_string('continue'),
 111                 'post'),
 112             new single_button(
 113                 new moodle_url('/course/view.php#section-' . $cm->sectionnum, array('id' => $cm->course)),
 114                 get_string('cancel'),
 115                 'get')
 116         );
 117         echo $OUTPUT->footer();
 118         die();
 119     }
 120
 121 } else if (!empty($delete)) {
 122     if (!$cm = get_coursemodule_from_id('', $delete, 0, true)) {
 123         print_error('invalidcoursemodule');
 124     }
 125
 126     if (!$course = $DB->get_record('course', array('id'=>$cm->course))) {
 127         print_error('invalidcourseid');
 128     }
 129     require_login($course->id); // needed to setup proper $COURSE
 130     $context = get_context_instance(CONTEXT_COURSE, $course->id);
 131     $modcontext = get_context_instance(CONTEXT_MODULE, $cm->id);
 132     require_capability('moodle/course:manageactivities', $context);
 133
 134     $return = "$CFG->wwwroot/course/view.php?id=$cm->course#section-$cm->sectionnum";
 135
 136     if (!$confirm or !confirm_sesskey()) {
 137         $fullmodulename = get_string('modulename', $cm->modname);
 138
 139         $optionsyes = array('confirm'=>1, 'delete'=>$cm->id, 'sesskey'=>sesskey());
 140         $optionsno  = array('id'=>$cm->course);
 141
 142         $strdeletecheck = get_string('deletecheck', '', $fullmodulename);
 143         $strdeletecheckfull = get_string('deletecheckfull', '', "$fullmodulename '$cm->name'");
 144
 145         $PAGE->set_pagetype('mod-' . $cm->modname . '-delete');
 146         $PAGE->set_title($strdeletecheck);
 147         $PAGE->set_heading($course->fullname);
 148         $PAGE->navbar->add($strdeletecheck);
 149         echo $OUTPUT->header();
 150
 151         // print_simple_box_start('center', '60%', '#FFAAAA', 20, 'noticebox');
 152         echo $OUTPUT->box_start('noticebox');
 153         $formcontinue = new single_button(new moodle_url("$CFG->wwwroot/course/mod.php", $optionsyes), get_string('yes'));
 154         $formcancel = new single_button(new moodle_url($return, $optionsno), get_string('no'), 'get');
 155         echo $OUTPUT->confirm($strdeletecheckfull, $formcontinue, $formcancel);
 156         echo $OUTPUT->box_end();
 157         echo $OUTPUT->footer();
 158
 159         exit;
 160     }
 161
 162     $modlib = "$CFG->dirroot/mod/$cm->modname/lib.php";
 163
 164     if (file_exists($modlib)) {
 165         require_once($modlib);
 166     } else {
 167         print_error('modulemissingcode', '', '', $modlib);
 168     }
 169
 170     $deleteinstancefunction = $cm->modname."_delete_instance";
 171
 172     if (!$deleteinstancefunction($cm->instance)) {
 173         echo $OUTPUT->notification("Could not delete the $cm->modname (instance)");
 174     }
 175
 176     // remove all module files in case modules forget to do that
 177     $fs = get_file_storage();
 178     $fs->delete_area_files($modcontext->id);
 179
 180     if (!delete_course_module($cm->id)) {
 181         echo $OUTPUT->notification("Could not delete the $cm->modname (coursemodule)");
 182     }
 183     if (!delete_mod_from_section($cm->id, $cm->section)) {
 184         echo $OUTPUT->notification("Could not delete the $cm->modname from that section");
 185     }
 186
 187     // Trigger a mod_deleted event with information about this module.
 188     $eventdata = new stdClass();
 189     $eventdata->modulename = $cm->modname;
 190     $eventdata->cmid       = $cm->id;
 191     $eventdata->courseid   = $course->id;
 192     $eventdata->userid     = $USER->id;
 193     events_trigger('mod_deleted', $eventdata);
 194
 195     add_to_log($course->id, 'course', "delete mod",
 196                "view.php?id=$cm->course",
 197                "$cm->modname $cm->instance", $cm->id);
 198
 199     rebuild_course_cache($course->id);
 200
 201     redirect($return);
 202 }
 203
 204
 205 if ((!empty($movetosection) or !empty($moveto)) and confirm_sesskey()) {
 206     if (!$cm = get_coursemodule_from_id('', $USER->activitycopy, 0, true)) {
 207         print_error('invalidcoursemodule');
 208     }
 209
 210     if (!empty($movetosection)) {
 211         if (!$section = $DB->get_record('course_sections', array('id'=>$movetosection, 'course'=>$cm->course))) {
 212             print_error('sectionnotexist');
 213         }
 214         $beforecm = NULL;
 215
 216     } else {                      // normal moveto
 217         if (!$beforecm = get_coursemodule_from_id('', $moveto, $cm->course, true)) {
 218             print_error('invalidcoursemodule');
 219         }
 220         if (!$section = $DB->get_record('course_sections', array('id'=>$beforecm->section, 'course'=>$cm->course))) {
 221             print_error('sectionnotexist');
 222         }
 223     }
 224
 225     require_login($section->course); // needed to setup proper $COURSE
 226     $context = get_context_instance(CONTEXT_COURSE, $section->course);
 227     require_capability('moodle/course:manageactivities', $context);
 228
 229     if (!ismoving($section->course)) {
 230         print_error('needcopy', '', "view.php?id=$section->course");
 231     }
 232
 233     moveto_module($cm, $section, $beforecm);
 234
 235     unset($USER->activitycopy);
 236     unset($USER->activitycopycourse);
 237     unset($USER->activitycopyname);
 238
 239     rebuild_course_cache($section->course);
 240
 241     if (SITEID == $section->course) {
 242         redirect($CFG->wwwroot);
 243     } else {
 244         redirect("view.php?id=$section->course#section-$sectionreturn");
 245     }
 246
 247 } else if (!empty($indent) and confirm_sesskey()) {
 248     $id = required_param('id', PARAM_INT);
 249     if (!$cm = get_coursemodule_from_id('', $id, 0, true)) {
 250         print_error('invalidcoursemodule');
 251     }
 252
 253     require_login($cm->course); // needed to setup proper $COURSE
 254     $context = get_context_instance(CONTEXT_COURSE, $cm->course);
 255     require_capability('moodle/course:manageactivities', $context);
 256
 257     $cm->indent += $indent;
 258
 259     if ($cm->indent < 0) {
 260         $cm->indent = 0;
 261     }
 262
 263     $DB->set_field('course_modules', 'indent', $cm->indent, array('id'=>$cm->id));
 264
 265     rebuild_course_cache($cm->course);
 266
 267     if (SITEID == $cm->course) {
 268         redirect($CFG->wwwroot);
 269     } else {
 270         redirect("view.php?id=$cm->course#section-$cm->sectionnum");
 271     }
 272
 273 } else if (!empty($hide) and confirm_sesskey()) {
 274     if (!$cm = get_coursemodule_from_id('', $hide, 0, true)) {
 275         print_error('invalidcoursemodule');
 276     }
 277
 278     require_login($cm->course); // needed to setup proper $COURSE
 279     $context = get_context_instance(CONTEXT_MODULE, $cm->id);
 280     require_capability('moodle/course:activityvisibility', $context);
 281
 282     set_coursemodule_visible($cm->id, 0);
 283
 284     rebuild_course_cache($cm->course);
 285
 286     if (SITEID == $cm->course) {
 287         redirect($CFG->wwwroot);
 288     } else {
 289         redirect("view.php?id=$cm->course#section-$cm->sectionnum");
 290     }
 291
 292 } else if (!empty($show) and confirm_sesskey()) {
 293     if (!$cm = get_coursemodule_from_id('', $show, 0, true)) {
 294         print_error('invalidcoursemodule');
 295     }
 296
 297     require_login($cm->course); // needed to setup proper $COURSE
 298     $context = get_context_instance(CONTEXT_COURSE, $cm->course);
 299     require_capability('moodle/course:activityvisibility', $context);
 300
 301     if (!$section = $DB->get_record('course_sections', array('id'=>$cm->section))) {
 302         print_error('sectionnotexist');
 303     }
 304
 305     if (!$module = $DB->get_record('modules', array('id'=>$cm->module))) {
 306         print_error('moduledoesnotexist');
 307     }
 308
 309     if ($module->visible and ($section->visible or (SITEID == $cm->course))) {
 310         set_coursemodule_visible($cm->id, 1);
 311         rebuild_course_cache($cm->course);
 312     }
 313
 314     if (SITEID == $cm->course) {
 315         redirect($CFG->wwwroot);
 316     } else {
 317         redirect("view.php?id=$cm->course#section-$cm->sectionnum");
 318     }
 319
 320 } else if ($groupmode > -1 and confirm_sesskey()) {
 321     $id = required_param('id', PARAM_INT);
 322     if (!$cm = get_coursemodule_from_id('', $id, 0, true)) {
 323         print_error('invalidcoursemodule');
 324     }
 325
 326     require_login($cm->course); // needed to setup proper $COURSE
 327     $context = get_context_instance(CONTEXT_MODULE, $cm->id);
 328     require_capability('moodle/course:manageactivities', $context);
 329
 330     set_coursemodule_groupmode($cm->id, $groupmode);
 331
 332     rebuild_course_cache($cm->course);
 333
 334     if (SITEID == $cm->course) {
 335         redirect($CFG->wwwroot);
 336     } else {
 337         redirect("view.php?id=$cm->course#section-$cm->sectionnum");
 338     }
 339
 340 } else if (!empty($copy) and confirm_sesskey()) { // value = course module
 341     if (!$cm = get_coursemodule_from_id('', $copy, 0, true)) {
 342         print_error('invalidcoursemodule');
 343     }
 344
 345     require_login($cm->course); // needed to setup proper $COURSE
 346     $context = get_context_instance(CONTEXT_COURSE, $cm->course);
 347     require_capability('moodle/course:manageactivities', $context);
 348
 349     if (!$section = $DB->get_record('course_sections', array('id'=>$cm->section))) {
 350         print_error('sectionnotexist');
 351     }
 352
 353     $USER->activitycopy       = $copy;
 354     $USER->activitycopycourse = $cm->course;
 355     $USER->activitycopyname   = $cm->name;
 356
 357     redirect("view.php?id=$cm->course#section-$sectionreturn");
 358
 359 } else if (!empty($cancelcopy) and confirm_sesskey()) { // value = course module
 360
 361     $courseid = $USER->activitycopycourse;
 362
 363     unset($USER->activitycopy);
 364     unset($USER->activitycopycourse);
 365     unset($USER->activitycopyname);
 366
 367     redirect("view.php?id=$courseid");
 368
 369 } else {
 370     print_error('unknowaction');
 371 }
 372
 373