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 $sectionreturn = optional_param('sr', 0, PARAM_INT);
  30 $add           = optional_param('add', '', PARAM_ALPHA);
  31 $type          = optional_param('type', '', PARAM_ALPHA);
  32 $indent        = optional_param('indent', 0, PARAM_INT);
  33 $update        = optional_param('update', 0, PARAM_INT);
  34 $duplicate     = optional_param('duplicate', 0, PARAM_INT);
  35 $hide          = optional_param('hide', 0, PARAM_INT);
  36 $show          = optional_param('show', 0, PARAM_INT);
  37 $copy          = optional_param('copy', 0, PARAM_INT);
  38 $moveto        = optional_param('moveto', 0, PARAM_INT);
  39 $movetosection = optional_param('movetosection', 0, PARAM_INT);
  40 $delete        = optional_param('delete', 0, PARAM_INT);
  41 $course        = optional_param('course', 0, PARAM_INT);
  42 $groupmode     = optional_param('groupmode', -1, PARAM_INT);
  43 $cancelcopy    = optional_param('cancelcopy', 0, PARAM_BOOL);
  44 $confirm       = optional_param('confirm', 0, PARAM_BOOL);
  45
  46 // This page should always redirect
  47 $url = new moodle_url('/course/mod.php');
  48 foreach (compact('indent','update','hide','show','copy','moveto','movetosection','delete','course','cancelcopy','confirm') as $key=>$value) {
  49     if ($value !== 0) {
  50         $url->param($key, $value);
  51     }
  52 }
  53 if ($sectionreturn) {
  54     $url->param('sr', $sectionreturn);
  55 }
  56 if ($add !== '') {
  57     $url->param('add', $add);
  58 }
  59 if ($type !== '') {
  60     $url->param('type', $type);
  61 }
  62 if ($groupmode !== '') {
  63     $url->param('groupmode', $groupmode);
  64 }
  65 $PAGE->set_url($url);
  66
  67 require_login();
  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     $cm = get_coursemodule_from_id('', $update, 0, true, MUST_EXIST);
  80     $returntomod = optional_param('return', 0, PARAM_BOOL);
  81     redirect("$CFG->wwwroot/course/modedit.php?update=$update&return=$returntomod");
  82
  83 } else if (!empty($duplicate)) {
  84     $cm     = get_coursemodule_from_id('', $duplicate, 0, true, MUST_EXIST);
  85     $course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
  86
  87     require_login($course, false, $cm);
  88     $coursecontext = get_context_instance(CONTEXT_COURSE, $course->id);
  89     $modcontext = get_context_instance(CONTEXT_MODULE, $cm->id);
  90     require_capability('moodle/course:manageactivities', $coursecontext);
  91
  92     if (!$confirm or !confirm_sesskey()) {
  93         $PAGE->set_title(get_string('duplicate'));
  94         $PAGE->set_heading($course->fullname);
  95         $PAGE->navbar->add(get_string('duplicatinga', 'core', format_string($cm->name)));
  96         $PAGE->set_pagelayout('incourse');
  97
  98         $a = new stdClass();
  99         $a->modtype = get_string('modulename', $cm->modname);
 100         $a->modname = format_string($cm->name);
 101         $a->modid   = $cm->id;
 102
 103         echo $OUTPUT->header();
 104         echo $OUTPUT->confirm(
 105             get_string('duplicateconfirm', 'core', $a),
 106             new single_button(
 107                 new moodle_url('/course/modduplicate.php', array('cmid' => $cm->id, 'course' => $course->id)),
 108                 get_string('continue'),
 109                 'post'),
 110             new single_button(
 111                 course_get_url($course, $sectionreturn),
 112                 get_string('cancel'),
 113                 'get')
 114         );
 115         echo $OUTPUT->footer();
 116         die();
 117     }
 118
 119 } else if (!empty($delete)) {
 120     $cm     = get_coursemodule_from_id('', $delete, 0, true, MUST_EXIST);
 121     $course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
 122
 123     require_login($course, false, $cm);
 124     $coursecontext = get_context_instance(CONTEXT_COURSE, $course->id);
 125     $modcontext = get_context_instance(CONTEXT_MODULE, $cm->id);
 126     require_capability('moodle/course:manageactivities', $modcontext);
 127
 128     $return = course_get_url($course, $sectionreturn);
 129
 130     if (!$confirm or !confirm_sesskey()) {
 131         $fullmodulename = get_string('modulename', $cm->modname);
 132
 133         $optionsyes = array('confirm'=>1, 'delete'=>$cm->id, 'sesskey'=>sesskey());
 134         $optionsno  = array('id'=>$cm->course);
 135
 136         $strdeletecheck = get_string('deletecheck', '', $fullmodulename);
 137         $strdeletecheckfull = get_string('deletecheckfull', '', "$fullmodulename '$cm->name'");
 138
 139         $PAGE->set_pagetype('mod-' . $cm->modname . '-delete');
 140         $PAGE->set_title($strdeletecheck);
 141         $PAGE->set_heading($course->fullname);
 142         $PAGE->navbar->add($strdeletecheck);
 143         echo $OUTPUT->header();
 144
 145         // print_simple_box_start('center', '60%', '#FFAAAA', 20, 'noticebox');
 146         echo $OUTPUT->box_start('noticebox');
 147         $formcontinue = new single_button(new moodle_url("$CFG->wwwroot/course/mod.php", $optionsyes), get_string('yes'));
 148         $formcancel = new single_button(new moodle_url($return, $optionsno), get_string('no'), 'get');
 149         echo $OUTPUT->confirm($strdeletecheckfull, $formcontinue, $formcancel);
 150         echo $OUTPUT->box_end();
 151         echo $OUTPUT->footer();
 152
 153         exit;
 154     }
 155
 156     $modlib = "$CFG->dirroot/mod/$cm->modname/lib.php";
 157
 158     if (file_exists($modlib)) {
 159         require_once($modlib);
 160     } else {
 161         print_error('modulemissingcode', '', '', $modlib);
 162     }
 163
 164     $deleteinstancefunction = $cm->modname."_delete_instance";
 165
 166     if (!$deleteinstancefunction($cm->instance)) {
 167         echo $OUTPUT->notification("Could not delete the $cm->modname (instance)");
 168     }
 169
 170     // remove all module files in case modules forget to do that
 171     $fs = get_file_storage();
 172     $fs->delete_area_files($modcontext->id);
 173
 174     if (!delete_course_module($cm->id)) {
 175         echo $OUTPUT->notification("Could not delete the $cm->modname (coursemodule)");
 176     }
 177     if (!delete_mod_from_section($cm->id, $cm->section)) {
 178         echo $OUTPUT->notification("Could not delete the $cm->modname from that section");
 179     }
 180
 181     // Trigger a mod_deleted event with information about this module.
 182     $eventdata = new stdClass();
 183     $eventdata->modulename = $cm->modname;
 184     $eventdata->cmid       = $cm->id;
 185     $eventdata->courseid   = $course->id;
 186     $eventdata->userid     = $USER->id;
 187     events_trigger('mod_deleted', $eventdata);
 188
 189     add_to_log($course->id, 'course', "delete mod",
 190                "view.php?id=$cm->course",
 191                "$cm->modname $cm->instance", $cm->id);
 192
 193     rebuild_course_cache($course->id);
 194
 195     redirect($return);
 196 }
 197
 198
 199 if ((!empty($movetosection) or !empty($moveto)) and confirm_sesskey()) {
 200     $cm     = get_coursemodule_from_id('', $USER->activitycopy, 0, true, MUST_EXIST);
 201     $course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
 202
 203     require_login($course, false, $cm);
 204     $coursecontext = get_context_instance(CONTEXT_COURSE, $course->id);
 205     $modcontext = get_context_instance(CONTEXT_MODULE, $cm->id);
 206     require_capability('moodle/course:manageactivities', $modcontext);
 207
 208     if (!empty($movetosection)) {
 209         if (!$section = $DB->get_record('course_sections', array('id'=>$movetosection, 'course'=>$cm->course))) {
 210             print_error('sectionnotexist');
 211         }
 212         $beforecm = NULL;
 213
 214     } else {                      // normal moveto
 215         if (!$beforecm = get_coursemodule_from_id('', $moveto, $cm->course, true)) {
 216             print_error('invalidcoursemodule');
 217         }
 218         if (!$section = $DB->get_record('course_sections', array('id'=>$beforecm->section, 'course'=>$cm->course))) {
 219             print_error('sectionnotexist');
 220         }
 221     }
 222
 223     if (!ismoving($section->course)) {
 224         print_error('needcopy', '', "view.php?id=$section->course");
 225     }
 226
 227     moveto_module($cm, $section, $beforecm);
 228
 229     unset($USER->activitycopy);
 230     unset($USER->activitycopycourse);
 231     unset($USER->activitycopyname);
 232
 233     rebuild_course_cache($section->course);
 234
 235     if (SITEID == $section->course) {
 236         redirect($CFG->wwwroot);
 237     } else {
 238         redirect(course_get_url($course, $sectionreturn));
 239     }
 240
 241 } else if (!empty($indent) and confirm_sesskey()) {
 242     $id = required_param('id', PARAM_INT);
 243
 244     $cm     = get_coursemodule_from_id('', $id, 0, true, MUST_EXIST);
 245     $course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
 246
 247     require_login($course, false, $cm);
 248     $coursecontext = get_context_instance(CONTEXT_COURSE, $course->id);
 249     $modcontext = get_context_instance(CONTEXT_MODULE, $cm->id);
 250     require_capability('moodle/course:manageactivities', $modcontext);
 251
 252     $cm->indent += $indent;
 253
 254     if ($cm->indent < 0) {
 255         $cm->indent = 0;
 256     }
 257
 258     $DB->set_field('course_modules', 'indent', $cm->indent, array('id'=>$cm->id));
 259
 260     rebuild_course_cache($cm->course);
 261
 262     if (SITEID == $cm->course) {
 263         redirect($CFG->wwwroot);
 264     } else {
 265         redirect(course_get_url($course, $sectionreturn));
 266     }
 267
 268 } else if (!empty($hide) and confirm_sesskey()) {
 269     $cm     = get_coursemodule_from_id('', $hide, 0, true, MUST_EXIST);
 270     $course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
 271
 272     require_login($course, false, $cm);
 273     $coursecontext = get_context_instance(CONTEXT_COURSE, $course->id);
 274     $modcontext = get_context_instance(CONTEXT_MODULE, $cm->id);
 275     require_capability('moodle/course:activityvisibility', $modcontext);
 276
 277     set_coursemodule_visible($cm->id, 0);
 278
 279     rebuild_course_cache($cm->course);
 280
 281     if (SITEID == $cm->course) {
 282         redirect($CFG->wwwroot);
 283     } else {
 284         redirect(course_get_url($course, $sectionreturn));
 285     }
 286
 287 } else if (!empty($show) and confirm_sesskey()) {
 288     $cm     = get_coursemodule_from_id('', $show, 0, true, MUST_EXIST);
 289     $course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
 290
 291     require_login($course, false, $cm);
 292     $coursecontext = get_context_instance(CONTEXT_COURSE, $course->id);
 293     $modcontext = get_context_instance(CONTEXT_MODULE, $cm->id);
 294     require_capability('moodle/course:activityvisibility', $modcontext);
 295
 296     $section = $DB->get_record('course_sections', array('id'=>$cm->section), '*', MUST_EXIST);
 297
 298     $module = $DB->get_record('modules', array('id'=>$cm->module), '*', MUST_EXIST);
 299
 300     if ($module->visible and ($section->visible or (SITEID == $cm->course))) {
 301         set_coursemodule_visible($cm->id, 1);
 302         rebuild_course_cache($cm->course);
 303     }
 304
 305     if (SITEID == $cm->course) {
 306         redirect($CFG->wwwroot);
 307     } else {
 308         redirect(course_get_url($course, $sectionreturn));
 309     }
 310
 311 } else if ($groupmode > -1 and confirm_sesskey()) {
 312     $id = required_param('id', PARAM_INT);
 313
 314     $cm     = get_coursemodule_from_id('', $id, 0, true, MUST_EXIST);
 315     $course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
 316
 317     require_login($course, false, $cm);
 318     $coursecontext = get_context_instance(CONTEXT_COURSE, $course->id);
 319     $modcontext = get_context_instance(CONTEXT_MODULE, $cm->id);
 320     require_capability('moodle/course:manageactivities', $modcontext);
 321
 322     set_coursemodule_groupmode($cm->id, $groupmode);
 323
 324     rebuild_course_cache($cm->course);
 325
 326     if (SITEID == $cm->course) {
 327         redirect($CFG->wwwroot);
 328     } else {
 329         redirect(course_get_url($course, $sectionreturn));
 330     }
 331
 332 } else if (!empty($copy) and confirm_sesskey()) { // value = course module
 333     $cm     = get_coursemodule_from_id('', $copy, 0, true, MUST_EXIST);
 334     $course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
 335
 336     require_login($course, false, $cm);
 337     $coursecontext = get_context_instance(CONTEXT_COURSE, $course->id);
 338     $modcontext = get_context_instance(CONTEXT_MODULE, $cm->id);
 339     require_capability('moodle/course:manageactivities', $modcontext);
 340
 341     $section = $DB->get_record('course_sections', array('id'=>$cm->section), '*', MUST_EXIST);
 342
 343     $USER->activitycopy       = $copy;
 344     $USER->activitycopycourse = $cm->course;
 345     $USER->activitycopyname   = $cm->name;
 346
 347     redirect(course_get_url($course, $sectionreturn));
 348
 349 } else if (!empty($cancelcopy) and confirm_sesskey()) { // value = course module
 350
 351     $courseid = $USER->activitycopycourse;
 352     $course = $DB->get_record('course', array('id' => $courseid), '*', MUST_EXIST);
 353
 354     unset($USER->activitycopy);
 355     unset($USER->activitycopycourse);
 356     unset($USER->activitycopyname);
 357
 358     redirect(course_get_url($course, $sectionreturn));
 359 } else {
 360     print_error('unknowaction');
 361 }
 362
 363