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mod.php
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mod.php
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<?php // $Id$
// Moves, adds, updates, duplicates or deletes modules in a course
require("../config.php");
require_once("lib.php");
require_login();
$sectionreturn = optional_param('sr', '', PARAM_INT);
$add = optional_param('add','', PARAM_ALPHA);
$type = optional_param('type', '', PARAM_ALPHA);
$indent = optional_param('indent', 0, PARAM_INT);
$update = optional_param('update', 0, PARAM_INT);
$hide = optional_param('hide', 0, PARAM_INT);
$show = optional_param('show', 0, PARAM_INT);
$copy = optional_param('copy', 0, PARAM_INT);
$moveto = optional_param('moveto', 0, PARAM_INT);
$movetosection = optional_param('movetosection', 0, PARAM_INT);
$delete = optional_param('delete', 0, PARAM_INT);
$course = optional_param('course', 0, PARAM_INT);
$groupmode = optional_param('groupmode', -1, PARAM_INT);
$duplicate = optional_param('duplicate', 0, PARAM_INT);
$cancel = optional_param('cancel', 0, PARAM_BOOL);
$cancelcopy = optional_param('cancelcopy', 0, PARAM_BOOL);
if (isset($SESSION->modform)) { // Variables are stored in the session
$mod = $SESSION->modform;
unset($SESSION->modform);
} else {
$mod = (object)$_POST;
}
if ($cancel) {
if (!empty($SESSION->returnpage)) {
$return = $SESSION->returnpage;
unset($SESSION->returnpage);
redirect($return);
} else {
redirect("view.php?id=$mod->course#section-$sectionreturn");
}
}
//check if we are adding / editing a module that has new forms using formslib
if (!empty($add)){
$modname=$add;
if (file_exists("../mod/$modname/mod_form.php")) {
$id = required_param('id', PARAM_INT);
$section = required_param('section', PARAM_INT);
$type = optional_param('type', '', PARAM_ALPHA);
$returntomod = optional_param('return', 0, PARAM_BOOL);
redirect("modedit.php?add=$add&type=$type&course=$id§ion=$section&return=$returntomod");
}
}elseif (!empty($update)){
if (!$modname=get_field_sql("SELECT md.name
FROM {$CFG->prefix}course_modules cm,
{$CFG->prefix}modules md
WHERE cm.id = '$update' AND
md.id = cm.module")){
error('Invalid course module id!');
}
$returntomod = optional_param('return', 0, PARAM_BOOL);
if (file_exists("../mod/$modname/mod_form.php")) {
redirect("modedit.php?update=$update&return=$returntomod");
}
}
//not adding / editing a module that has new forms using formslib
//carry on
if (!empty($course) and confirm_sesskey()) { // add, delete or update form submitted
if (empty($mod->coursemodule)) { //add
if (! $course = get_record("course", "id", $mod->course)) {
error("This course doesn't exist");
}
$mod->instance = '';
$mod->coursemodule = '';
} else { //delete and update
if (! $cm = get_record("course_modules", "id", $mod->coursemodule)) {
error("This course module doesn't exist");
}
if (! $course = get_record("course", "id", $cm->course)) {
error("This course doesn't exist");
}
$mod->instance = $cm->instance;
$mod->coursemodule = $cm->id;
}
require_login($course->id); // needed to setup proper $COURSE
$context = get_context_instance(CONTEXT_COURSE, $course->id);
require_capability('moodle/course:manageactivities', $context);
$mod->course = $course->id;
$mod->modulename = clean_param($mod->modulename, PARAM_SAFEDIR); // For safety
$modlib = "$CFG->dirroot/mod/$mod->modulename/lib.php";
if (file_exists($modlib)) {
include_once($modlib);
} else {
error("This module is missing important code! ($modlib)");
}
$addinstancefunction = $mod->modulename."_add_instance";
$updateinstancefunction = $mod->modulename."_update_instance";
$deleteinstancefunction = $mod->modulename."_delete_instance";
$moderr = "$CFG->dirroot/mod/$mod->modulename/moderr.html";
switch ($mod->mode) {
case "update":
if (isset($mod->name)) {
if (trim($mod->name) == '') {
unset($mod->name);
}
}
$return = $updateinstancefunction($mod);
if (!$return) {
if (file_exists($moderr)) {
$form = $mod;
include_once($moderr);
die;
}
error("Could not update the $mod->modulename", "view.php?id=$course->id");
}
if (is_string($return)) {
error($return, "view.php?id=$course->id");
}
if (isset($mod->visible)) {
set_coursemodule_visible($mod->coursemodule, $mod->visible);
}
if (isset($mod->groupmode)) {
set_coursemodule_groupmode($mod->coursemodule, $mod->groupmode);
}
if (isset($mod->redirect)) {
$SESSION->returnpage = $mod->redirecturl;
} else {
$SESSION->returnpage = "$CFG->wwwroot/mod/$mod->modulename/view.php?id=$mod->coursemodule";
}
add_to_log($course->id, "course", "update mod",
"../mod/$mod->modulename/view.php?id=$mod->coursemodule",
"$mod->modulename $mod->instance");
add_to_log($course->id, $mod->modulename, "update",
"view.php?id=$mod->coursemodule",
"$mod->instance", $mod->coursemodule);
break;
case "add":
if (!course_allowed_module($course,$mod->modulename)) {
error("This module ($mod->modulename) has been disabled for this particular course");
}
if (!isset($mod->name) || trim($mod->name) == '') {
$mod->name = get_string("modulename", $mod->modulename);
}
$return = $addinstancefunction($mod);
if (!$return) {
if (file_exists($moderr)) {
$form = $mod;
include_once($moderr);
die;
}
error("Could not add a new instance of $mod->modulename", "view.php?id=$course->id");
}
if (is_string($return)) {
error($return, "view.php?id=$course->id");
}
if (!isset($mod->groupmode)) { // to deal with pre-1.5 modules
$mod->groupmode = $course->groupmode; /// Default groupmode the same as course
}
$mod->instance = $return;
// course_modules and course_sections each contain a reference
// to each other, so we have to update one of them twice.
if (! $mod->coursemodule = add_course_module($mod) ) {
error("Could not add a new course module");
}
if (! $sectionid = add_mod_to_section($mod) ) {
error("Could not add the new course module to that section");
}
if (! set_field("course_modules", "section", $sectionid, "id", $mod->coursemodule)) {
error("Could not update the course module with the correct section");
}
if (!isset($mod->visible)) { // We get the section's visible field status
$mod->visible = get_field("course_sections","visible","id",$sectionid);
}
// make sure visibility is set correctly (in particular in calendar)
set_coursemodule_visible($mod->coursemodule, $mod->visible);
if (isset($mod->redirect)) {
$SESSION->returnpage = $mod->redirecturl;
} else {
$SESSION->returnpage = "$CFG->wwwroot/mod/$mod->modulename/view.php?id=$mod->coursemodule";
}
add_to_log($course->id, "course", "add mod",
"../mod/$mod->modulename/view.php?id=$mod->coursemodule",
"$mod->modulename $mod->instance");
add_to_log($course->id, $mod->modulename, "add",
"view.php?id=$mod->coursemodule",
"$mod->instance", $mod->coursemodule);
break;
case "delete":
if (! $deleteinstancefunction($mod->instance)) {
notify("Could not delete the $mod->modulename (instance)");
}
if (! delete_course_module($mod->coursemodule)) {
notify("Could not delete the $mod->modulename (coursemodule)");
}
if (! delete_mod_from_section($mod->coursemodule, "$mod->section")) {
notify("Could not delete the $mod->modulename from that section");
}
unset($SESSION->returnpage);
add_to_log($course->id, "course", "delete mod",
"view.php?id=$mod->course",
"$mod->modulename $mod->instance", $mod->coursemodule);
break;
default:
error("No mode defined");
}
rebuild_course_cache($course->id);
if (!empty($SESSION->returnpage)) {
$return = $SESSION->returnpage;
unset($SESSION->returnpage);
redirect($return);
} else {
redirect("view.php?id=$course->id#section-$sectionreturn");
}
exit;
}
if ((!empty($movetosection) or !empty($moveto)) and confirm_sesskey()) {
if (! $cm = get_record("course_modules", "id", $USER->activitycopy)) {
error("The copied course module doesn't exist!");
}
if (!empty($movetosection)) {
if (! $section = get_record("course_sections", "id", $movetosection)) {
error("This section doesn't exist");
}
$beforecm = NULL;
} else { // normal moveto
if (! $beforecm = get_record("course_modules", "id", $moveto)) {
error("The destination course module doesn't exist");
}
if (! $section = get_record("course_sections", "id", $beforecm->section)) {
error("This section doesn't exist");
}
}
require_login($section->course); // needed to setup proper $COURSE
$context = get_context_instance(CONTEXT_COURSE, $section->course);
require_capability('moodle/course:manageactivities', $context);
if (!ismoving($section->course)) {
error("You need to copy something first!");
}
moveto_module($cm, $section, $beforecm);
unset($USER->activitycopy);
unset($USER->activitycopycourse);
unset($USER->activitycopyname);
rebuild_course_cache($section->course);
if (SITEID == $section->course) {
redirect($CFG->wwwroot);
} else {
redirect("view.php?id=$section->course#section-$sectionreturn");
}
} else if (!empty($indent) and confirm_sesskey()) {
$id = required_param('id',PARAM_INT);
if (! $cm = get_record("course_modules", "id", $id)) {
error("This course module doesn't exist");
}
require_login($cm->course); // needed to setup proper $COURSE
$context = get_context_instance(CONTEXT_COURSE, $cm->course);
require_capability('moodle/course:manageactivities', $context);
$cm->indent += $indent;
if ($cm->indent < 0) {
$cm->indent = 0;
}
if (!set_field("course_modules", "indent", $cm->indent, "id", $cm->id)) {
error("Could not update the indent level on that course module");
}
if (SITEID == $cm->course) {
redirect($CFG->wwwroot);
} else {
redirect("view.php?id=$cm->course#section-$sectionreturn");
}
exit;
} else if (!empty($hide) and confirm_sesskey()) {
if (! $cm = get_record("course_modules", "id", $hide)) {
error("This course module doesn't exist");
}
require_login($cm->course); // needed to setup proper $COURSE
$context = get_context_instance(CONTEXT_MODULE, $cm->id);
require_capability('moodle/course:activityvisibility', $context);
set_coursemodule_visible($cm->id, 0);
rebuild_course_cache($cm->course);
if (SITEID == $cm->course) {
redirect($CFG->wwwroot);
} else {
redirect("view.php?id=$cm->course#section-$sectionreturn");
}
exit;
} else if (!empty($show) and confirm_sesskey()) {
if (! $cm = get_record("course_modules", "id", $show)) {
error("This course module doesn't exist");
}
require_login($cm->course); // needed to setup proper $COURSE
$context = get_context_instance(CONTEXT_COURSE, $cm->course);
require_capability('moodle/course:activityvisibility', $context);
if (! $section = get_record("course_sections", "id", $cm->section)) {
error("This module doesn't exist");
}
if (! $module = get_record("modules", "id", $cm->module)) {
error("This module doesn't exist");
}
if ($module->visible and ($section->visible or (SITEID == $cm->course))) {
set_coursemodule_visible($cm->id, 1);
rebuild_course_cache($cm->course);
}
if (SITEID == $cm->course) {
redirect($CFG->wwwroot);
} else {
redirect("view.php?id=$cm->course#section-$sectionreturn");
}
exit;
} else if ($groupmode > -1 and confirm_sesskey()) {
$id = required_param( 'id', PARAM_INT );
if (! $cm = get_record("course_modules", "id", $id)) {
error("This course module doesn't exist");
}
require_login($cm->course); // needed to setup proper $COURSE
$context = get_context_instance(CONTEXT_MODULE, $cm->id);
require_capability('moodle/course:manageactivities', $context);
set_coursemodule_groupmode($cm->id, $groupmode);
rebuild_course_cache($cm->course);
if (SITEID == $cm->course) {
redirect($CFG->wwwroot);
} else {
redirect("view.php?id=$cm->course#section-$sectionreturn");
}
exit;
} else if (!empty($copy) and confirm_sesskey()) { // value = course module
if (! $cm = get_record("course_modules", "id", $copy)) {
error("This course module doesn't exist");
}
require_login($cm->course); // needed to setup proper $COURSE
$context = get_context_instance(CONTEXT_COURSE, $cm->course);
require_capability('moodle/course:manageactivities', $context);
if (! $section = get_record("course_sections", "id", $cm->section)) {
error("This module doesn't exist");
}
if (! $module = get_record("modules", "id", $cm->module)) {
error("This module doesn't exist");
}
if (! $instance = get_record($module->name, "id", $cm->instance)) {
error("Could not find the instance of this module");
}
$USER->activitycopy = $copy;
$USER->activitycopycourse = $cm->course;
$USER->activitycopyname = $instance->name;
redirect("view.php?id=$cm->course#section-$sectionreturn");
} else if (!empty($cancelcopy) and confirm_sesskey()) { // value = course module
$courseid = $USER->activitycopycourse;
unset($USER->activitycopy);
unset($USER->activitycopycourse);
unset($USER->activitycopyname);
redirect("view.php?id=$courseid#section-$sectionreturn");
} else if (!empty($delete) and confirm_sesskey()) { // value = course module
if (! $cm = get_record("course_modules", "id", $delete)) {
error("This course module doesn't exist");
}
if (! $course = get_record("course", "id", $cm->course)) {
error("This course doesn't exist");
}
require_login($cm->course); // needed to setup proper $COURSE
$context = get_context_instance(CONTEXT_COURSE, $cm->course);
require_capability('moodle/course:manageactivities', $context);
if (! $module = get_record("modules", "id", $cm->module)) {
error("This module doesn't exist");
}
if (! $instance = get_record($module->name, "id", $cm->instance)) {
// Delete this module from the course right away
if (! delete_mod_from_section($cm->id, $cm->section)) {
notify("Could not delete the $module->name from that section");
}
if (! delete_course_module($cm->id)) {
notify("Could not delete the $module->name (coursemodule)");
}
error("The required instance of this module didn't exist. Module deleted.",
"$CFG->wwwroot/course/view.php?id=$course->id");
}
$fullmodulename = get_string("modulename", $module->name);
$form->coursemodule = $cm->id;
$form->section = $cm->section;
$form->course = $cm->course;
$form->instance = $cm->instance;
$form->modulename = $module->name;
$form->fullmodulename = $fullmodulename;
$form->instancename = $instance->name;
$form->sesskey = !empty($USER->id) ? $USER->sesskey : '';
$strdeletecheck = get_string('deletecheck', '', $form->fullmodulename);
$strdeletecheckfull = get_string('deletecheckfull', '', "$form->fullmodulename '$form->instancename'");
$CFG->pagepath = 'mod/'.$module->name.'/delete';
print_header_simple($strdeletecheck, '', $strdeletecheck);
print_simple_box_start('center', '60%', '#FFAAAA', 20, 'noticebox');
print_heading($strdeletecheckfull);
include_once('mod_delete.html');
print_simple_box_end();
print_footer($course);
exit;
} else if (!empty($update) and confirm_sesskey()) { // value = course module
if (! $cm = get_record("course_modules", "id", $update)) {
error("This course module doesn't exist");
}
if (! $course = get_record("course", "id", $cm->course)) {
error("This course doesn't exist");
}
require_login($course->id); // needed to setup proper $COURSE
$context = get_context_instance(CONTEXT_COURSE, $course->id);
require_capability('moodle/course:manageactivities', $context);
if (! $module = get_record("modules", "id", $cm->module)) {
error("This module doesn't exist");
}
if (! $form = get_record($module->name, "id", $cm->instance)) {
error("The required instance of this module doesn't exist");
}
if (! $cw = get_record("course_sections", "id", $cm->section)) {
error("This course section doesn't exist");
}
if (isset($return)) {
$SESSION->returnpage = "$CFG->wwwroot/mod/$module->name/view.php?id=$cm->id";
}
$form->coursemodule = $cm->id;
$form->section = $cm->section; // The section ID
$form->course = $course->id;
$form->module = $module->id;
$form->modulename = $module->name;
$form->instance = $cm->instance;
$form->mode = "update";
$form->sesskey = !empty($USER->id) ? $USER->sesskey : '';
$sectionname = get_section_name($course->format);
$fullmodulename = get_string("modulename", $module->name);
if ($form->section && $course->format != 'site') {
$heading->what = $fullmodulename;
$heading->in = "$sectionname $cw->section";
$pageheading = get_string("updatingain", "moodle", $heading);
} else {
$pageheading = get_string("updatinga", "moodle", $fullmodulename);
}
$strnav = "<a href=\"$CFG->wwwroot/mod/$module->name/view.php?id=$cm->id\">".format_string($form->name,true)."</a> ->";
if ($module->name == 'resource') {
$CFG->pagepath = 'mod/'.$module->name.'/'.$form->type;
} else {
$CFG->pagepath = 'mod/'.$module->name.'/mod';
}
} else if (!empty($duplicate) and confirm_sesskey()) { // value = course module
if (! $cm = get_record("course_modules", "id", $duplicate)) {
error("This course module doesn't exist");
}
if (! $course = get_record("course", "id", $cm->course)) {
error("This course doesn't exist");
}
require_login($course->id); // needed to setup proper $COURSE
$context = get_context_instance(CONTEXT_COURSE, $course->id);
require_capability('moodle/course:manageactivities', $context);
if (! $module = get_record("modules", "id", $cm->module)) {
error("This module doesn't exist");
}
if (! $form = get_record($module->name, "id", $cm->instance)) {
error("The required instance of this module doesn't exist");
}
if (! $cw = get_record("course_sections", "id", $cm->section)) {
error("This course section doesn't exist");
}
if (isset($return)) {
$SESSION->returnpage = "$CFG->wwwroot/mod/$module->name/view.php?id=$cm->id";
}
$section = get_field('course_sections', 'section', 'id', $cm->section);
$form->coursemodule = $cm->id;
$form->section = $section; // The section ID
$form->course = $course->id;
$form->module = $module->id;
$form->modulename = $module->name;
$form->instance = $cm->instance;
$form->mode = "add";
$form->sesskey = !empty($USER->id) ? $USER->sesskey : '';
$sectionname = get_string("name$course->format");
$fullmodulename = get_string("modulename", $module->name);
if ($form->section) {
$heading->what = $fullmodulename;
$heading->in = "$sectionname $cw->section";
$pageheading = get_string("duplicatingain", "moodle", $heading);
} else {
$pageheading = get_string("duplicatinga", "moodle", $fullmodulename);
}
$strnav = "<a href=\"$CFG->wwwroot/mod/$module->name/view.php?id=$cm->id\">$form->name</a> ->";
$CFG->pagepath = 'mod/'.$module->name.'/mod';
} else if (!empty($add) and confirm_sesskey()) {
$id = required_param('id',PARAM_INT);
$section = required_param('section',PARAM_INT);
if (! $course = get_record("course", "id", $id)) {
error("This course doesn't exist");
}
if (! $module = get_record("modules", "name", $add)) {
error("This module type doesn't exist");
}
$context = get_context_instance(CONTEXT_COURSE, $course->id);
require_capability('moodle/course:manageactivities', $context);
if (!course_allowed_module($course,$module->id)) {
error("This module has been disabled for this particular course");
}
require_login($course->id); // needed to setup proper $COURSE
$form->section = $section; // The section number itself
$form->course = $course->id;
$form->module = $module->id;
$form->modulename = $module->name;
$form->instance = "";
$form->coursemodule = "";
$form->mode = "add";
$form->sesskey = !empty($USER->id) ? $USER->sesskey : '';
if (!empty($type)) {
$form->type = $type;
}
$sectionname = get_string("name$course->format");
$fullmodulename = get_string("modulename", $module->name);
if ($form->section && $course->format != 'site') {
$heading->what = $fullmodulename;
$heading->to = "$sectionname $form->section";
$pageheading = get_string("addinganewto", "moodle", $heading);
} else {
$pageheading = get_string("addinganew", "moodle", $fullmodulename);
}
$CFG->pagepath = 'mod/'.$module->name;
if (!empty($type)) {
$CFG->pagepath .= '/' . $type;
}
else {
$CFG->pagepath .= '/mod';
}
} else {
error("No action was specfied");
}
require_login($course->id); // needed to setup proper $COURSE
$context = get_context_instance(CONTEXT_COURSE, $course->id);
require_capability('moodle/course:manageactivities', $context);
$streditinga = get_string("editinga", "moodle", $fullmodulename);
$strmodulenameplural = get_string("modulenameplural", $module->name);
if ($module->name == "label") {
$focuscursor = "form.content";
} else {
$focuscursor = "form.name";
}
$crumbs[] = array('name' => $strmodulenameplural, 'link' => "$CFG->wwwroot/mod/$module->name/index.php?id=$course->id", 'type' => 'activity');
$crumbs[] = array('name' => $streditinga, 'link' => '', 'type' => 'action');
$navigation = build_navigation($crumbs, $course);
print_header_simple($streditinga, '', $navigation, $focuscursor, "", false);
if (!empty($cm->id)) {
$context = get_context_instance(CONTEXT_MODULE, $cm->id);
$currenttab = 'update';
include_once($CFG->dirroot.'/'.$CFG->admin.'/roles/tabs.php');
}
unset($SESSION->modform); // Clear any old ones that may be hanging around.
$modform = "../mod/$module->name/mod.html";
if (file_exists($modform)) {
if ($usehtmleditor = can_use_html_editor()) {
$defaultformat = FORMAT_HTML;
$editorfields = '';
} else {
$defaultformat = FORMAT_MOODLE;
}
$icon = '<img class="icon" src="'.$CFG->modpixpath.'/'.$module->name.'/icon.gif" alt="'.get_string('modulename',$module->name).'"/>';
print_heading_with_help($pageheading, "mods", $module->name, $icon);
print_simple_box_start('center', '', '', 5, 'generalbox', $module->name);
include_once($modform);
print_simple_box_end();
if ($usehtmleditor and empty($nohtmleditorneeded)) {
use_html_editor($editorfields);
}
} else {
notice("This module cannot be added to this course yet! (No file found at: $modform)", "$CFG->wwwroot/course/view.php?id=$course->id");
}
print_footer($course);
?>