function xmldb_block_demostudent_upgrade($oldversion = 0)
{
global $CFG;
$result = true;
// Assign moodle/course:viewhiddencourses capability to demostudent role.
if ($oldversion < 2013100201) {
if (get_capability_info('moodle/course:viewhiddencourses')) {
$demostudentroleid = get_roleid_by_roleshortname('demostudent');
assign_capability('moodle/course:viewhiddencourses', CAP_ALLOW, $demostudentroleid, 1);
}
upgrade_plugin_savepoint(true, 2013100201, 'block', 'demostudent');
}
return $result;
}
private function render_view($viewrole = 'demostudent')
{
global $CFG, $COURSE, $USER, $OUTPUT;
$this->content->text = '';
// If the demostudent role is missing from the system, give a warning.
$demostudentroleid = get_roleid_by_roleshortname('demostudent');
if (!$demostudentroleid) {
// Test this by changing mdl_role.shortname from 'demostudent' to 'demostudent2' in the DB.
$this->content->text .= get_string('warningmissingrole', 'block_demostudent');
}
// If the course is not available to students, give a warning to everyone who sees the block.
if (!$COURSE->visible) {
$this->content->text .= get_string('warningcoursenotvisible', 'block_demostudent');
}
$this->content->text .= get_string('viewis' . $viewrole, 'block_demostudent');
$buttontext = get_string('buttonfor' . $viewrole, 'block_demostudent');
$buttontooltip = get_string('switchfrom' . $viewrole . 'view', 'block_demostudent');
$buttonunenroltext = get_string('buttonforunenrol', 'block_demostudent');
$buttonunenroltooltip = get_string('unenroltip', 'block_demostudent');
$this->content->text .= '<div class="searchform">';
$this->content->text .= '<form action="' . $CFG->wwwroot . '/blocks/demostudent/switchview.php" style="display:inline"><fieldset class="invisiblefieldset">';
$this->content->text .= '<legend class="accesshide">' . $buttontooltip . '</legend>';
$this->content->text .= '<input name="url" type="hidden" value="' . $this->page->url . '" />';
$this->content->text .= '<input name="viewrole" type="hidden" value="' . $viewrole . '" />';
$this->content->text .= '<input name="courseid" type="hidden" value="' . $this->page->course->id . '" />';
$this->content->text .= '<input name="sesskey" type="hidden" value="' . $USER->sesskey . '" />';
$this->content->text .= '<button id="switchview_button" type="submit" title="' . $buttontooltip . '">' . $buttontext . '</button><br />';
// Somebody add some help here: $this->content->text .= $OUTPUT->help_icon('demostudent'); !
$this->content->text .= '</fieldset></form>';
$this->content->text .= '</div>';
$this->content->text .= get_string('advicefor' . $viewrole, 'block_demostudent');
if ($viewrole == 'demostudent' && $this->ismoonfull()) {
$this->content->text .= get_string('advicetwowindows', 'block_demostudent');
}
if ($viewrole == 'instructor') {
// Need to allow the instructor to unenrol the demo student, add another form.
$this->content->text .= '<div class="searchform">';
$this->content->text .= '<form action="' . $CFG->wwwroot . '/blocks/demostudent/remove.php" style="display:inline">';
$this->content->text .= '<fieldset class="invisiblefieldset">';
$this->content->text .= '<input name="viewrole" type="hidden" value="' . $viewrole . '" />';
$this->content->text .= '<input name="courseid" type="hidden" value="' . $this->page->course->id . '" />';
$this->content->text .= '<input name="sesskey" type="hidden" value="' . $USER->sesskey . '" />';
$this->content->text .= '<button id="unenrol_button" type="submit" title="' . $buttonunenroltooltip . '">' . $buttonunenroltext . '</button><br />';
$this->content->text .= '</fieldset></form>';
$this->content->text .= '</div>';
}
}
$demostudentuser = get_complete_user_data('username', $demostudentusername);
if (!$demostudentuser) {
// DemoStudent account does not exist yet. Let's create it.
// Test this by deleting your DemoStudent account from mdl_user DB table.
$demostudentuser = create_demostudent_account($demostudentusername);
if (!$demostudentuser) {
// Test this by setting $demostudentuser to false.
print get_string('errorfailedtocreateuser', 'block_demostudent', $demostudentusername);
print get_string('returntocourse', 'block_demostudent', $url);
exit;
}
}
// Else DemoStudent user already exists for this instructor.
$demostudentid = $demostudentuser->id;
// Enrol DemoStudent in this course (as a demostudent).
$demostudentroleid = get_roleid_by_roleshortname('demostudent');
if (!$demostudentroleid) {
print get_string('warningmissingrole', 'block_demostudent');
}
if (!is_enrolled($coursecontext, $demostudentuser)) {
if (!enrol_try_internal_enrol($courseid, $demostudentid, $demostudentroleid)) {
// Enrolment failed. Haven't seen this happen yet.
trigger_error('DemoStudent user enrolment failed!<br>Parameters:<br>' . '<br> url=' . var_export($url, true) . '<br> viewrole=' . var_export($viewrole, true) . '<br> courseid=' . var_export($courseid, true) . '<br>Globals:' . '<br> userid=' . var_export($userid, true) . '<br> username='******'<br>Locals:' . '<br> demostudentid=' . var_export($demostudentid, true) . '<br> demostudentroleid=' . var_export($demostudentroleid, true) . '<br> coursecontext=' . var_export($coursecontext, true) . '<br> demostudentuser='******'s possible that the function failed, but that the user is nevertheless enrolled.
// If the user is not enrolled, a later check will take care of things.
}
}
// Aditionally, if we are switching from 'instructor' view (i.e., not in 'firstuse' mode), switch user.
if ($viewrole == 'instructor') {
if (is_siteadmin($demostudentid)) {
// This should never happen. Haven't seen it happen yet.
