/**
* Obtains the appropriate subwiki object for a request. If one cannot
* be obtained, either creates one or calls error() and stops.
*
* @param object $ouwiki Wiki object
* @param object $cm Course-module object
* @param object $context Context to use for checking permissions
* @param int $groupid Group ID or 0 to use any appropriate group
* @param int $userid User ID or 0 to use current user
* @param bool $create If true, creates a wiki if it doesn't exist
* @return mixed Object with the data from the subwiki table. Also has extra 'canedit' field
* set to true if that's allowed.
*/
function ouwiki_get_subwiki($course, $ouwiki, $cm, $context, $groupid, $userid, $create = null)
{
global $USER, $DB;
switch ($ouwiki->subwikis) {
case OUWIKI_SUBWIKIS_SINGLE:
$subwiki = $DB->get_record_select('ouwiki_subwikis', 'wikiid = ? AND groupid IS NULL
AND userid IS NULL', array($ouwiki->id));
if ($subwiki) {
ouwiki_set_extra_subwiki_fields($subwiki, $ouwiki, $context);
return $subwiki;
}
if ($create) {
$subwiki = ouwiki_create_subwiki($ouwiki, $cm, $course);
ouwiki_set_extra_subwiki_fields($subwiki, $ouwiki, $context);
ouwiki_init_pages($course, $cm, $ouwiki, $subwiki, $ouwiki);
return $subwiki;
}
ouwiki_error('Wiki does not exist. View wikis before attempting other actions.');
break;
case OUWIKI_SUBWIKIS_GROUPS:
$groupid = groups_get_activity_group($cm, true);
if (!$groupid) {
$groups = groups_get_activity_allowed_groups($cm);
if (!$groups) {
if (!groups_get_all_groups($cm->course, 0, $cm->groupingid)) {
ouwiki_error('This wiki cannot be displayed because it is a group wiki,
but no groups have been set up for the course (or grouping, if selected).');
} else {
ouwiki_error('You do not have access to any of the groups in this wiki.');
}
}
$groupid = reset($groups)->id;
}
$othergroup = !groups_is_member($groupid);
$subwiki = $DB->get_record_select('ouwiki_subwikis', 'wikiid = ? AND groupid = ?
AND userid IS NULL', array($ouwiki->id, $groupid));
if ($subwiki) {
ouwiki_set_extra_subwiki_fields($subwiki, $ouwiki, $context, $othergroup);
return $subwiki;
}
if ($create) {
$subwiki = ouwiki_create_subwiki($ouwiki, $cm, $course, null, $groupid);
ouwiki_set_extra_subwiki_fields($subwiki, $ouwiki, $context, $othergroup);
ouwiki_init_pages($course, $cm, $ouwiki, $subwiki, $ouwiki);
return $subwiki;
}
ouwiki_error('Wiki does not exist. View wikis before attempting other actions.');
break;
case OUWIKI_SUBWIKIS_INDIVIDUAL:
if ($userid == 0) {
$userid = $USER->id;
}
$otheruser = false;
if ($userid != $USER->id) {
$otheruser = true;
// Is user allowed to view everybody?
if (!has_capability('mod/ouwiki:viewallindividuals', $context)) {
// Nope. Are they allowed to view people in same group?
if (!has_capability('mod/ouwiki:viewgroupindividuals', $context)) {
ouwiki_error('You do not have access to view somebody else\'s wiki.');
}
// Check user is in same group. Note this isn't now restricted to the
// module grouping
$ourgroups = groups_get_all_groups($cm->course, $USER->id);
$theirgroups = groups_get_all_groups($cm->course, $userid);
$found = false;
foreach ($ourgroups as $ourgroup) {
foreach ($theirgroups as $theirgroup) {
if ($ourgroup->id == $theirgroup->id) {
$found = true;
break;
}
}
if ($found) {
break;
}
}
if (!$found) {
ouwiki_error('You do not have access to view this user\'s wiki.');
}
}
}
// OK now find wiki
$subwiki = $DB->get_record_select('ouwiki_subwikis', 'wikiid = ? AND groupid IS NULL
AND userid = ?', array($ouwiki->id, $userid));
if ($subwiki) {
ouwiki_set_extra_subwiki_fields($subwiki, $ouwiki, $context, $otheruser, !$otheruser);
return $subwiki;
}
// Create one
if ($create) {
$subwiki = ouwiki_create_subwiki($ouwiki, $cm, $course, $userid);
ouwiki_set_extra_subwiki_fields($subwiki, $ouwiki, $context, $otheruser, !$otheruser);
ouwiki_init_pages($course, $cm, $ouwiki, $subwiki, $ouwiki);
return $subwiki;
}
ouwiki_error('Wiki does not exist. View wikis before attempting other actions.');
break;
default:
ouwiki_error("Unexpected subwikis value: {$ouwiki->subwikis}");
}
}
function ouwiki_update_instance($data, $mform)
{
global $CFG, $DB;
$data->id = $data->instance;
// Update main record.
$DB->update_record('ouwiki', $data);
// Set up null values
$nullvalues = array('editbegin', 'editend', 'timeout');
foreach ($nullvalues as $nullvalue) {
if (empty($data->{$nullvalue})) {
unset($data->{$nullvalue});
$DB->set_field('ouwiki', $nullvalue, null, array('id' => $data->id));
}
}
if (strlen(preg_replace('/(<.*?>)|(&.*?;)|\\s/', '', $data->intro)) == 0) {
unset($data->intro);
$DB->set_field('ouwiki', 'intro', null, array('id' => $data->id));
}
ouwiki_grade_item_update($data);
if (!($cm = get_coursemodule_from_id('ouwiki', $data->coursemodule))) {
print_error('invalidcoursemodule');
}
// Checking course instance.
$course = $DB->get_record('course', array('id' => $data->course), '*', MUST_EXIST);
if ($filename = $mform->get_new_filename('template_file')) {
// Delete any previous template files.
$cmid = $data->coursemodule;
$context = context_module::instance($cmid);
$fs = get_file_storage();
$fs->delete_area_files($context->id, 'mod_ouwiki', 'template', $data->id);
// Add template file.
$file = $mform->save_stored_file('template_file', $context->id, 'mod_ouwiki', 'template', $data->id, '/', $filename);
$DB->set_field('ouwiki', 'template', '/' . $file->get_filename(), array('id' => $data->id));
// Check for empty wikis (i.e. wikis without a start page already created).
$subwikis = ouwiki_get_subwikis($data->id);
$ouwiki = $DB->get_record_select('ouwiki', 'id = ?', array($data->id));
foreach ($subwikis as $subwiki) {
if (!ouwiki_subwiki_content_exists($subwiki->id)) {
// Amend any empty wikis from template.
ouwiki_init_pages($course, $cm, $ouwiki, $subwiki);
}
}
}
return true;
}
function test_ouwiki_init_pages()
{
$user = $this->get_new_user();
$course = $this->get_new_course();
$ouwiki = $this->get_new_ouwiki($course->id, OUWIKI_SUBWIKIS_SINGLE);
$cm = $this->get_new_course_module($course->id, $ouwiki->id, NOGROUPS);
$context = get_context_instance(CONTEXT_MODULE, $cm->instance);
$groupid = 0;
$subwiki = ouwiki_get_subwiki($course, $ouwiki, $cm, $context, $groupid, $user->id, true);
// doesn't return anything
ouwiki_init_pages($course, $cm, $ouwiki, $subwiki, $ouwiki);
}
