/**
* Returns course modules tagged with a specified tag ready for output on tag/index.php page
*
* This is a callback used by the tag area core/course_modules to search for course modules
* tagged with a specific tag.
*
* @param core_tag_tag $tag
* @param bool $exclusivemode if set to true it means that no other entities tagged with this tag
* are displayed on the page and the per-page limit may be bigger
* @param int $fromcontextid context id where the link was displayed, may be used by callbacks
* to display items in the same context first
* @param int $contextid context id where to search for records
* @param bool $recursivecontext search in subcontexts as well
* @param int $page 0-based number of page being displayed
* @return \core_tag\output\tagindex
*/
function course_get_tagged_course_modules($tag, $exclusivemode = false, $fromcontextid = 0, $contextid = 0, $recursivecontext = 1, $page = 0)
{
global $OUTPUT;
$perpage = $exclusivemode ? 20 : 5;
// Build select query.
$ctxselect = context_helper::get_preload_record_columns_sql('ctx');
$query = "SELECT cm.id AS cmid, c.id AS courseid, {$ctxselect}\n FROM {course_modules} cm\n JOIN {tag_instance} tt ON cm.id = tt.itemid\n JOIN {course} c ON cm.course = c.id\n JOIN {context} ctx ON ctx.instanceid = cm.id AND ctx.contextlevel = :coursemodulecontextlevel\n WHERE tt.itemtype = :itemtype AND tt.tagid = :tagid AND tt.component = :component\n AND c.id %COURSEFILTER% AND cm.id %ITEMFILTER%";
$params = array('itemtype' => 'course_modules', 'tagid' => $tag->id, 'component' => 'core', 'coursemodulecontextlevel' => CONTEXT_MODULE);
if ($contextid) {
$context = context::instance_by_id($contextid);
$query .= $recursivecontext ? ' AND (ctx.id = :contextid OR ctx.path LIKE :path)' : ' AND ctx.id = :contextid';
$params['contextid'] = $context->id;
$params['path'] = $context->path . '/%';
}
$query .= ' ORDER BY';
if ($fromcontextid) {
// In order-clause specify that modules from inside "fromctx" context should be returned first.
$fromcontext = context::instance_by_id($fromcontextid);
$query .= ' (CASE WHEN ctx.id = :fromcontextid OR ctx.path LIKE :frompath THEN 0 ELSE 1 END),';
$params['fromcontextid'] = $fromcontext->id;
$params['frompath'] = $fromcontext->path . '/%';
}
$query .= ' c.sortorder, cm.id';
$totalpages = $page + 1;
// Use core_tag_index_builder to build and filter the list of items.
// Request one item more than we need so we know if next page exists.
$builder = new core_tag_index_builder('core', 'course_modules', $query, $params, $page * $perpage, $perpage + 1);
while ($item = $builder->has_item_that_needs_access_check()) {
context_helper::preload_from_record($item);
$courseid = $item->courseid;
if (!$builder->can_access_course($courseid)) {
$builder->set_accessible($item, false);
continue;
}
$modinfo = get_fast_modinfo($builder->get_course($courseid));
// Set accessibility of this item and all other items in the same course.
$builder->walk(function ($taggeditem) use($courseid, $modinfo, $builder) {
if ($taggeditem->courseid == $courseid) {
$cm = $modinfo->get_cm($taggeditem->cmid);
$builder->set_accessible($taggeditem, $cm->uservisible);
}
});
}
$items = $builder->get_items();
if (count($items) > $perpage) {
$totalpages = $page + 2;
// We don't need exact page count, just indicate that the next page exists.
array_pop($items);
}
// Build the display contents.
if ($items) {
$tagfeed = new core_tag\output\tagfeed();
foreach ($items as $item) {
context_helper::preload_from_record($item);
$course = $builder->get_course($item->courseid);
$modinfo = get_fast_modinfo($course);
$cm = $modinfo->get_cm($item->cmid);
$courseurl = course_get_url($item->courseid, $cm->sectionnum);
$cmname = $cm->get_formatted_name();
if (!$exclusivemode) {
$cmname = shorten_text($cmname, 100);
}
$cmname = html_writer::link($cm->url ?: $courseurl, $cmname);
$coursename = format_string($course->fullname, true, array('context' => context_course::instance($item->courseid)));
$coursename = html_writer::link($courseurl, $coursename);
$icon = html_writer::empty_tag('img', array('src' => $cm->get_icon_url()));
$tagfeed->add($icon, $cmname, $coursename);
}
$content = $OUTPUT->render_from_template('core_tag/tagfeed', $tagfeed->export_for_template($OUTPUT));
return new core_tag\output\tagindex($tag, 'core', 'course_modules', $content, $exclusivemode, $fromcontextid, $contextid, $recursivecontext, $page, $totalpages);
}
}
/**
* Returns wiki pages tagged with a specified tag.
*
* This is a callback used by the tag area mod_wiki/wiki_pages to search for wiki pages
* tagged with a specific tag.
*
* @param core_tag_tag $tag
* @param bool $exclusivemode if set to true it means that no other entities tagged with this tag
* are displayed on the page and the per-page limit may be bigger
* @param int $fromctx context id where the link was displayed, may be used by callbacks
* to display items in the same context first
* @param int $ctx context id where to search for records
* @param bool $rec search in subcontexts as well
* @param int $page 0-based number of page being displayed
* @return \core_tag\output\tagindex
*/
function mod_wiki_get_tagged_pages($tag, $exclusivemode = false, $fromctx = 0, $ctx = 0, $rec = 1, $page = 0)
{
global $OUTPUT;
$perpage = $exclusivemode ? 20 : 5;
// Build the SQL query.
$ctxselect = context_helper::get_preload_record_columns_sql('ctx');
$query = "SELECT wp.id, wp.title, ws.userid, ws.wikiid, ws.id AS subwikiid, ws.groupid, w.wikimode,\n cm.id AS cmid, c.id AS courseid, c.shortname, c.fullname, {$ctxselect}\n FROM {wiki_pages} wp\n JOIN {wiki_subwikis} ws ON wp.subwikiid = ws.id\n JOIN {wiki} w ON w.id = ws.wikiid\n JOIN {modules} m ON m.name='wiki'\n JOIN {course_modules} cm ON cm.module = m.id AND cm.instance = w.id\n JOIN {tag_instance} tt ON wp.id = tt.itemid\n JOIN {course} c ON cm.course = c.id\n JOIN {context} ctx ON ctx.instanceid = cm.id AND ctx.contextlevel = :coursemodulecontextlevel\n WHERE tt.itemtype = :itemtype AND tt.tagid = :tagid AND tt.component = :component\n AND wp.id %ITEMFILTER% AND c.id %COURSEFILTER%";
$params = array('itemtype' => 'wiki_pages', 'tagid' => $tag->id, 'component' => 'mod_wiki', 'coursemodulecontextlevel' => CONTEXT_MODULE);
if ($ctx) {
$context = $ctx ? context::instance_by_id($ctx) : context_system::instance();
$query .= $rec ? ' AND (ctx.id = :contextid OR ctx.path LIKE :path)' : ' AND ctx.id = :contextid';
$params['contextid'] = $context->id;
$params['path'] = $context->path . '/%';
}
$query .= " ORDER BY ";
if ($fromctx) {
// In order-clause specify that modules from inside "fromctx" context should be returned first.
$fromcontext = context::instance_by_id($fromctx);
$query .= ' (CASE WHEN ctx.id = :fromcontextid OR ctx.path LIKE :frompath THEN 0 ELSE 1 END),';
$params['fromcontextid'] = $fromcontext->id;
$params['frompath'] = $fromcontext->path . '/%';
}
$query .= ' c.sortorder, cm.id, wp.id';
$totalpages = $page + 1;
// Use core_tag_index_builder to build and filter the list of items.
$builder = new core_tag_index_builder('mod_wiki', 'wiki_pages', $query, $params, $page * $perpage, $perpage + 1);
while ($item = $builder->has_item_that_needs_access_check()) {
context_helper::preload_from_record($item);
$courseid = $item->courseid;
if (!$builder->can_access_course($courseid)) {
$builder->set_accessible($item, false);
continue;
}
$modinfo = get_fast_modinfo($builder->get_course($courseid));
// Set accessibility of this item and all other items in the same course.
$builder->walk(function ($taggeditem) use($courseid, $modinfo, $builder) {
if ($taggeditem->courseid == $courseid) {
$accessible = false;
if (($cm = $modinfo->get_cm($taggeditem->cmid)) && $cm->uservisible) {
$subwiki = (object) array('id' => $taggeditem->subwikiid, 'groupid' => $taggeditem->groupid, 'userid' => $taggeditem->userid, 'wikiid' => $taggeditem->wikiid);
$wiki = (object) array('id' => $taggeditem->wikiid, 'wikimode' => $taggeditem->wikimode, 'course' => $cm->course);
$accessible = wiki_user_can_view($subwiki, $wiki);
}
$builder->set_accessible($taggeditem, $accessible);
}
});
}
$items = $builder->get_items();
if (count($items) > $perpage) {
$totalpages = $page + 2;
// We don't need exact page count, just indicate that the next page exists.
array_pop($items);
}
// Build the display contents.
if ($items) {
$tagfeed = new core_tag\output\tagfeed();
foreach ($items as $item) {
context_helper::preload_from_record($item);
$modinfo = get_fast_modinfo($item->courseid);
$cm = $modinfo->get_cm($item->cmid);
$pageurl = new moodle_url('/mod/wiki/view.php', array('pageid' => $item->id));
$pagename = format_string($item->title, true, array('context' => context_module::instance($item->cmid)));
$pagename = html_writer::link($pageurl, $pagename);
$courseurl = course_get_url($item->courseid, $cm->sectionnum);
$cmname = html_writer::link($cm->url, $cm->get_formatted_name());
$coursename = format_string($item->fullname, true, array('context' => context_course::instance($item->courseid)));
$coursename = html_writer::link($courseurl, $coursename);
$icon = html_writer::link($pageurl, html_writer::empty_tag('img', array('src' => $cm->get_icon_url())));
$tagfeed->add($icon, $pagename, $cmname . '<br>' . $coursename);
}
$content = $OUTPUT->render_from_template('core_tag/tagfeed', $tagfeed->export_for_template($OUTPUT));
return new core_tag\output\tagindex($tag, 'mod_wiki', 'wiki_pages', $content, $exclusivemode, $fromctx, $ctx, $rec, $page, $totalpages);
}
}
