/**
* Retrieves a list of the resources associated with the given tag.
*
* Parameters: GET, resources (single param)
*
* We might have to think about adding a way to announce whether there
* is a "next page" or not.
*
* Currently supports xhtml and xml dataformats.
*/
function getTagResources(folksoQuery $q, folksoDBconnect $dbc, folksoSession $fks)
{
$r = new folksoResponse();
try {
$i = new folksoDBinteract($dbc);
// check to see if tag exists -- can this be done with the main query instead?
if (!$i->tagp($q->tag)) {
$r->setError(404, 'Tag not found', $q->tag . " does not exist in the database");
return $r;
}
$querybase = "SELECT\n r.uri_raw AS href, r.id AS id, r.title AS title, \n CASE \n WHEN title IS NULL THEN uri_normal \n ELSE title \n END AS display\n FROM resource r\n JOIN tagevent ON r.id = tagevent.resource_id\n JOIN tag ON tagevent.tag_id = tag.id ";
// tag by ID
if (is_numeric($q->tag)) {
$querybase .= "WHERE tag.id = " . $i->dbescape($q->tag);
} else {
$querybase .= "WHERE tag.tagnorm = normalize_tag('" . $i->dbescape($q->tag) . "')";
}
$querybase .= " ORDER BY r.visited DESC ";
//pagination
if (!$q->is_param('page') || $q->get_param('page') == 1) {
$querybase .= " LIMIT 20 ";
} else {
$querybase .= " LIMIT " . $q->get_param('page') * 20 . ",20 ";
}
$i->query($querybase);
} catch (dbException $e) {
return $r->handleDBexception($e);
}
switch ($i->result_status) {
case 'NOROWS':
$r->setOk(204, 'No resources associated with tag');
$r->t("No resources are currently associated with " . $q->tag);
return $r;
break;
case 'OK':
$r->setOk(200, 'Tag found');
break;
// now we do the rest, assuming all is well.
}
$df = new folksoDisplayFactory();
$dd = $df->ResourceList();
if ($q->content_type() == 'text/html') {
$dd->activate_style('xhtml');
} else {
$dd->activate_style('xml');
}
$r->t($dd->startform());
while ($row = $i->result->fetch_object()) {
$r->t($dd->line($row->id, $row->href, array('xml' => $row->display, 'default' => $row->display)));
}
$r->t($dd->endform());
return $r;
}
/**
*
*
*/
function getUserResByTag(folksoQuery $q, folksoDBconnect $dbc, folksoSession $fks)
{
$r = new folksoResponse();
try {
$u = $fks->userSession(null);
if (!$u instanceof folksoUser && !$q->is_param('user')) {
return $r->setError(404, 'No user');
} elseif ($q->is_param('user')) {
$u = new folksoUser($dbc);
// we create a user object anyway
$u->setUid($q->get_param('user'));
if (!$u->exists($q->get_param('user'))) {
return $r->setError(404, 'Missing or invalid user');
}
}
$i = new folksoDBinteract($dbc);
$uq = new folksoUserQuery();
$sql = $uq->resourcesByTag($q->tag, $u->userid);
$i->query($sql);
/* these are inside the try block because exists() hits the DB */
if ($i->rowCount == 0) {
if (isset($u->nick) || $u->exists()) {
return $r->setOk(204, 'User has no resources with this tag');
} else {
// no longer necessary
return $r->setError(404, 'Unknown user');
}
}
} catch (dbException $e) {
return $r->handleDBexception($e);
} catch (badUseridException $e) {
return $r->handleDBexception($e);
// TODO: update this with new class
}
$r->setOk(200, 'Found');
$df = new folksoDisplayFactory();
if ($q->content_type() == 'json') {
$dd = new folksoDataJson('resid', 'url', 'title');
} else {
$dd = $df->ResourceList('xml');
}
$r->t($dd->startform());
while ($row = $i->result->fetch_object()) {
$r->t($dd->line($row->id, htmlspecialchars($row->uri_raw), htmlspecialchars($row->title)));
}
$r->t($dd->endform());
return $r;
}
