require_once '../tag/lib.php';
$action = optional_param('action', '', PARAM_ALPHA);
require_login();
if (empty($CFG->usetags)) {
error('Tags are disabled!');
}
if (isguestuser()) {
print_error('noguest');
}
if (!confirm_sesskey()) {
print_error('sesskey');
}
switch ($action) {
case 'addinterest':
$id = optional_param('id', 0, PARAM_INT);
$name = optional_param('name', '', PARAM_TEXT);
if (empty($name) && $id) {
$name = tag_name($id);
}
tag_an_item('user', $USER->id, $name);
if (!empty($name) && !$id) {
$id = tag_id(tag_normalize($name));
}
redirect($CFG->wwwroot . '/tag/index.php?id=' . $id);
break;
case 'flaginappropriate':
$id = required_param('id', PARAM_INT);
tag_flag_inappropriate($id);
redirect($CFG->wwwroot . '/tag/index.php?id=' . $id, get_string('responsiblewillbenotified', 'tag'));
break;
}
/**
* In a comma separated string of ids or names of tags, replaces all tag ids with their correspoding names
*
* Ex:
* Suppose the DB contains only the following entries in the tags table:
* id name
* 10 moodle
* 12 science
* 22 education
*
* tag_name_from_string('mOOdle, 10, HiStOrY, 17, 22')
* will return the string 'mOOdle,moodle,HiStOrY,,education'
*
* This is a helper function used by functions of this API to process function arguments ($tag_name_or_id)
*
* @param string $tag_names_or_ids_csv comma separated names or ids of tags
* @return int comma separated names of the tags
*/
function tag_name_from_string($tag_names_or_ids_csv)
{
$tag_names_or_ids = explode(',', $tag_names_or_ids_csv);
$tag_names = array();
foreach ($tag_names_or_ids as $name_or_id) {
if (is_numeric($name_or_id)) {
$tag_names[] = tag_name($name_or_id);
} elseif (is_string($name_or_id)) {
$tag_names[] = trim($name_or_id);
}
}
$tag_names_csv = implode(',', $tag_names);
return $tag_names_csv;
}
