csfr_protection();
$action = NULL;
if (isset($_POST['action'])) {
$action = trim($_POST['action']);
}
if (isset($action)) {
switch ($action) {
case "list_subject_types":
$current_taxonomy = new Taxonomy();
if (isset($_POST['id'])) {
$current_taxonomy->load((int) $_POST['id']);
} else {
$current_taxonomy->load();
}
echo '<p><a href="index.php?p=form_add_subject_type">Add a new subject type</a></p>';
echo $current_taxonomy->get_taxonomy();
break;
case "list_subject_types_DEPRECATED":
// might have an ID value passed as well.
$db = Database::get_instance();
$query = $db->prepare("SELECT id FROM subject_types");
if ($query->execute()) {
$subjects_collection = array();
while ($row = $query->fetch()) {
$new_subject = new SubjectType();
$new_subject->load($row['id']);
$subjects_collection[] = $new_subject;
}
$output = '<table class="table table-striped table-bordered">';
$output .= '<thead><tr><td><strong>Subject types</strong></td><td><strong>Description</strong></td></tr></thead>';
foreach ($subjects_collection as $subject) {
