public static function update($id)
{
if (self::get_user_admin() == null) {
Redirect::to('/home');
}
$params = $_POST;
$institution = new Institution(array('id' => $id, 'name' => $params['name'], 'picture' => $params['picture']));
$errors = $institution->errors();
if (count($errors) == 0) {
$institution->update();
Redirect::to('/institutions', array('message' => 'Changes saved!'));
} else {
View::make('admin/edit_institution.html', array('errors' => $errors, 'institution' => $institution));
}
}