engelsystem/includes/controller/user_driver_licenses_controller.php

<?php

/**
 * Generates a hint, if user joined angeltypes that require a driving license and the user has no driver license
 * information provided.
 *
 * @return string|null
 */
function user_driver_license_required_hint()
{
    global $user;

    $angeltypes = User_angeltypes($user);
    $user_driver_license = UserDriverLicense($user['UID']);

    // User has already entered data, no hint needed.
    if ($user_driver_license != null) {
        return null;
    }

    foreach ($angeltypes as $angeltype) {
        if ($angeltype['requires_driver_license']) {
            return sprintf(
                _('You joined an angeltype which requires a driving license. Please edit your driving license information here: %s.'),
                '<a href="' . user_driver_license_edit_link() . '">' . _('driving license information') . '</a>'
            );
        }
    }

    return null;
}

/**
 * Route user driver licenses actions.
 *
 * @return array
 */
function user_driver_licenses_controller()
{
    global $user;

    if (!isset($user)) {
        redirect(page_link_to(''));
    }

    $action = strip_request_item('action', 'edit');

    switch ($action) {
        default:
        case 'edit':
            return user_driver_license_edit_controller();
    }
}

/**
 * Link to user driver license edit page for given user.
 *
 * @param array $user
 * @return string
 */
function user_driver_license_edit_link($user = null)
{
    if ($user == null) {
        return page_link_to('user_driver_licenses');
    }
    return page_link_to('user_driver_licenses', ['user_id' => $user['UID']]);
}

/**
 * Loads the user for the driver license.
 *
 * @return array
 */
function user_driver_license_load_user()
{
    global $user;
    $request = request();
    $user_source = $user;

    if ($request->has('user_id')) {
        $user_source = User($request->input('user_id'));
        if ($user_source == null) {
            redirect(user_driver_license_edit_link());
        }
    }

    return $user_source;
}

/**
 * Edit a users driver license information.
 *
 * @return array
 */
function user_driver_license_edit_controller()
{
    global $privileges, $user;
    $request = request();
    $user_source = user_driver_license_load_user();

    // only privilege admin_user can edit other users driver license information
    if ($user['UID'] != $user_source['UID'] && !in_array('admin_user', $privileges)) {
        redirect(user_driver_license_edit_link());
    }

    $user_driver_license = UserDriverLicense($user_source['UID']);
    if ($user_driver_license == null) {
        $wants_to_drive = false;
        $user_driver_license = UserDriverLicense_new();
    } else {
        $wants_to_drive = true;
    }

    if ($request->has('submit')) {
        $wants_to_drive = $request->has('wants_to_drive');
        if ($wants_to_drive) {
            $user_driver_license['has_car'] = $request->has('has_car');
            $user_driver_license['has_license_car'] = $request->has('has_license_car');
            $user_driver_license['has_license_3_5t_transporter'] = $request->has('has_license_3_5t_transporter');
            $user_driver_license['has_license_7_5t_truck'] = $request->has('has_license_7_5t_truck');
            $user_driver_license['has_license_12_5t_truck'] = $request->has('has_license_12_5t_truck');
            $user_driver_license['has_license_forklift'] = $request->has('has_license_forklift');

            if (UserDriverLicense_valid($user_driver_license)) {
                if ($user_driver_license['user_id'] == null) {
                    $user_driver_license = UserDriverLicenses_create($user_driver_license, $user_source);
                } else {
                    UserDriverLicenses_update($user_driver_license);
                }
                engelsystem_log('Driver license information updated.');
                success(_('Your driver license information has been saved.'));
                redirect(user_link($user_source));
            } else {
                error(_('Please select at least one driving license.'));
            }
        } elseif ($user_driver_license['user_id'] != null) {
            UserDriverLicenses_delete($user_source['UID']);
            engelsystem_log('Driver license information removed.');
            success(_('Your driver license information has been removed.'));
            redirect(user_link($user_source));
        }
    }

    return [
        sprintf(_('Edit %s driving license information'), $user_source['Nick']),
        UserDriverLicense_edit_view($user_source, $wants_to_drive, $user_driver_license)
    ];
}