loadForm method
Implementation
void loadForm(UParkingStaffResponse? s) {
editing = s;
firstNameController.clear();
lastNameController.clear();
userNameController.clear();
passwordController.clear();
phoneController.clear();
shiftTitleController.text = s?.shiftTitle ?? "";
permissions = s == null
? <TagParkingStaff>{TagParkingStaff.registerEntryExit}
: TagParkingStaff.values.where((TagParkingStaff t) => s.tags.contains(t.number)).toSet();
maxDiscount = s?.maxDiscountPercent.toDouble() ?? 0;
}