offerSave function
Implementation
Future<String?> offerSave() async {
try{
var _data = currentOffer.toJson();
if (currentOffer.id.isEmpty) {
currentOffer.id = await dbAddDocumentInTable("offer", _data);
await dbIncrementCounter("settings", "main", "offer_count", 1);
}else
await dbSetDocumentInTable("offer", currentOffer.id, _data);
}catch(ex){
return "offerSave " + ex.toString();
}
return null;
}