saveUpdatedLang function
Implementation
Future<String?> saveUpdatedLang(LangData lang, querySnapshot, String _name) async {
// print("saveUpdatedLang $_name");
var _data = querySnapshot.data();
Map<String, dynamic> _words = _data!['data'];
// print("old length=${_words.length}");
// print("new length=${lang.data.length}");
bool _added = false;
// for (int i = _words.length+1; i<=lang.data.length; i++){
for (int i = 0; i <= lang.data.length; i++){
// print("---$_name ${lang.data[i.toString()]} ${_words[i.toString()]}" );
if (lang.data[i.toString()] != null && _words[i.toString()] == null) {
_words.addAll({i.toString(): lang.data[i.toString()]});
// print("add $_name $i : ${lang.data[i.toString()]} ${_words[i.toString()]}" );
_added = true;
}
}
if (_added)
await FirebaseFirestore.instance.collection("language").doc(_name).set(_data, SetOptions(merge:true));
}