Migration to cloud firestore 2.0.0

[Patrick386]

I am migrating to cloud firestore 2.0. There are some problems when importing data. What is the workaround?

Package:
freezed_annotation: ^0.14.1
json_annotation: ^4.0.1

@freezed
class UserModel with _$UserModel {
factory UserModel {
@default('') String uid,
@default('') String displayName,
@default('') String email,
.....
}) = _UserModel;

factory UserModel.formJson(Map<String, dynamic> data) =>
_$UserModelFromJson(data);
Map<String, dynamic> toJson() => _$UserModelToJson(this);

}

Migration Model
factory UserModel.formJson(Map<String, Object?> data) =>
_$UserModelFromJson(data);

**Error
QuerySnapshot snapshot =
await FirebaseFirestore.instance.collection(USERS_COLLECTION).get();

  return snapshot.docs
      .map((document) => UserModel.formJson(**document.data()**))
      .toList();

**Code

document.data() <throws an error. How should I change it?

[Salakar]

cc @rrousselGit

[rrousselGit]

What does "throws an error" means?

What is the error?

[Patrick386]

Hi, I haven't seen enough of the documentation. I've found a problem with my code. I'll try again and tell you if the problem persists. Thank you. /Patrick 2021년 5월 5일 (수) 오후 9:04, Remi Rousselet ***@***.***>님이 작성:

…

What does "throws an error" means? What is the error? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#6028 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AL3TF7IAMGESY3KQIGW3DDLTMEX3FANCNFSM44EFXRFQ> .

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[Patrick386]

Hi, I brought the model list using Reverpod> stream provider. However, I am not sure what to do when migrating. I tried, but couldn't get the desired value. (<List<ProductSlpModel>>) What is the method? OLD CODE: final productSlpStreamProvider = AutoDisposeStreamProvider<List<ProductSlpModel>>((ref) { final Stream<QuerySnapshot> snapshot = productSlpCollectionRef .orderBy(CREATED_AT) .snapshots(); return snapshot.map((snapshot) => snapshot.docs .map((document) => ProductSlpModel.formJson(document.data())) .toList()); }); Widget build(BuildContext context) { var result = useProvider(productSlpStreamProvider); return result.when( loading: () => Center(child: CircularProgressIndicator()), error: (err, stack) { print('PackageList Error: ${err.toString()}'); return Center( child: InkWell(child: Text(err.toString()), onTap: () {})); }, data: (List<ProductSlpModel> slpProduct) { .... } *MIGRATING CODE:* final CollectionReference<ProductSlpModel> serviceProductCollectionRef = firebaseFirestore .collection(SERVICE_PRODUCT_COLLECTION) .withConverter<ProductSlpModel>( fromFirestore: (DocumentSnapshot<Map<String, dynamic>> snapshot, _) => ProductSlpModel.formJson(snapshot.data()!), toFirestore: (ProductSlpModel model, _) => model.toJson()); final AutoDisposeStreamProvider productSlpStreamProvider = AutoDisposeStreamProvider((AutoDisposeProviderReference ref) { return serviceProductCollectionRef.snapshots(); //.map((event) => event.docs); }); Widget build(BuildContext context) { AsyncValue _result = useProvider(productSlpStreamProvider); // return _result.when( loading: () => SliverToBoxAdapter( child: const Center(child: CircularProgressIndicator())), error: (Object err, StackTrace? stack) => Text('Error $err'), // ignore: always_specify_types data: (slpProduct) { //<<<<<<<<<<< <List<ProductSlpModel>> ? ... } 2021년 5월 5일 (수) 오후 9:04, Remi Rousselet ***@***.***>님이 작성:

…

What does "throws an error" means? What is the error? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#6028 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AL3TF7IAMGESY3KQIGW3DDLTMEX3FANCNFSM44EFXRFQ> .

-- SINT Patrick 대표이사 공병주 Back Office 19, Wiryegwangjang-ro, Sujeong-gu, Seongnam-si, Gyeonggi-do, Republic of Korea Tel +82 02 400 8465 Mobile +82 010 5386 8880 Email ***@***.*** ***@***.***> CONFIDENTIAL: The information contained in this e-mail transmission is legally privileged and confidential. It may also be protected by law as attorney work product and attorney-client privileged communication. It is intended solely for the recipient(s) identified above. If you have received this e-mail transmission in error or you are not the intended recipient, please contact the sender immediately and destroy the transmission. Any distribution, reproduction, or dissemination of the message in this e-mail transmission is prohibited. Thank you for your cooperation in advance. 127, Beobwon-ro, Songpa-gu, Seoul, Republic of Korea (05836)