Flutter - Updated all Firebase Dependencies - Bad state: cannot get a field on a DocumentSnapshotPla-CodePudding

I have a flutter project that I want to migrate to the newest dependencies (Firestore, FirebaseAuth, FirebaseStorage, etc.). I migrated all the code and also updated my library to be able to launch the app. In a lot of my firebase collections I do not have defined fields and previously when I request from Firebase the field it just returns null. Now instead, it creates an error - Bad state: cannot get a field on a DocumentSnapshotPlatform which does not exist and the application cannot function properly. I would appreciate solutions that would allow me to update my dependencies but not change the code base as much.

Dependencies in Pubspec.yaml file: cupertino_icons: ^1.0.4 cloud_firestore: ^3.1.0 firebase_auth: ^3.2.0 curved_navigation_bar: ^1.0.1 grouped_list: ^4.1.0 random_color: ^1.0.6-nullsafety intl: ^0.17.0 firebase_storage: ^10.1.0 image_picker: ^0.8.4 4 flutter_staggered_grid_view: ^0.4.1 carousel_slider: ^4.0.0 csv: ^5.0.0 path_provider: ^2.0.7 excel: ^2.0.0-null-safety-3 flutter_email_sender: ^5.0.2 firebase_core: ^1.10.0 firebase_messaging: ^11.1.0 auto_size_text: ^3.0.0 flutter_icons: ^1.1.0 camera: ^0.9.4 4 qr_code_scanner: ^0.6.1 package_info: ^2.0.2 url_launcher: ^6.0.13

Example Streambuilder code: StreamBuilder( stream: stream, builder: (ctx, queryDetailSnapShot) { if (queryDetailSnapShot.connectionState == ConnectionState.waiting) { return Center(child: CircularProgressIndicator()); }

                      var priceDetail = queryDetailSnapShot.data.docs;
                      return ListView.builder(
                          reverse: false,
                          itemCount: priceDetail.length,
                          itemBuilder: (ctx, index) {
                            if (_selectedBottomIndex == 1) {
                              return CostExpenseRequestContainer(
                                widget.storenameUser,
                                widget.storeCostAcess,
                                widget.userName,
                                widget.userEmail,
                                widget.userId,
                                widget.userLanguage,
                                priceDetail[index]['Storename'],
                                priceDetail[index]['Created_dt'],
                                priceDetail[index]['Expense_type_en'],
                                priceDetail[index]['Expense_type_th'],
                                priceDetail[index]['Expense_amount_org'],
                                priceDetail[index]['Expense_amount_approved'],
                                priceDetail[index]['Visible_to'],
                                priceDetail[index]['Expense_status'],
                                priceDetail[index]['Photo_url'],
                                priceDetail[index]['Service_dt'],
                                priceDetail[index]['Partner_account_number'],
                                priceDetail[index]['Partner_value_th'],
                                priceDetail[index]['Partner_value_en'],
                                priceDetail[index].id,
                                key: ValueKey(priceDetail[index].id,),
                              );
                            } else
                              return CostExpenseTrContainer(
                                widget.storenameUser,
                                widget.storeCostAcess,
                                widget.userName,
                                widget.userEmail,
                                widget.userId,
                                widget.userLanguage,
                                priceDetail[index]['Storename'],
                                priceDetail[index]['Created_dt'],
                                priceDetail[index]['Service_dt'],
                                priceDetail[index]['Expense_type_en'],
                                priceDetail[index]['Expense_type_th'],
                                priceDetail[index]['Expense_amount'],
                                priceDetail[index]['Reversal_flg'],
                                priceDetail[index]['Visible_to'],
                                priceDetail[index].id,
                                priceDetail[index]['Parent_record_id'],
                                priceDetail[index]['Partner_account_number'],
                                key: ValueKey(
                                  priceDetail[index].id,
                                ),
                              );
                          });
                    }),

Error Message: Bad state: cannot get a field on a DocumentSnapshotPlatform which does not exist

Thanks,

CodePudding user response：

Earlier you had to call the field in document snapshot like this

docSnapshot['field']

But in the recent version, you have to call the data function to get the data as a map then access the required field. Example

docSnapshot.data()['field']

CodePudding user response：

Since the field that was creating an issue for me was 'Partner_account_number', I needed to check the if the field exists before calling. This was the quickest fix I could find that need to apply throughout the application.

priceDetail[index].data().containsValue('Partner_account_number') ==true? priceDetail[index]['Partner_account_number'] :null,