Извлечение единой коллекции документов из flutter

#firebase #flutter #dart #google-cloud-firestore # #firebase #flutter #dart #google-облако-firestore Вопрос: Find_Document (coll_name,search_val,return_fld) { var returnval; var db = FirebaseFirestore.instance.collection(coll_name); var rec = db.doc(search_val).get().then((value) { returnval = value.data()[return_fld]; print(returnval); return returnval;…