Add new document with document reference

[Vastuney]

I'm slowly learning firestore and trying to create a new document that will have two fields as references to other documents. As a string I have no problem storing them, but it would be much more convenient to have them as references. The application when adding closes without any error.

Platform: Windows

Future<void> add(Products product) async { try { await _firestoreService.addDocument( collectionPath: collection, data: product.toMap(), documentId: product.name, ); } catch (e) { throw Exception('Nie udało się dodać produktu'); } }

Products _buildProductData() { return Products( id: '', name: _nameController.text, ean: _eanController.text, brand: _selectedBrand!.reference!, category: _activeCategory.toList()[0].doc.reference, ); }

`import 'package:cloud_firestore/cloud_firestore.dart';

class Products {
final String id;
final String name;
final String ean;
final DocumentReference brand;
final DocumentReference category;

Products({
required this.id,
required this.name,
required this.ean,
required this.brand,
required this.category,
});

factory Products.fromFirestore(DocumentSnapshot doc) {
final data = doc.data() as Map<String, dynamic>;
return Products(
id: doc.id,
name: data['name'] ?? '',
ean: data['ean'] ?? '',
brand: data['brand'],
category: data['category'],
);
}

Map<String, dynamic> toMap() {
return {
'name': name,
'ean': ean,
'brand': brand,
'category': category,
};
}
}`