How to add documents to another collection - Firestore Flutter

manpreet Best Answer 3 years ago

It is necessary to add documents from one collection tickets by button to another collection cart, it is impossible to implement it, maybe someone knows how to do it? Do through BLoCThis is how I do it but it does not work.

This is the function itself

   Future addDataToCart(goodsData) async{
        DocumentReference ref = await db.collection('cart').add(goodsData);
        print(ref.documentID);
        return ref.documentID;
      }

Initialize to BLoC

   void addDataToCart(
        DocumentSnapshot doc,
        ) async {
        String id = await db.addDataToCart(doc);
        this.id = id;
        _inId.add(this.id);
      }

And here I add an action to the button

blocCart.addDataToCart(doc);

And this is the data that I want to add to the collection cart From this collection you need to add

Future createData(
    String _description,
    String _image,
    String _name,
    String _price,
  ) async {
    DocumentReference ref = await db.collection('tickets').add({
      'description': '$_description',
      'image': _image,
      'name': '$_name',
      'price': '$_price',
    });
    print(ref.documentID);
    return ref.documentID;
  }