how can i get firestore collection and subcollection in flutter

Question

Thank you for reading my question. My English may not be good enough before I ask you a question.

this my firestore structure

I'm using a flutter and I have to bring the product collection and subcollection image together from the FireStore.

I succeeded get data, but I don't know how to use it as a streambuilder.

FirebaseFirestore.instance
                  .collection("products")
                  .get()
                  .then((value) async => {
                        for (DocumentSnapshot document in value.docs)
                          {
                            log(document.data().toString()),
                            await document.reference
                                .collection("images")
                                .get()
                                .then((value) => {
                                      for (DocumentSnapshot document
                                          in value.docs)
                                        {
                                          log(document.data().toString()),
                                        }
                                    }),
                          }
                      });

code run log result

I looked for it for three days, but I couldn't find the answer. Please reply.

Have a nice day. Thank you.

Answer 1

The only way I have found to do this is to use 2 different streambuilders, naming each snapshot differently. Use one for the products collection, then images for the other. What I would recommend is to add a field of 'images' in your product document and make it an array of string types. This will allow you to reference the images straight from each product document