如何在 Firebase 数据库中嵌套数据？

Question

I would like to created a nested file for firebase database that nests as follows:

Category{
      Main{
       Books{
     Literature{
     Name: "American Origin",
     Author: "James Odla"
               }
            }
         }
     }
}

Answer 1

If you are using for example StreamBuilder and ListView.builder() for getting the categories snapshots if your stream is => Firestore.instance.collection("categories").snapshots() you should be able to get the category which is clicked => snapshot.data.documents[index] and the items => snapshot.data.documents[index]['items'] .