Fetching data

Wherever you need a new root document or collection, just use the relevant store functions

let user = stores.UserStore.getbyId(userId)};

The user object returned is actually an observable object that will stay up to date whenever the state changes (whether within the application or directly on the back end store).

Traversing the tree structure implicitly

let posts = user.userPosts

This will actually lazy-connect to the database to get the associated UserPosts for this User. Again the posts object in this case is an observable collection that will stay up to date with any added, deleted, or updates posts