Pagination with Firebase firestore - swift 4

Question

I\'m trying to paginate data (infinitely scroll my tableview) using firestore. I\'ve integrated the code google gives for pagination as best I can, but I\'m still having problem

Answer 1

My solution was similar to @yambo, however, I tried to avoid making extra calls to the database. After the first call to the database, I get back 10 objects and when it is time to load the new page I kept a reference of how many objects and I checked if the count + 9 is in the range of my new count.

    @objc func LoadMore() {
    let oldCount = self.uploads.count
    guard shouldLoadMore else { return }
    self.db.getNextPage { (result) in
        switch result {
        case .failure(let err):
            print(err)
        case .success(let newPosts):
            self.uploads.insert(contentsOf: newPosts, at: self.uploads.count)
            if oldCount...oldCount+9 ~= self.uploads.count {
                self.shouldLoadMore = false
            }
            DispatchQueue.main.async {
                self.uploadsView.collectionView.reloadData()
            }
        }
    }
}