Implement asynchronous QAbstractItemModel

[ocgltd]

I am implementing an QAbstractItemModel which fetches data asynchronously over a slow connection. From what I read the methods in QAbstractItemModel should return a response immediately, which can be overwritten later. So I built a simple QAbstractItemModel overriding only rowcount and data.

My algorithm is:

1. Upon rowCount() called return cached value or 0 if never fetched before
2. Fetch rowCount from remote slow database
3. Upon receipt of response issue beginInsertRows and endInsertRows

That works, but the data method is never called. So my 3 items in the view are empty. Why is 'data' not called for each item?

[mzimmers]

@ocgltd if you put together a few lines of representative code, you're much more likely to get answers here.

Also: are you sure you wanted to post this in the QML forum?

[SGaist]

Duplicate here

Closing this one