[Interest] Proxy model prepending rows to model

[Stephen Kelly]

On Monday, October 28, 2013 12:27:03 André Somers wrote:
> >> Am I missing something obvious here ?
> > 
> > It's not really possible to add rows using a proxy model. Any attempt to
> > do so will inevitably be buggy. Rows/columns can only be filtered out.
> 
> Do you care to explain that a bit more? I don't see why it would need to 
> be buggy at all. It may tricky to do, but that's not the same.

When the base model updates its persistent indexes, the proxy can't know in 
all cases how to update the persistent indexes of the extra stuff.

Thanks,

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