Updating a proxy model
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wrote on 6 May 2016, 17:44 last edited by KlimichKartorGnusov 5 Jun 2016, 17:54This post is deleted!
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Hi,
If the source model has been implemented correctly, it should be done automatically.
What is your use case ?
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Hi,
If the source model has been implemented correctly, it should be done automatically.
What is your use case ?
wrote on 7 May 2016, 05:36 last edited by@SGaist For update the source model i use a signal:
QAbstractItemModel::dataChange(const QModelIndex & topLeft, const QModelIndex & bottomRight)Necessary something else?
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What modification are you doing ? Through setData ?
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wrote on 9 May 2016, 13:15 last edited by KlimichKartorGnusov 5 Sept 2016, 13:29
@SGaist I use a custom method instead setData(). The changes are simple. Swap 1 to 0. After all is done, i emit a signal dataChange. Row which contains 1, should be in the proxy model, but is not happens. I must call the invalidate method that would update the proxy model. Why dataChange signal in source model is not enough?
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Without seeing your code it's pretty much Crystal Ball Debugging. Can you share the implementation of that method ?
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Without seeing your code it's pretty much Crystal Ball Debugging. Can you share the implementation of that method ?
wrote on 10 May 2016, 18:27 last edited by KlimichKartorGnusov 5 Oct 2016, 18:32@SGaist Source code isn't contains mistakes. I change an object from the source data from the outside by an editor widget and for update model, i emit a signal dataChanged.
As I understand it, after this proxy model must call protected method filterAcceptsRow for a changed row but it isn't happens. For update i must call a invalidate method, that is not good, because will be processed all row from the source model. Maybe i something don't understand? -
Like I said, without seeing any code I can't comment on whether the wrong index is being used or something else is going on.
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