HELP! QStandardItemModel::findItems(keyword, Qt::MatchContains | Qt::MatchRecursive, column /*= 2*/ )

[Navca Lin]

In QTreeView, I cannot use QStandardItemModel::findItems() when search column =2 to search the match items which at column 2.

[VRonin]

Hi,
The view should have nothing to do with findItems. Can you show us an example of what you want to happen and what happens instead?

[Navca Lin]

@VRonin
thank you very much!
I finished it at last by record all the QStandardItem * into a map as below :

so...now , I can only search the _allItems (which type is: map<QString, QStandardItem *>).

since QStandardItemModel::findItems () can only search column=0 recursively.

[Navca Lin]

@VRonin
see this link:
http://www.qtcentre.org/threads/39658-Searching-a-hierarchical-QStandardItemModel?highlight=finditems

the Qt version is 5.5, as the findItems cannot search column>0 even with Qt::MathRecursive.

[Navca Lin]

@Navca-Lin
Qt::MatchRecursive,
not Qt::MathRecursive.

[SGaist]

Hi,

Can you provide a code example that shows how you build and search your model ? I currently don't see any reason why you can't search in any other column than 0, that's just the default value used if you don't pass that parameter.

[VRonin]

Ok I think I got the problem. All the views in Qt only handle children of items in the first columns while QAbstractItemModel::match it will only search children of the index in column which triggers the clash if column>0. I'd go as far as to say it's an oversight in the code so feel free to post a bug report.

In the meantime, you can just manually search the model, no need to store the items in a separate map:

QList<QStandardItem*> findItemsRecurse( QStandardItemModel* model, const QString &text, int column=0, cont QModelIndex& parent = QModelIndex()){
    QList<QStandardItem*> result;
    for(int i=0, maxRow=model->rowCount(parent);i<maxRow;++i){
        QModelIndex currIdx = model->index(i,column,parent);
        if(currIdx->data().toString().contains(text))
            result << itemFromIndex(currIdx);
        for(int j=0, maxCol = model->columnCount(parent);j<maxCol;++j){
            currIdx = model->index(i,j,parent);
            if(model->hasChildren(currIdx))
                result.append(findItemsRecurse(model,text,column,currIdx));
        }
    }
    return result;
}

[Navca Lin]

@VRonin
thank you very very very very much~
I got your code~~

[Navca Lin]

@SGaist
thank you~

it's like this: