setRoleNames in Qt 5

[yandi]

Hi Guys,

I try to follow example in forum/internet to using QSqlQueryModel or QSqlTableModel in Qml.
but in doc that setRoleNames is deprecated, how to set new role in Qt 5?

rgds

[wysota]

Subclass and reimplement roleNames().

[adhyani]

Can someone give an example or a code snippet which will show how we can port setRoleNames() API in Qt5?

[anda_skoa]

See comment #2.

Create a sub class of the model.
Reimplement (overwrite) the roleNames() method.

Neither creating a subclass nor overwriting a virtual method is specific to Qt but basic C++ idioms.

Cheers,
_

[shsdev]

Hi,
Well, I had exaclty the same question as yandi. And I did not find the roleNames() method.
Post edited, because I though the roleNames() method wouldn't be a member of QSqlQueryModel, but it is indeed via the QAbstractItemModel:
http://qt-project.org/doc/qt-5/qabst...html#roleNames
Best,
Sven

[QutWizard]

How to reimplement roleNames:

QHash<int, QByteArray> ClassName::roleNames() const
{
    QHash<int, QByteArray> roles;
    roles[ObjectRole] = "object";
    return roles;
}
 
    protected:
        QHash<int, QByteArray> roleNames() const;

QHash<int, QByteArray> ClassName::roleNames() const
{
    QHash<int, QByteArray> roles;
    roles[ObjectRole] = "object";
    return roles;
}

    protected:
        QHash<int, QByteArray> roleNames() const;

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[pip010]

well I did just that and the method never get called, any idea why?

[anda_skoa]

Make sure you have the correct signature.

If you are using a C++11 capable compiler, try adding the override keyword so you'll get an error on signature mismatch.

Cheers,
_