How set FilterRole base on customer data type's member.

Wgxzzzzzzc

this is my datatype

typedef struct {
    QPixmap icon;
    QString userName;
    QString recentMessage;
} MuItemData;

Q_DECLARE_METATYPE(MuItemData)

I use the instance of MuItemDatatype to add data to QStandardItem as well as set model

    for(int i = 0; i < userData->size(); ++i)
    {
        QStandardItem *pItem = new QStandardItem;
        MuItemData itemData;
        itemData.userName = userData->at(i).getSNickName();
        itemData.icon = userData->at(i).getPixUserIcon();
        itemData.recentMessage = userData->at(i).getVRecentMessage()[0];
        pItem->setData(QVariant::fromValue(itemData), Qt::UserRole+1);
        userDataModel->appendRow(pItem);
    }

Then i use QSortFilterProxyModel. What my question is how can I filter every data item based on 'userName'

    //the type of userDataProxyModel is QSortFilterProxyModel
    userDataProxyModel->setSourceModel(userDataModel);

i use setFilterRegExp but it's filter is not 'userName'.

Wgxzzzzzzc

I found a solution that set a data role based on 'userName'. whether have a better way avoiding set redundant data?

pItem->setData(userData->at(i).getSNickName(), Qt::UserRole);

.....

userDataProxyModel->setFilterRole(Qt::UserRole);