cannot set Qt::BackgroundRole using QSqlTableModel::setData()

QSqlTableModel::setData() rejects all roles other than Qt::EditRole, so that we cannot set Qt::BackgroundRole using QSqlTableModel::setData() , please add relevant description in the doc or change the code, the current behavior halts many users , e.g.

https://forum.qt.io/topic/30289/setdata-in-qsqltablemodel-with-role-other-than-qt-editrole-does-not-work

https://forum.qt.io/topic/85973/how-to-simply-change-the-background-colour-of-a-cell-inside-a-tableview/6