Question

Is there a way to install validator (regex i.e) for a tableMOdel or some cells in this model?

Answer 1

There isn’t any built in support for validation in the model/view system but this wouldn’t be too difficult to do.

In QAbstractItemModel::setData you will need to validate the input, and return false if invalid, store the result of validation somewhere.

In [QAbstractItemModel::data you could now return a different colour for the Qt::BackgroundRole role to signal something was wrong.

In addition, you could implement a custom QAbstractItemDelegate this would allow you to create a validating editor, which could provide more feedback to the user.

The delegate would then be set on the view with one of the QAbstractItemView::setItemDelegate or setItemDelegateFor* functions.