Method to read foreign key values from QSqlRelationalTableModel ?

[7ymekk]

Old thread but I was looking for solution. Here is what You should do:

model->setRelation(model->fieldIndex("continent_id"), QSqlRelation("Table_2", "continent_id", "continent_name, continent_id as continent_id"));

or something like that. I have table Orders with contractor_id and Contractors with id so I had to use:

setRelation(this->fieldIndex("contractor_id"), QSqlRelation("Contractors", "id", "name, contractor_id as contractor_id"));

'displayColumn' in Qt documentation is misleading. It should be called displayColumns.