Search QTableView with a value(e.g. "ID") which is not shown in the table

[sami1592]

Scenario:
Say, I have a person class

class Person{
    int id;    // only unique value
    QString name;
    QString address;
    QString age;
    etc etc
}

class Person{
    int id;    // only unique value
    QString name;
    QString address;
    QString age;
    etc etc
}

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The list of Person class is maintained in class called MyAllData class which is outside of my model class

The model class I am using; inherits QAbstractTableModel

MyCustomModelClass : QAbstractTableModel

MyCustomModelClass : QAbstractTableModel

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MyCustomModelClass has a reference to the person list. The table does not display the ID number of a person. But it is the only thing with which one can identify a person separately. If I want to search my table data with ID then how can I do that?