Access roles without naming it in QAbstractListModel. How?

bogong

Hello all!
Is there any way to access roles in QAbstractListModel without naming it? I mean something like access to array[index]:

public:
    enum Roles {
        Role0 = Qt::UserRole + 1,
        Role1,
        Role2,
        Role3,
        ...
    };

    ...

   QHash<int, QByteArray> roleNames() const {

       QHash<int, QByteArray> roles = QAbstractListModel::roleNames();
       roles[Role0] = "Role0";
       roles[Role1] = "Role1";
       roles[Role2] = "Role2";
       roles[Role3] = "Role3";
       ...

       return roles;
   }

In this example defined exact roles in model. I want to create universal model where I can access to it by something like position-index in array. Is there any way to make it possible? Or at least update roleNames dynamically via variable or parameter in class. Something like example below.

*.h file:

public:
	
	explicit ATableViewModel(QObject *parent = nullptr);
	virtual ~ATableViewModel(void);
		
	QHash<int, QByteArray> roleNames() const;
		
private:
	
	QHash<int, QByteArray> pRoleNames = {};

*.cpp

QHash<int, QByteArray> ATableViewModel::roleNames() const {
	
	return pRoleNames;
}

AxelVienna

You can use a 1-dimensional role and fill it with a JSON object, document or array which gives you even more flexibility than a single array.
https://doc.qt.io/qt-5/qvariant.html#toJsonObject

bogong

@AxelVienna said in Access roles without naming it in QAbstractListModel. How?:

https://doc.qt.io/qt-5/qvariant.html#toJsonObject

Thx. Issue closed. Example published.