(De-)serializing QObject tree

[arietto]

How can QObject derived object with child objects be used with QtJsonSerializer? I mean that QObject already has children() getter. Is it possible to reuse embedded child-parent methods in collaboration with Q_PROPERTY instead of explicit adding m_children field?

[Skycoder42]

Yes it is. A property can also be defined with explicit getters and setters. For your case that would be:

Q_PROPERTY(QList<QObject*> children READ children WRITE setChildren)

You will have to implement the setChildren yourself:

void setChildren(const QList<QObject*> &children) {
    for(auto child : children)
        child->setParent(this);
}

Please note that in order for this to work, all of the children your serialized object has must be polymorphic! Otherwise the childrens properties won't be serialized. See QJsonSerializer::polymorphing for more details.

[Skycoder42]

Was I able to answer your question? If yes please close the issue

[arietto]

Yes, thank you.