Change values in a json file
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Hi!
The only way I found is to read the file, change its contents and write back the whole file. I.e.:@ QFile file("filename.json");
file.open(QIODevice::ReadOnly);
QByteArray json = file.readAll();
file.close();
QJsonDocument doc(QJsonDocument::fromJson(json));
QJsonObject root(doc.object());
// change something
doc.setObject(root);
file.open(QIODevice::WriteOnly);
file.write(doc.toJson(QJsonDocument::Indented));
file.close();
@Is this the recommended way?
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Hi,
[quote author="Mark" date="1424095290"]
The only way I found is to read the file, change its contents and write back the whole file....
Is this the recommended way?[/quote]Yes. There's no other way. (But you could store a copy of the contents, so that you don't have to read from the file every time you want to update it)
