Converting QJsonObject to QJsonArray

[Anticross]

Hi to all. I have some QJsonObject wich has hierarchy inside. I need to convert it to QJsonArray and write to a file. But when I open written file I see array with all 'null' values. What could be wrong ?

//your code here
```QJsonArray ObjectToArray( const QJsonObject &json_obj ) const 
{
	QJsonArray json_arr;
	QJsonObject::const_iterator iter = json_obj.begin();		
	
	while (iter != json_obj.end())
	{
		iter++;	

		if ( iter->isObject() ) 
		{
			json_arr.append(ObjectToArray(iter->toObject()));
		}
		else
		{
			json_arr.append(*iter);
		}
	}
	
	return json_arr;
}

Writing to file like this:
//your code here

        QFile output_file( file_path );
	if (output_file.open( QIODevice::WriteOnly) ) {
          const auto json_array= ObjectToArray( some_json_obj);
          output_file.write( QJsonDocument(json_array).toJson( QJsonDocument::Compact) );
          output_file.close();
        }

[Anticross]

@Anticross said in Converting QJsonObject to QJsonArray:

*iter

when I print my *iter in that method with qDebug(), I've got QJasonValue(udifined). Why ?

[Anticross]

I've got it. The problem was in iterator, actually iter++ must be in the end of loop.