I have an app were I need to fetch random questions from a database and expose them to qml dynamically.

So I created a class to store each dataset:


Qt Code: 
  1. class Question : public QObject
  2. {
  3.     Q_OBJECT
  4.     Q_PROPERTY(int id READ id)
  5.     Q_PROPERTY(QString askedQuestion READ askedQuestion)
  6. public:
  7.     Question(int id,
  8.              QString askedQuestion);
  9.  
  10.     int getId() const;
  11.     QString getAskedQuestion() const;
  12.  
  13. private:
  14.     int mId;
  15.     QString mAskedQuestion;
  16. };
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And fill them in annother class. In reality it is derrived from an SQLDatabaseModel:



Qt Code: 
  1. class QuestionGenerator : public QObject
  2. {
  3.     Q_OBJECT
  4. public:
  5.     explicit QuestionGenerator(QObject *parent = nullptr);
  6.  
  7.     Q_INVOKABLE QVector<Question> getRandomQuestions(int count) const
  8.     {
  9.         // simplified in reality we fetch random questions from a database. 
  10.         // the point is we need to add Questions to the vector
  11.         // but this does not work since QObject based items cannot get copied
  12.         QVector<Question> questions;
  13.         questions.reserve(count);
  14.  
  15.         // add questions to vector
  16.  
  17.         return questions;
  18.     }
  19. };
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I want to expose `Question` to QML to use the data from `Question` there so I need to derive it from `QObject`.

When I fetch the Questions randomly in `QuestionGenerator` it does not work because `QVector` does net the not supported copy constructor of `QObject`.

So how can I fix this?


Again what I want:

Fetch n Questions in C++ and expose them to QML so I can use the data to display.