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Contributor
Posts: 28
Registered: ‎02-07-2013
My Device: blackberry 10
My Carrier: vodafone
Accepted Solution

cascades passing GroupDataModel from c++ to qml problem!

Hi,

 I am trying to access GroupDataModel data from c++ to qml!

 

I tried,

 

in hpp,

public Q_SLOTS:

bb::cascades::GroupDataModel load_datamodel(const QString& txprofile);

 


in cpp,

bb::cascades::GroupDataModel ApplicationUI::load_datamodel(const QString& txprofile)

{

GroupDataModel model;

.......

model.insertList(list.value<QVariantList>());

return model;

}

 

But its not working! Please help me!

 

BlackBerry Development Advisor
Posts: 15,693
Registered: ‎07-09-2008
My Device: BlackBerry PRIV
My Carrier: Bell

Re: cascades passing GroupDataModel from c++ to qml problem!

I assume youare not seeing changes when the DataModel is updated?  I recommend exposing it to QML as a Q_PROPERTY like this:  

 

Q_PROPERTY(bb::cascades::DataModel* model READ model NOTIFY dataModelChanged)

public:

	YourClass(QObject *parent = 0);

Q_SIGNALS:

	/*
	 * This signal is emitted the data model is updated.
	 */
	void dataModelChanged();

private:

	bb::cascades::DataModel* model() const;

	bb::cascades::GroupDataModel* mDataModel;

 

On the C++ side you could then fire the dataModelChanged signal after the model was changed and you want to refresh your UI.

 

Mark Sohm
BlackBerry Development Advisor

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Highlighted
Developer
Posts: 16,984
Registered: ‎07-29-2008
My Device: Z10 LE, Z30, Passport
My Carrier: O2 Germany

Re: cascades passing GroupDataModel from c++ to qml problem!

we usually create the datamodel in c++ and use a q_invokable method to populate it from qml.
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