Reading data from TableView with C++ model in it.

Verhoher

Hello,

I'm trying to read data in a specific, selected tableView row to pass it further. The view builds as:

            TableView {
                id:tblUsersAdventures
                anchors.fill: parent
                model: mainUserHandle.usersAdventuresTable
                TableViewColumn {
                    id: colAdventure
                    role: "name"
                    title: "Adventure Name"
                    width: rctUsersAdventures.width * 0.9
                }
                TableViewColumn {
                    id: colAward
                    role: "award"
                    title: "Award"
                    width: rctUsersAdventures.width * 0.099
                }
                onClicked: {
                    console.log("clicked to see adventure " + currentRow)
                    console.log("model.get(currentRow).name " + model.get(currentRow).name)   
}

and all data shows correctly from

mainUserHandle.usersAdventuresTable

which is a QList<QObject *> of:

class AdventureOnUserData : public QObject
{
    Q_OBJECT
    Q_PROPERTY(int adventureId READ adventureId WRITE setAdventureId NOTIFY adventureIdChanged)
    Q_PROPERTY(QString name READ name WRITE setName NOTIFY nameChanged)
    Q_PROPERTY(int award READ award WRITE setAward NOTIFY awardChanged)
    Q_PROPERTY(int status READ status WRITE setStatus NOTIFY statusChanged)
    Q_PROPERTY(QString desc READ desc WRITE setDesc NOTIFY descChanged)
    Q_PROPERTY(QString clue READ clue WRITE setClue NOTIFY clueChanged)

public:
...

When I try to access the data in the model with

                    console.log("model.get(currentRow).name " + model.get(currentRow).name)

I get an error as:

TypeError: Property 'get' of object AdventureOnUserData(0x1c44c2a06a0),AdventureOnUserData(0x1c44c2a0ea0),AdventureOnUserData(0x1c44c2a15a0),AdventureOnUserData(0x1c44c2a0e20),AdventureOnUserData(0x1c44c2a11a0),AdventureOnUserData(0x1c44c29fda0),AdventureOnUserData(0x1c44c2a14a0) is not a function

How should I fetch the selected data here?

p3c0

Hi @Verhoher,
The error says it all. Are you sure your class AdventureOnUserData contains get function ? I think you have mistaken it w.r.t ListModel functions ?

Verhoher

@p3c0 said:

The error says it all. Are you sure your class AdventureOnUserData contains get function ?

Yes seems that I have misunderstood something. so a way to resolve this would be add something like

Q_INVOKABLE QVariant get(int p_index)
{
    return QVariant::fromValue<usersAdventuresTable*>((l_userAdventureTable*)this->at(p_index));
}

to mainUserHandle and call that in the onClicked? Will this work?

p3c0

@Verhoher
And where are you going to add this get method ? I think what you are trying to use is QObjectList-based model.
You will find an example there which explains how to access the data from model. Particularly this line:
color: model.modelData.color

The properties of the object are not replicated in the model object, as they are easily available via the modelData object.

Verhoher

@p3c0 said:

I think what you are trying to use is QObjectList-based model.

Yes, you are right initially I was trying to do it by that example, but didn't manage to fully apply it for my scenario because I couldn't get

    ctxt->setContextProperty("myModel", QVariant::fromValue(dataList));

to work, so I added the model as a QProperty as QList<QObject *> under a QObject I use in my App, and access it through it.

and yeah it turns out I can just use

model[currentRow].name

to access it straight in QML, so the easiest solution. This probably was obvious, but I'm new to QML and didn't think of it.

Thanks for the help :)

p3c0

@Verhoher You're Welcome. Happy Coding :)