[Interest] Expose C++ singleton to JavaScript file?

[Jason H]

Alexey saved the day:

https://doc.qt.io/qt-5/qtqml-javascript-imports.html#importing-a-qml-module-from-a-javascript-resource

Thanks!


> Sent: Thursday, June 24, 2021 at 10:25 AM
> From: "Jason H" <jhihn at gmx.com>
> To: "interestqt-project.org" <interest at qt-project.org>
> Subject: [Interest] Expose C++ singleton to JavaScript file?
>
> I attempted to google this, but I kept getting hits for the wrong thing.
>
> I have a C++ QObject class ("ApplicationDatabase") exposed to QML via
> qmlRegisterSingletonInstance("com.company", 1, 0, "ApplicationDatabase", &m_applicationDatabase);
>
> I have a app.js (.pragma library) that is included in many QML components (X.qml) I want the to use the slots/Q_INVOKABLE functions in the app.js:
>
> i.e.
> function userRoles(user) {
>    return ApplicationDatabase.userRoles(user);
> }
>
> However when trying to run this, I get:
> qrc:/app.js:165: ReferenceError: ApplicationDatabase is not defined
>
>
> How do I make the .js file aware of the singleton?
>
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