Creating a Class for another widget in my .kv file

[Eric B]

When I try to make a new class for my RBox widget, it gives me the error: AttributeError: 'RBox' object has no attribute 'test', I have no clue why. I only attached what I think should be the relevant code.

My kivy code:

<RBox@GridLayout>:
    cols: 2
    text: ''
    group: ''
    RCheckBox:
        id: cb
        group: root.group
        on_active: root.test()

My python code:

class RBox:
    def test(self):
        print('test')

class FormScreen(BoxLayout):
    #a bunch of other code that works
class MainApp(App):
    def build(self):
        return FormScreen()


if __name__ == "__main__":
    MainApp().run()

[Elliot Garbus]

If you are going to have attributes in Python, you do not used a dynamic rule.

Change: <RBox@GridLayout>:

To: <RBox>:

 

And

 

Change: class RBox:
to: class RBox(GridLayout):

 

If that does not fix the issue post a small executable example.

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[Eric B]

Ok, thanks so much it worked :D, I have been struggling with this for about a week :P

[Elliot Garbus]

😊

 

From: Eric B
Sent: Monday, March 9, 2020 11:28 AM
To: Kivy users support

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