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onListConstants

Last updated 23/07/2026

Constant listing handler​

This example demonstrates how the

onListConstants
callback retrieves all constants contained within a constant folder from the host application's persistent storage. Once the constants have been retrieved, they are returned to the widget through the

onResponse
callback.
TypeScript
Constant listing handler
onListConstants: (folder: DIQ_ConstantFolder, onResponse: (result: DIQ_Result, constants: Array<DIQ_Constant> | null) => void) => {

    // Retrieve all constants for the folder
    const constants = database.getConstants(folder.key);

    // Return the constants to the widget
    onResponse(
        { success: true },
        constants
    );

},