onListDimensions

Last updated 8/03/2026

Dimension listing handler

This example demonstrates how the

onListDimensions

callback sends a request using the Fetch API to retrieve dimensions for a dimension group revision. Once the request completes, the result and returned dimensions are provided to the widget through the

onResponse

callback.

Dimension listing handler

onListDimensions = async function(group: DIQ_DimensionGroupRevision, onResponse: (result: DIQ_Result, dimensions: Array<DIQ_Dimension> | null) => void) {
    try {
        const res = await fetch(`/api/dimension-groups/${group.key}/dimensions`);

        if (!res.ok) {
            throw new Error(`HTTP ${res.status}`);
        }

        const dimensions = await res.json();

        onResponse(
            { ok: true },
            dimensions
        );

    } catch (err) {
        onResponse(
            {
                ok: false,
                message: err.message || "Failed to fetch dimensions"
            },
            null
        );
    }
};