Use Cases

Enrich events with additional information

Suppose you want to set the context.os field to Android for all events, irrespective of the actual platform RudderStack tracks the event from. To do this, you can write a simple transformation as shown:

export function transformEvent(event, metadata) {
    event.context.os = { name: "Android"};
    return event;
}

def transformEvent(event, metadata):
    event['context']['os'] = { "name": "Android"}
    return event

The transformEvent function overrides the event’s context.os.name and sets it as Android, as shown:

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