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Field mapping is what makes one widget work for every vertical. You tell the Fleet widget which key in your payload means latitude, which means speed, and so on — once, in the config panel. No code, no redeploy.

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Dot-notation paths

Reach into nested objects with dots and into arrays with numeric indices:

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Core fields

The Map view needs a device ID and coordinates; everything else is optional.
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path
required
Unique identifier — e.g. deviceId, id, node, machine_id.
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path
e.g. gps.lat / gps.lng, or location.0 / location.1.
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path
Rotates the marker — e.g. heading, telemetry.yaw.
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path
Shown in the marker popup.
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path
Drives marker/row color (green / amber / red).

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Extra display fields

Any payload key can surface in the marker popup and detail panel — add an extra field with a label and a path (Passengers → meta.passengers, Battery → telemetry.battery).

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Same widget, four payloads

The same Fleet widget reads all of them — only the mapping differs.

Back to Fleet overview

The six views and the data contract.