checktheroads-hyperglass/ui/components/QueryLocation.js

import React from "react";
import ChakraSelect from "~/components/ChakraSelect";

const buildLocations = networks => {
    const locations = [];
    networks.map(net => {
        const netLocations = [];
        net.locations.map(loc => {
            netLocations.push({
                label: loc.display_name,
                value: loc.name,
                group: net.display_name
            });
        });
        locations.push({ label: net.display_name, options: netLocations });
    });
    return locations;
};

export default ({ locations, onChange }) => {
    const options = buildLocations(locations);
    const handleChange = e => {
        const selected = [];
        e &&
            e.map(sel => {
                selected.push(sel.value);
            });
        onChange({ field: "query_location", value: selected });
    };
    return (
        <ChakraSelect
            size="lg"
            name="query_location"
            onChange={handleChange}
            options={options}
            isMulti
        />
    );
};