问最初填充的道具值，然后没有出现在react中。

EN

import React, { useState, useEffect } from 'react';
import Loader from "react-loader-spinner";
import QueryHelper from "../Utilities/QueryHelper";
import Select from "react-select";

function SecurityLevelSelect({security_levels, onSecurityLevelChange}) {
    console.log("outside parseResults");
    console.log(security_levels); // shows expected array of props.security_level shortCode values

    const [selectedItems, setSelectedItems] = useState([]);
    const [items, setItems] = useState([])
    const [error, setError] = useState(null);
    const [isLoaded, setIsLoaded] = useState(false);

    const helper = new QueryHelper();

    const handleChange = (e) => {
        onSecurityLevelChange(e.target.value);
    }

    useEffect(() => {
        fetchData();
    }, [])

    const fetchData = () => {
        setIsLoaded(false);

        helper.fetchData('securitylevel')
            .then(
                (result) => {
                    setIsLoaded(true);
                    setItems(parseResults(result.results));
                },
                (error) => {
                    setIsLoaded(true);
                    setError(error);
                }
            )
    }

    const parseResults = (results) => {
        let data = [];
        let selected = [];

        console.log("inside parseResults");
        console.log(security_levels); // shows [] as value of security_levels

        results.forEach(result => {
            console.log(result.shortCode);
            let datum = {
                value: result.shortCode,
                label: result.name
            }

            if (security_levels.includes(result.shortCode)) {
                console.log(result.shortCode + ' is selected');
                selected.push(datum)
            }
            data.push(datum)
        });

        setSelectedItems(selected); // sets it to []
        return data;
    }

    // then render some stuff
    return (
        <some_random_content />
    ); 
}

export default SecurityLevelSelect;