在 React.js 中将 MongoDB 数据发送到数组中

Question

我想知道我在尝试将 MongoDB 数据导入 ReactJS 数组时是否遗漏了什么。这让我在过去一天左右的时间里被困住了，我一生都无法弄清楚。到目前为止，这是我正在做的尝试将其引入 （导入的数据是一个MongoDB集合，有两个条目，代码和名称）

    // find the course object with the id route parameter
    let course:(Course | undefined) = courses.find(item => item._id === id);
    let courseArray:any[] = [];
    const checkCheckboxes = () => {
        if (course !== undefined) {
            for (let i:number = 0;i < courses.length;i++) {
                courseArray.push({course.code + course.name});
            }
        }
    }

相关课程集：

// drop collection if already exists
db.courses.drop();
// insert new documents into collection
db.courses.insert([
    {
        "code":"WEBD1000",
        "name":"Website Development"
    },
    {
        "code":"PROG2700",
        "name":"Client Side Programming"
    },
    {
        "code":"INET2005",
        "name":"Web Application Programming I"
    },
    {
        "code":"WEBD3000",
        "name":"Web Application Programming II"
        
    },
    {
        "code":"PROG3017",
        "name":"Full Stack Programming"
    },
    {
        "code":"APPD1001",
        "name":"User Interface Design & Development"
    },
    {
        "code":"WEBD3027",
        "name":"Developing for Content Management Systems"
    },
    {
        "code":"PROG1400",
        "name":"Intro to Object Oriented Programming"
    },
    {
        "code":"PROG1700",
        "name":"Logic and Programming"
    }
]);

有什么想法吗？

Answer 1

不妨试试这个：

let course:(Course | undefined) = courses.findOne({_id: ID_GOES_HERE});