MongoError：将更新应用于文档后

Question

我需要一些帮助。

我试图对这条路线进行邮寄要求：

router.post('/admin/editFront', isLoggedIn, (req, res, next) => {
    req.checkBody('title', 'Title is require').notEmpty();
    req.checkBody('aboutUs', 'About us section is require').notEmpty();
    req.checkBody('email', 'Check email again').notEmpty().isEmail();

    let errors = req.validationErrors();
    if(errors) {
        req.flash('error_msg', errors.msg);
        console.log(errors);
    }

    let cube = ({
        title: req.body.cubeTitle,
        img: req.body.cubeImg,
        info: req.body.cubeInfo
    })

    let front = new FrontInfo();
    front.title = req.body.title;
    front.aboutUs = req.body.aboutUs;
    front.email = req.body.email;
    front.phone = req.body.phone;
    front.cube.push(cube);
    // front.socialNet.push(req.body.social);

    console.log(front);

    FrontInfo.findOneAndUpdate({email: req.body.email}, front, { upsert: true }, (err, doc) => {
        if(err) console.log(err);
        else {
            req.flash('success', doc);
            res.redirect('/editFront');
        }
    });
});

这是我的架构：

let cube = new Schema({ 
    title: { type: String },
    img: { type: String },
    info: { type: String }    
});

let socialNet = new Schema({
    title: { type: String, required: true },
    link: { type: String, required: true },
    icon: { type: String, required: true }
});

let FrontInfo = new Schema({
    title: { type: String, required: true },
    aboutUs: {type: String, required: true},
    phone: {type: String, minlength: 9, required: true},
    email: {type: String, required: true},
    cube: {type: [cube], default: []},
    updateDate: {type: Date, default: Date.now}
});

所以，如果我尝试创建一个新的Schema，它就可以了。 但如果我尝试更新新的，我会收到此错误：

我花了很长时间试图修复它！ 请帮帮我朋友

Answer 1

当您使用let front = new FrontInfo();时，您正在创建一个拥有自己的_id的新文档。此_id与您正在更新的文档的_id不同。您不能更新_id字段，这就是您收到错误消息的原因

  

（不可变）字段＆＃39; _id＆＃39;被发现被改为_id

因此，您应该只创建一个新的普通Javascript对象，而不是创建一个新的Mongoose文档：

let front = {};
front.title = req.body.title;
front.aboutUs = req.body.aboutUs;
front.email = req.body.email;
front.phone = req.body.phone;
front.cube = [];
front.cube.push(cube);

这仅包含您已列出的字段。