为什么猫鼬只创建id而不是实际数据

Question

每当我尝试将模式保存到数据库时，它仅保存id，而不保存我想要保存的实际数据。我通过调试对其进行了检查，然后再看到一个问题，即req.body中不包含任何查询。如何解决这个问题

const userSchema = new mongoose.Schema({
    name: { 
        type: String
    },

    age: {
        type: Number,
        required: false,
        validate(value) {
            if (value < 18) {
                throw new Error("age Must be greater than 18")
            }
        }
    },

    password: {

        type:String,

        minlength: 7,
        validate(value) {
            if (value === 'password') {
                throw new Error("Password can not be named password")
                //console.log(`password can't be password`)

            }
        }

    },

    email: {

        type: String,
        validate(value) {
            if (!validator.isEmail(value)) {
                return console.log('invalid Email!')
            }
        }
    }
})

userSchema.statics.findByValues = async (email, password) => {
    const user = await User.findOne({ email });

    if (!user) {
        throw new Error("unable to login");
    }

    const isMatch = await bcrypt.compare(password, user.password)

    if (!isMatch) {
        throw new Error("unable to login");
    }
}

userSchema.pre('save', async function (next) {

    const user = this

    if (user.isModified('password')) {
        user.password = await bcrypt.hash(user.password, 8)
    }


    next();

})
const User = mongoose.model('User', userSchema)


router.post('/user', async (req, res)=>{
    const user = new User(req.body);
    try{`enter code here`

        await user.save();
        res.send(user);
        console.log(req.body)
    } catch(e){

        res.status(404).send(e);
    }
})

这是用户架构模型