Node JS + Mongo DB：ValidationError：用户验证失败：用户名：路径`username`是必需的

Question

当我尝试使用 Mongoose 将新文档（用户）保存/创建到 Mongo DB 时，尽管提供了具有正确数据类型的所有值，但仍收到以下验证错误：

ValidationError：用户验证失败：用户名：路径username是必需的。

我是 Node JS 和 Mongo DB 的初学者。因此，我无法理解出了什么问题。

我还添加了以下模块：

• 表达
• 蒙戈
• 猫鼬
• 身体解析器

请参阅下文了解更多详情：

详细错误：

{
"errors": {
    "username": {
        "message": "Path `username` is required.",
        "name": "ValidatorError",
        "properties": {
            "type": "required",
            "message": "Path `{PATH}` is required.",
            "path": "username"
        },
        "kind": "required",
        "path": "username",
        "$isValidatorError": true
    }
},
"_message": "User validation failed",
"message": "User validation failed: username: Path `username` is required.",
"name": "ValidationError"
}

用户架构/模型：

var mongoose = require("mongoose");

var userSchema = new mongoose.Schema({
firstName: {
    type: String,
    required: true
},
lastName: {
    type: String,
    required: true
},
username: {
    type: String,
    unique: true,
    required: true
},
password: {
    type: String,
    required: true
}
});

mongoose.model("User", userSchema, "users");

用户控制器：

var register = function (req, res) {

console.log("Registering User.");

var firstName = req.body.firstname;
var lastName = req.body.lastname;
var userName = req.body.username;
var password = req.body.password;

User
    .create({
        firstName: firstName,
        lastName: lastName,
        userName: userName,
        password: password
    }, function (err, user) {
        if (err) {
            console.log("Error creating User: ", err);
            res
                .status(400)
                .json(err)
        } else {
            console.log("User Created: ", user);
            res
                .status(201)
                .json(user)
        }
    })
};

我只是不明白，为什么我会收到此验证错误。任何人都可以请指导我完成这个。谢谢您的帮助。

Answer 1

你打错了：

User
    .create({
        firstName: firstName,
        lastName: lastName,
        username: userName, // the property is "username" in model
        password: password
    }, function (err, user) {
        if (err) {
            console.log("Error creating User: ", err);
            res
                .status(400)
                .json(err)
        } else {
            console.log("User Created: ", user);
            res
            .status(201)
            .json(user)
        }
    })
};