猫鼬：查找，修改，保存 [英] Mongoose: Find, modify, save

问题描述

我有一个Mongoose 用户型号：

I have a Mongoose User model:

var User = mongoose.model('Users',
    mongoose.Schema({
        username: 'string',
        password: 'string',
        rights: 'string'
    })
);

我想找一个用户的实例模型，修改它的属性，并保存更改。这就是我的尝试（这是错误的！）：

I want to find one instance of the User model, modify it's properties, and save the changes. This is what I have tried (it's wrong!):

User.find({username: oldUsername}, function (err, user) {
    user.username = newUser.username;
    user.password = newUser.password;
    user.rights = newUser.rights;

    user.save(function (err) {
        if(err) {
            console.error('ERROR!');
        }
    });
});

查找，修改和保存用户实例的语法是什么 model？

What is the syntax to find, modify and save an instance of the User model?

推荐答案

为什么不使用 Model.update ？毕竟你没有使用找到的用户除了更新它的属性：

Why not use Model.update? After all you're not using the found user for anything else than to update it's properties:

User.update({username: oldUsername}, {
    username: newUser.username, 
    password: newUser.password, 
    rights: newUser.rights
}, function(err, numberAffected, rawResponse) {
   //handle it
})

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