javascript - 如何通过将模式引用推送到用户的数组字段来更新用户对象

Question

我的user架构有一个Notifcation对象数组。我想通过电子邮件查找用户，然后通过添加新的通知对象来更新用户的通知字段。我现在拥有的代码不会返回错误，但它也不会使用新通知更新用户的通知字段。

        var notification = { type: data.notification_type, from: socket.request.user._id };
        notification = new Notification(notification);

        User.update({ email: data.to }, { $push: { notifications: notification } }, function(err, model) {
            if (err) console.log(err);
        }); 

用户架构

var UserSchema = new Schema({
    firstName: {
        type: String,
        trim: true,
        default: '',
        validate: [validateLocalStrategyProperty, 'Please fill in your first name']
    },
    lastName: {
        type: String,
        trim: true,
        default: '',
        validate: [validateLocalStrategyProperty, 'Please fill in your last name']
    },
    organization: {
        type: String,
        trim: true,
        default: '',
        required: 'Please fill in an organization name'
    },
    position: {
        type: String,
        trim: true,
        default: '',
        required: 'Please fill in the title of your position'
    },
    displayName: {
        type: String,
        trim: true
    },
    email: {
        type: String,
        trim: true,
        default: '',
        validate: [validateLocalStrategyProperty, 'Please fill in your email'],
        match: [/.+\@.+\..+/, 'Please fill a valid email address']
    },
    username: {
        type: String,
        unique: 'testing error message',
        required: 'Please fill in a username',
        trim: true
    },
    password: {
        type: String,
        default: '',
        validate: [validateLocalStrategyPassword, 'Password should be longer']
    },
    salt: {
        type: String
    },
    provider: {
        type: String,
        required: 'Provider is required'
    },
    providerData: {},
    additionalProvidersData: {},
    roles: {
        type: [{
            type: String,
            enum: ['user', 'admin']
        }],
        default: ['user']
    },
    updated: {
        type: Date
    },
    created: {
        type: Date,
        default: Date.now
    },
    /* For reset password */
    resetPasswordToken: {
        type: String
    },
    resetPasswordExpires: {
        type: Date
    },
    notifications: [{
        type: Schema.ObjectId,
        ref: 'Notifcation'
    }]
});

Answer 1

您可以使用 findOneAndUpdate 而不仅仅是 update 。首先，您必须找到使用您的条件，然后推送您的通知。我希望这会有所帮助

var notification = { type: data.notification_type, from:      socket.request.user._id };
    notification = new Notification(notification);

    User.findOneAndUpdate(
        { email: data.to }, 
        { $push: 
           { notifications: notification }
        }, 
        function(err, model) {
        if (err) console.log(err);
    });