用户之间的流星私信 [英] Meteor private messaging between users

问题描述

现在我有一个在 Meteor 中开发的工作消息系统，用户可以在其中相互发送私人消息.

Right now I have a working messaging system developed in Meteor where users can send private messages to each other.

服务器看起来像这样:

// .. lot of code
Meteor.publish("privateMessages", function () {
    return PMs.find({ to: this.userId });
});
PMs.allow({
    insert: function(user, obj) {
        obj.from = user;
        obj.to = Meteor.users.findOne({ username: obj.to })._id;
        obj.read = false;
        obj.date = new Date();
        return true;
    }
});
// .. other code

当用户订阅privateMessages时，他得到一个如下所示的mongo对象:

When the user subscribes to privateMessages, he gets a mongo object that looks like this:

{ "to" : "LStjrAzn8rzWp9kbr", "subject" : "test", "message" : "This is a test", "read" : false, "date" : ISODate("2014-07-05T13:37:20.559Z"), "from" : "sXEre4w2y55SH8Rtv", "_id" : "XBmu6DWk4q9srdCC2" }

如何更改对象以返回用户名而不是用户 ID?

How can I change the object to return the username instead of the user id?

推荐答案

您需要以类似于将 username 更改为 _id 的方式执行此操作.你可以创建一个效用函数:

You need to do so in a way similar to how you changed username to _id. You can create a utility function:

var usernameById = function(_id) {
  var user = Meteor.users.findOne(_id);
  return user && user.username;
};

如果您不想为每条消息轮询 minimongo，只需在消息对象中包含 username 而不是 _id.由于 username 是唯一的，所以它们就足够了.

If you don't want to poll minimongo for each message, just include username instead of _id inside your message object. Since username is unique, they will be enough.

如果在您的应用中您允许用户更改用户名，最好也保留_id 以作为记录.

If in your app you allow users to change username, it might be a good idea to also keep the _id for the record.

在我使用过的一个较大的应用程序中，我们将用户的 _id 保留在模型中(以创建指向个人资料的链接等)，并缓存他的 profile.name(用于显示目的).

In one of larger apps I've been working with we kept user's _id in the model (to create links to profile etc.), as well as cached his profile.name (for display purposes).

这篇关于用户之间的流星私信的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！