如何让 Meteor.user() 在服务器端返回? [英] How to get Meteor.user() to return on the server side?

问题描述

在名为/server/main.js 的文件中(以确保最后加载).

in a file called /server/main.js (in order to ensure it is loaded last).

console.dir(Meteor.user());

抛出:

Error: Meteor.userId can only be invoked in method calls. Use this.userId in publish functions.

所以我尝试在同一个文件中使用:

So I try to use, in the same file:

console.dir(this.userId);

返回:

undefined

所以，不要放弃，我在想没关系，我只需从标题中的 cookie 中读取即可":

so, not giving up, I'm thinking "that's fine I'll just read from the cookies in the header":

var connect = Npm.require('connect');

__meteor_bootstrap__.app.use(connect.query()).use(function(req, res, next) {
    console.dir(req.headers);
    next();
});

.... 除了 'cookie: 'uvf=1'' 之外，在 cookie 方面不返回任何内容

.... returns nothing in terms of cookies except for 'cookie: 'uvf=1''

我不知道该得出什么结论 - 这是毫无意义的，因为我可以否则使用 Meteor.Account 框架就好了，读取/设置用户属性等.服务器清楚地知道用户，并且清楚地知道当前用户已登录.

I'm not sure what to conclude - this is senseless as I can otherwise use the Meteor.Account framework just fine, read/set user properties, etc. The server is clearly aware of the user, and the current user clearly logged in.

我完全不知所措，任何解释/提示/指针将不胜感激.

I'm at a complete loss, any explanation / hint / pointer would be greatly appreciated.

推荐答案

必须在客户端发出请求的地方使用 Meteor.user()(例如 Meteor.methods 或 Meteor.publish).

You have to use Meteor.user() in a place where a request is made from the client (such as a Meteor.methods or a Meteor.publish).

它不能放在其他任何地方，因为meteor 不会知道用户应该绑定到的代码中的那个点.如果有一个地方从客户端发出某种形式的请求，它可以这样做:

It can't be placed anywhere else because meteor wouldn't know at that point in the code the user is supposed to bound to. If there is a place a request of some form is made from the client it can do this:

在 Meteor.publish 中:

In a Meteor.publish:

Meteor.publish("collection", function() {
    //returns undefined if not logged in so check if logged in first
    if(this.userId) {
        var user = Meteor.users.findOne(this.userId);
        //var user is the same info as would be given in Meteor.user();
    }
});

在 Meteor.methods 中:

In a Meteor.methods:

Meteor.methods({
    "test":function() {
        //should print the user details if logged in, undefined otherwise.
        console.log(Meteor.user());
    }
}

在服务器端路由上使用 Meteor.user():

To use Meteor.user() on a server side route:

您需要Meteor router通过meteorite 允许您拥有服务器呈现的页面.(通过mrt install router 安装)

You need Meteor router installed as a package via meteorite to allow you to have a server rendered page. (installed via mrt install router)

然后服务器端路由可以处理 Web 请求:

A server side route could then handle the web request:

 Meteor.Router.add('/awebpage', function(id) {
     var userId = this.params.userid;
     var logintoken = this.params.logintoken;
     var isdirect = this.param.direct;
     var user = Meteor.users.findOne({_id:userId,"services.resume.loginTokens.token":logintoken});
     if(user) {
         //the user is successfully logged in

         return "You, "+user.profile.name+", are logged in!";
     }
     else
     {
         if(isdirect) {
             return "<h3>Loading</h3><script>window.location.href="/awebpage?direct=true&userid="+localStorage.getItem("Meteor.userId") +"&logintoken="+localStorage.getItem("Meteor.loginToken")</script>";
         }
         else
         {
             return "Not logged in"
         }
     }
 });

所以现在当你访问 /awebpage 时，它会检查用户是否登录并在他们登录时做你想做的事情.最初有一个重定向来将数据从 localstorage 中继回来到 URI.

So now when you visit /awebpage it would check whether the user is logged in and do the thing you want when they are logged in. Initially there is a redirect to relay the data from localstorage back to the URI.

这篇关于如何让 Meteor.user() 在服务器端返回?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！