Cloud Code Parse.User.current（）return null

Question

当我在Cloud Code中使用此函数Parse.User.current()返回null。
我使用parseExpressCookieSession进行登录。
有何建议？

var express = require('express'); 
var expressLayouts = require('cloud/express-layouts'); 
var parseExpressHttpsRedirect = require('parse-express-https-redirect'); 
var parseExpressCookieSession = require('parse-express-cookie-session'); 

// Required for initializing enter code hereExpress app in Cloud Code. 
var app = express(); 

// Global app configuration section 
app.set('views', 'cloud/views'); 
app.set('view engine', 'ejs'); // Switch to Jade by replacing ejs with jade here. 
app.use(expressLayouts);   // Use the layout engine for express 
app.set('layout', 'layout'); 
app.use(parseExpressHttpsRedirect()); // Require user to be on HTTPS. 
app.use(express.bodyParser()); 
app.use(express.methodOverride()); 
app.use(express.cookieParser('helloworld')); 
app.use(parseExpressCookieSession({ 
    fetchUser: true, 
    cookie: { maxAge: 3600000 * 24 } 
}));  

Parse.Cloud.beforeSave('Menu', function(request, response) { 
    var Business = Parse.Object.extend('Business'); 
    var query = new Parse.Query(Business); 

    query.equalTo('profile', Parse.User.current().get('profile')); 
    query.find({ 
     success: function(business) { 
      console.log(business); 
      response.success(); 
     }, 
     error: function(error) { 
      response.error(error.message); 
     } 
    }); 
    }); 

    app.listen(); 

这是我用于登录的代码/注销

app.post('/login', function(req, res) { 
    Parse.User.logIn(req.body.username, req.body.password).then(function(user) { 
    // Login succeeded, redirect to homepage. 
    // parseExpressCookieSession will automatically set cookie. 
    res.redirect('/'); 
    }, 
    function(error) { 
    // Login failed, redirect back to login form. 
    res.redirect('/'); 
    }); 
}); 

// Logs out the user 
app.post('/logout', function(req, res) { 
    Parse.User.logOut(); 
    res.redirect('/'); 
}); 

Answer 1

这是一个老问题，但回答以供将来参考。

Parse.User.current（）在JavaScript SDK中用于客户端前。用户登录的WebApp，您可以使用该功能获取当前用户。

得到用户调用云代码功能或对一个对象进行的操作（beforeSave，afterSave，beforeDelete等）使用request.user财产它所包含的用户向Parse.com发出请求。

更多Parse.Cloud.FunctionRequest这里的细节：https://parse.com/docs/js/api/classes/Parse.Cloud.FunctionRequest.html

示例代码：

Parse.Cloud.beforeSave('Menu', function(request, response) { 
    var requestUser = request.user; 
    // instance of Parse.User object of the user calling .save() on an object of class "Menu" 

    // code cut for brevity 
});