Question

我很容易并成功地将单个模型传递到我的一条快速路线中的视图中：

exports.locations = function(req, res){
    Location.find(function(err, results) {
        res.render('locations', { title: 'Locations', locations: results });
    });
};

我有另一条路线需要将2个结果集传递到视图中，我该怎么做？我试过这样做，但它似乎没有起作用：

exports.locationdetail = function(req, res) {
    var packages = Package.find();
    Location.findById(req.params.id, function(err, result) {
        res.render('location-detail', { title: 'Location Details', location: result, packages: packages });
    });
};

修改1

我得到的错误是：

Cannot read property 'name' of undefined

我的模型看起来像这样：

var mongoose = require('mongoose')
   ,Schema = mongoose.Schema;

var PackageSchema = new mongoose.Schema({  
    name: String,
    prev_package: String,
    featured: Boolean,
    services: Array
});

module.exports = mongoose.model('Package', PackageSchema);

我在另一种观点中使用这个模型，一切都像冠军一样。

Answer 1

var mongoOp     =   require("./models/mongo");
var async = require('async');

router.get("/",function(req,res){
    var locals = {};
    var userId = req.params.userId;
    async.parallel([
        //Load user data using Mangoose Model 
        function(callback) {
             mongoOp.User.find({},function(err,user){
                if (err) return callback(err);
                locals.user = user;
                callback();
            });
        },
        //Load posts data using Mangoose Model
        function(callback) {
                mongoOp.Post.find({},function(err,posts){
               if (err) return callback(err);
                locals.posts = posts;
                callback();
            });
        }
    ], function(err) { //This function gets called after the two tasks have called their "task callbacks"
        if (err) return next(err); //If an error occurred, we let express handle it by calling the `next` function
        //Here `locals` will be an object with `user` and `posts` keys
        //Example: `locals = {user: ..., posts: [...]}`


         res.render('index.ejs', {quotes: locals.user,userdata: locals.posts})
    });


});

Answer 2

所以，看起来这是另一个异步的“陷阱”。把它放到一个嵌套的回调中就可以了：

exports.locationdetail = function(req, res) {
    Location.findById(req.params.id, function(err, result) {
        Package.find(function (err, results) {
            res.render('location-detail', { title: 'Location Details', location: result, packages: results });
        });
    });
};

如何将多个模型传递到视图中？

2 个答案: