Node.js 如何使用mongoose（express、nodejs）连接两个表（文档）并获取不匹配的数据？

我有两个表（文档）报价和应用报价，我需要合并并从报价表中获取不匹配的数据。 例如，我在数据库中存储了一些对象。我正在为此使用meanjs我不知道我在哪里可以为连接两个表（文档）编写路由，我在哪里可以为连接编写函数请有人帮助我完成这项工作

$scope.offers = [{

        id: "1",
        storeid: "986745",
        couponname: "healthy breakfast offer",
        offermessage: "50% offer for break fast",
        noofcoupon: "10"
    }, {
         id: "2",
        storeid: "886745",
        couponname: "get 50% lunch",
        offermessage: "50% offer for Lunch",
        noofcoupon: "10"
    }, {
         id: "3",
        storeid: "690745",
        couponname: "dinner damaka",
        offermessage: "50% offer for dinner",
        noofcoupon: "10"
    },
    {
         id: "4",
         storeid: "550745",
        couponname: "supper festiwal",
        offermessage: "80% offer for supper",
        noofcoupon: "10"
    },

    {
         id: "5",
         storeid: "690733",
        couponname: "eve damaka snaks",
        offermessage: "20% offer for snaks",
        noofcoupon: "10",
    }

    ] 

我已经存储了这样的数据

$scope.appliedoffers = [{

       id: "1",
        storeid: "986745",
        couponname: "healthy breakfast offer",
        offermessage: "50% offer for break fast",
        noofcoupon: "10",
    }, {
         id: "2",
         storeid: "690733",
        couponname: "eve damaka snaks",
        offermessage: "20% offer for snaks",
        noofcoupon: "10"
    }

    ]

例如，如果我们放置连接并获取不匹配的数据，那么在两个表中，这里应该只显示3个storeid

{
         id: "2",
        storeid: "886745",
        couponname: "get 50% lunch",
        offermessage: "50% offer for Lunch",
        noofcoupon: "10"
    }, {
         id: "3",
        storeid: "690745",
        couponname: "dinner damaka",
        offermessage: "50% offer for dinner",
        noofcoupon: "10"
    },
    {
         id: "4",
         storeid: "550745",
        couponname: "supper festiwal",
        offermessage: "80% offer for supper",
        noofcoupon: "10"
    },

我已经添加了我的路由和控制器，我不知道如何获取不匹配的数据。我已经添加了路由和控制器如何更改控制器以获取不匹配的数据

提供路线

'use strict';

    module.exports = function(app) {
        var users = require('../../app/controllers/users.server.controller');
        var offers = require('../../app/controllers/offers.server.controller');

        // Offers Routes
        app.route('/offers')
            .get(offers.list)
            .post(users.requiresLogin, offers.create);

        app.route('/offers/:offerId')
            .get(offers.read)
            .put(users.requiresLogin, offers.hasAuthorization, offers.update)
            .delete(users.requiresLogin, offers.hasAuthorization, offers.delete);

        // Finish by binding the Offer middleware
        app.param('offerId', offers.offerByID);
    };

提供控制器：用于获取函数

/**
 * Offer middleware
 */
exports.offerByID = function(req, res, next, id) { 
    Offer.findById(id).populate('user', 'displayName').exec(function(err, offer) {
        if (err) return next(err);
        if (! offer) return next(new Error('Failed to load Offer ' + id));
        req.offer = offer ;
        next();
    });
};

适用的优惠路线：

"

应用报价控制器：

/** *Appliedoffer中间件 */

---

我会在数据库端这样做，而且效率会更高

自从MongoDB（3.2）的最新版本以来，可以进行$lookUp，这实际上是一个左外连接

从mongodb.org下载最新版本的mongodb，并在此处查看$lookUp文档以执行跨集合的连接：

---

根据mongolab的支持页面，他们目前只运行mongodb 3.0：您可能需要等待3.2。我如何解决我的问题。有什么办法可以替代吗

'use strict';

module.exports = function(app) {
    var users = require('../../app/controllers/users.server.controller');
    var appliedoffers = require('../../app/controllers/appliedoffers.server.controller');

    // Appliedoffers Routes
    app.route('/appliedoffers')
        .get(appliedoffers.list)
        .post(users.requiresLogin, appliedoffers.create);

    app.route('/appliedoffers/:appliedofferId')
        .get(appliedoffers.read)
        .put(users.requiresLogin, appliedoffers.hasAuthorization, appliedoffers.update)
        .delete(users.requiresLogin, appliedoffers.hasAuthorization, appliedoffers.delete);

    // Finish by binding the Appliedoffer middleware
    app.param('appliedofferId', appliedoffers.appliedofferByID);
};

exports.appliedofferByID = function(req, res, next, id) { 
    Appliedoffer.findById(id).populate('user', 'displayName').exec(function(err, appliedoffer) {
        if (err) return next(err);
        if (! appliedoffer) return next(new Error('Failed to load Appliedoffer ' + id));
        req.appliedoffer = appliedoffer ;
        next();
    });
};