Question

我是loopback和node.js的新手。

我创建了两个模型：Rating和RatingsAggregate 使用loopback资源管理器，我可以查询和发布API就好了。

我尝试设置一些基本的业务逻辑，所以我在共同/模型中编辑Rating.js文件以下是它的内容：

module.exports = function(Rating) {


Rating.afterRemote('**', function(ctx, inst, next) {


    var loopback = require('loopback');
    var app = loopback();
    var ratingsaggregate = app.models.ratingsaggregate;

    ratingsaggregate.post({"source":"foobar","restaurantID":"foobar","itemMenuName":"foobar","itemSectionName":"foobar","itemName":"foobar","nRatings1":123,"nRatings2":123,"nRatings3":123,"nRatings4":123,"nRatings5":123,"hasImage":true,"imageSize":123,"latestImageRatingID":"foobar","imageCount":123,"lastUpdated":"foobar"}, function(err, response) {
        if (err) console.error(err);
        next();
    });

  });

};

我可以加载我的API，但每当我对它运行一个get语句时，我都会收到此错误：

TypeError: Cannot call method 'post' of undefined

我的猜测是，以某种方式收视率从未获得价值......但我不知道我做错了什么。显然这不是我的业务逻辑的最终状态，但我正在尝试两个模型之间的一些基本CRUD

Answer 1

而且......这就是答案。文档中隐藏了一个getModel函数

module.exports = function(Rating) {


Rating.afterRemote('create', function(ctx, inst, next) {


    var loopback = require('loopback');
    var ratingsaggregate = loopback.getModel('ratingsaggregate');

    ratingsaggregate.create({"source":"foobar","restaurantID":"foobar","itemMenuName":"foobar","itemSectionName":"foobar","itemName":"foobar","nRatings1":123,"nRatings2":123,"nRatings3":123,"nRatings4":123,"nRatings5":123,"hasImage":true,"imageSize":123,"latestImageRatingID":"foobar","imageCount":123,"lastUpdated":"foobar"}, function(err, response) {
        if (err) console.error(err);
        next();
    });

  });

};

修复所有内容，行为是预期的行为

LoopBack：无法调用方法＆＃39; post＆＃39;未定义的

1 个答案: