在Promise Callback中调用Meteor方法[暂停没有错误] [英] Calling a Meteor Method inside a Promise Callback [Halting w/o Error]

问题描述

我正在尝试使用这个NPM软件包：在我的Meteor应用程序中 Gumroad-API 。当我尝试在Promise回调中进行Meteor方法调用（或集合插入）时，我在服务器端遇到问题。

I'm trying to use this NPM package: Gumroad-API inside my Meteor app. I'm encountering issues on the server side when I try to do a Meteor method call (or a collection insert) inside of the Promise callback.

以下是代码对于我的两个流星方法：

The following is the code for my two Meteor methods:

Meteor.methods({

  testMethod: () => {
    console.log('TEST METHOD RUN');
  },

  fetchGumroadData: () => {
    const Gumroad = Meteor.npmRequire('gumroad-api');
    let gumroad = new Gumroad({ token: Meteor.settings.gumroadAccessKey });

    Meteor.call('testMethod');        // runs fine

    gumroad.listSales('2014-12-04', '2099-12-04', 1).then((result) => {
      console.log('1');               // runs fine
      Meteor.call('testMethod');      // execution halts here w/o error msg
      console.log('2');               // this never runs
    });
  },
});

.then（）内的代码每当我尝试在其中执行 Meteor.call（）时，回调总是停止（没有错误消息）。

The code inside the .then() callback always halts (without error msgs) whenever I try to do a Meteor.call() inside of it.

当我用 Collection.insert（）替换 Meteor.call（）时，我得到相同的行为，例如： Sales.insert（{text：'test'}）; 。

I get the same behaviour when I replace the Meteor.call() with a Collection.insert() such as: Sales.insert({text:'test'});.

推荐答案

老问题但是，失败的原因是因为Meteor环境在你的回调中不可用。

Old question but, the reason this fails is because the Meteor environment is not available in your callback.

警告这是未经测试的代码

Meteor.methods({

  testMethod: () => {
    console.log('TEST METHOD RUN');
  },

  fetchGumroadData: () => {
    const Gumroad = Meteor.npmRequire('gumroad-api');
    let gumroad = new Gumroad({ token: Meteor.settings.gumroadAccessKey });

    Meteor.call('testMethod');        // runs fine

    gumroad.listSales('2014-12-04', '2099-12-04', 1)
      .then(Meteor.bindEnvironment((result) => {
        console.log('1');               // runs fine
        Meteor.call('testMethod');      // execution halts here w/o error msg
        console.log('2');               // this never runs
      }));
    },
});

关于bindEnvironment和wrapAsync的教程可以在这里找到： https://www.eventedmind.com/items/meteor-what-is-meteor-bindenvironment

Tutorials on bindEnvironment and wrapAsync can be found here: https://www.eventedmind.com/items/meteor-what-is-meteor-bindenvironment

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