结合使用Meteor和Angular2/Typescript，如何基于客户端事件从服务器端代码调用外部Web服务? [英] Using Meteor with Angular2/Typescript, how do I call an external web service from server-side code based on a client-side event?
问题描述
当用户在客户端中添加新条目时，我需要从服务器进行Web服务调用(客户端代码将无权访问)，并将一些其他信息添加到MongoDB中存储的数据中.尝试使用标准的Meteor.methods/Meteor.call模式似乎无效.
When the user adds a new entry in the client, I need to make a web service call from the server (the client-side code will not have access) and add some additional information to the data stored in MongoDB. Trying to use the standard Meteor.methods/Meteor.call pattern does not seem to work.
我是否需要监听服务器和客户端上添加"按钮上的click事件?我应该在服务器响应的客户端上引发自定义事件吗?是否有适当的方法可以直接调用服务器端方法?最重要的是，如何使TypeScript在所有这些方面感到高兴?
Do I need to listen for the click event on the "Add" button on both the server and the client? Should I raise a custom event on the client that the server reacts to? Is there a proper way to make a direct call to a server-side method? Most importantly, how do I keep TypeScript happy in all of this?
我是Meteor上TypeScript层的新手，它使我陷入循环.我通常遵循2.0的Angular-Meteor教程，但是这种情况尚未涵盖.
I am new to the TypeScript layer on top of Meteor and it is throwing me for loop. I have been generally following the Angular-Meteor tutorial for 2.0 but this sort of thing is not covered yet.
推荐答案
使用angular2，Meteor和Typescript，有效的方法是链接Meteor.methods.
Using angular2, Meteor and Typescript, what works is to chain the Meteor.methods.
首先在客户端上，响应按钮单击...
Meteor.call('importCsv'，id，function(error，result){...
First on the client, in response to a button click
...
Meteor.call('importCsv',id,function(error,result) {
...
在collections/methods文件夹或类似文件夹中，我将方法定义如下:
In collections/methods folder or similar, I define the method as follows:
Meteor.methods({
'importCsv': function(id) {
console.log('importCsv method on client');
Meteor.call('importCsvServer',id);
}
});
在服务器/文件夹中，文件包含以下方法
In server/ folder, a file includes the method as follows
Meteor.methods({
'importCsvServer': function(id) {
....
在server/main.ts中，我导入集合/方法/文件名.在client/app.ts中，我导入相同的内容.客户端Meteor.call成功调用第一个方法，然后在服务器/文件夹中调用第二个方法.
In server/main.ts I import the collections/methods/filename. In client/app.ts I import the same thing. The client Meteor.call successfully calls the first method which then calls the second one in the server/ folder.
我的目标是在客户端发起的服务器上进行大量处理.当我在导入到客户端和服务器的集合/方法中定义的方法中进行函数调用时，会导致编译器错误.
My goal is to have a bunch of processing on the server initiated by the client. When I had the function calls in the method defined in collections/methods imported into both the client and server, it resulted in compiler errors.
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