Meteor.http方法在服务器上是未定义的？

Question

So, I'm trying to write a method that makes an http call. When I run the method, I get the following error:

Exception while invoking method 'upload' TypeError: Cannot call method 'call' of undefined

Here is what the code looks like:

Client:

console.log(Meteor.call('upload', f, content));

Server:

Meteor.methods({
  upload: function(file, content) {
    this.unblock();
    Meteor.http.call("PUT", "http://blah");
  }
});

UPDATE: Problem solved, turns out I had to enable the package: meteor add http

Answer 1

You simply need to add the HTTP package by running this on command line in your project :

meteor add http

Answer 2

Also you need a call back using Meteor.call client side.

From the documentation:

On the client, if you do not pass a callback and you are not inside a stub, call will return undefined, and you will have no way to get the return value of the method. That is because the client doesn't have fibers, so there is not actually any way it can block on the remote execution of a method.

So you should change this

console.log(Meteor.call('upload', f, content));

to this

Meteor.call('upload', f, content, function(error, result){console.log(result);});