Struggling with reactivity

help
1

I’m struggling with reactivity :frowning:

I have a class that exists on both the server and the client. In it’s constructor I want to pull in a document from a collection and set it to this._config.

export class AAM_Access {

  constructor() {
    this._id = "access";
    this._source = Configuration.find({_id : this._id});
    this._config = Configuration.findOne({_id : this._id});

    self = this;
    Tracker.autorun(function(){
      self._config = self._source.fetch()[0];
    });
   } 
}

With this I’m getting an error on the server:

Error: Can't call yield in a noYieldsAllowed block!

I’m guessing this has something to do with calling .fetch() inside the Tracker.autorun. I would like this._config to be reactive, but I’m a little lost on how to go about it.

Any help would be fantastic :slight_smile:

EDIT: I do have 2 classes that extend this class, one for server one for client, just like Accounts_Server, Accounts_Client extend Accounts_Common. Might it be better to pull in the document in their constructors instead of in the common parent class?

2

You can’t use Tracker on the server out of the box. If you need an autorun, you can check out this package, which I’ve used successfully before: https://github.com/peerlibrary/meteor-server-autorun

3

Ah ok, thanks. I should’ve #rtfm a bit more closely.