DDP Meteor publish to specific client

help
1

Is it possible to make that Meteor.publish method (in server app) notifiy user with specific connection? For example I’m tracking connected users

  Meteor.onConnection(function(connection) {
        console.log(connection.id + ", " + connection.clientAddress);
  });

and here’s how publish method works

 Meteor.publish('test1', function(data){
        return Users.find();
 });

So I just want to notify user with connection.id = ywB9jPmCwguxjasDk if User collection changes. Is it possible to do that? Currently all users are notified if collection changes. Thank you :slight_smile:

2
3

Take a look at EventDDP. It’s a pretty old package, but it works just fine even with latest Meteor. It lets you to send event messages to clients and filter them by user ID.

4

This is very easy (maybe I am missing something)

See docs on this.connection and this.ready() for publish functions.

I am assuming this:

  • All users will get the results of the first call to subscribe('test1…)`
  • Everyone else gets nothing
// Declare UserAccessConnection as global variable
// (or could be local variable if in the same file)
UserAccessConnection = null;
Meteor.onConnection(function(connection) {
  console.log(connection.id + ", " + connection.clientAddress);
  // some logic...
  UserAccessConnection  = connection.id;
});

 Meteor.publish('test1', function(data){
  let retVal = [];
  if(UserAccessConnection === this.connection.id) {
    retVal = Users.find();
  } else {
    this.ready();
  }

  return retVal;
 });

Maybe I am missing some details that make this more complex? Or maybe @henribeck’s advice to read the docs is good too. :neutral_face: