How to do sequential subscription in Meteor(iron:router)

Question

For example, I have to something like this:

Router.route('/threadList', {
waitOn: function () {
    return Meteor.subscribe('threads', Meteor.userId);
},
data: function() {
    threads = Threads.find();
    _.each(threads, function(thread) {
        _.each(thread.comments, function(commentId) {
            Meteor.subscribe('comments', commentId);
       })
   })
}

I dont know how to do this kind of thing in Meteor

Answer 1

you can check out the package publish-composite

to do reactive joins in your publication code.

just add it to your project: meteor add reywood:publish-composite

then do your publish like so:

Meteor.publishComposite('publishName', { 
    find: function() {
        return Threads.find({userId: this.userId});
    },
    children: [
        {
            find: function(thread) {
                 return Comments.find({threadId: thread._id});
            }
        }
});