Vulcan/client/views/users/profile/user_posts.js

Template[getTemplate('userPosts')].created = function () {
  Session.set('postsShown', 5);
  var user = this.data;
  Tracker.autorun(function () {
    coreSubscriptions.subscribe('userPosts', user._id, Session.get('postsShown'));
  });
};

Template[getTemplate('userPosts')].helpers({
  posts: function () {
    return Posts.find({userId: this._id}, {limit: Session.get('postsShown')});
  },
  hasMorePosts: function () {
    console.log(this)
    return Posts.find({userId: this._id}).count() >= Session.get('postsShown');
  }
});

Template[getTemplate('userPosts')].events({
  'click .posts-more': function (e) {
    e.preventDefault();
    var postsShown = Session.get('postsShown');
    Session.set('postsShown', postsShown + 10);
  }
});