Same code on Client and Server confusion.

gistfile1.txt

if (Meteor.isClient()) {
Template.product_carousel.onRendered(function () {
    self.autorun(function() {
        self.subscribe('relatedProducts');
    });
});

Template.product_carousel.helpers({
    similarProducts: function () {
        var product = Session.get("expandedProduct");
        var products, fillProducts;
        var category, id, type;

        if (product) {
            type = product.type;
            category = product.category;
            id = product._id;
        }

        products = Products.find({
            _id: { $ne: id },
            type: type
        },
        {
            sort: {createdOn: -1},
            limit: 15
        }).fetch();

        if (products.length < 15) {
            var limit = 15 - products.length;
            fillProducts = Products.find({
                _id: { $nin: _.pluck(products, "_id"),
                       $ne: id },
                category: category,
            },
            {
                sort: {createdOn: -1},
                limit: limit
            }).fetch();
        }

        steps = 0; /* resetting autoscroll */

        return products.concat(fillProducts);
    }
});

}

if (Meteor.isServer()) { 

  Meteor.publish('relatedProducts', function() {
      check(username, String);
      check(limit, Number);
  
      var product = Session.get("expandedProduct");
      var products, fillProducts;
      var category, id, type;
  
      if (product) {
          type = product.type;
          category = product.category;
          id = product._id;
      }
  
      products = Products.find({
          _id: { $ne: id },
          type: type
      },
      {
          sort: {createdOn: -1},
          limit: 15
      }).fetch();
  
      if (products.length < 15) {
          var limit = 15 - products.length;
          fillProducts = Products.find({
              _id: { $nin: _.pluck(products, "_id"),
                     $ne: id },
              category: category,
          },
          {
              sort: {createdOn: -1},
              limit: limit
          }).fetch();
      }
  
      steps = 0; /* resetting autoscroll */
  
      return products.concat(fillProducts);
  
  });

}