BlazeACStep2.js

// register this group of functions with the ActionMixins

ZenMixins.registerMixin('CommentActions', {
  fetchData(collection, query, options) {
   // Do something here
  },
  submitComment(options, cb) {
    return Meteor.call('submitComment', options, cb);
  },
  manipulateDOM(template) {
   // manipulate some dom
   $(template.find('.some-selector')).animate({right: -20px});
  }
  changeTemplateState(reactiveVar, update) {
    var currentVal = reactiveVar.get();
    if (!_.isEmpty(currentVal)) {
      reactiveVar.set(update);
    }
  }
});

// WHEN YOU INSTANTIATE THE ACTION SEE BELOW
// The ZenActions takes a string array of mixin names.
// this will bind these methods to the objects prototype and you're good to go.

// Template 1 CommentSubmitComponent
Template.CommentSubmitComponent.onCreated(function () {
  var template = this;
  // now this template has access to all the comment actions, 
  // and is bound to the template.
  template.actionCreator = new ZenAction(['CommentActions']);
});

// Template 2 CommentComponent
Template.CommentComponent.onCreated(function () {
  var template = this;
  // now this template has access to all the comment actions, 
  // and is bound to the template.
  template.actionCreator = new ZenAction(['CommentActions']);
});

// SHARED ACTIONS BETWEEN TEMPLATES