title: How to access a calculated field of a backbone model from handlebars template?
body: <p>I would like to access the calculated fields I have implemented in the model (backbone.js) from the template.
  Do I need always to define a helper to do it?</p>
  
  <p>I think the problem has to do with the way I pass the model to the template.
  If I pass this.model.toJSON() I have access to the properties but not to the functions I have defined in it.
  If I pass this.model directly I can access the function but not the properties of the backbone model.</p>