Backbone base view with Handlebars template rendering

base.js

App.Views.Base = Backbone.View.extend({
  templateName: null,

  render: function(){
    var data;
    
    if(this.templateName !== null){         
      
      if(this.model !== null){
        data = this.model.toJSON()
      }else{
        data = {}
      }       
    
      this.$el.html(Handlebars.templates[this.templateName](data))
    }
    
    return this.$el;
  }  
});