gistfile1.js

// 1
renderMethod: function() {
  var self = this;
  if(this.render_method) return this.render_method;
  _(this.get('files').each(function(file) {
    if(file.active) {
      self.render_method = file.form_render || 'Mapped';
    }   
  }); 
  return this.render_method;
};


// 2
renderMethod: function() {
  var self = this;
  if(!this.render_method) {
    _(this.get('files').each(function(file) {
      if(file.active) {
        self.render_method = file.form_render || 'Mapped';
      }   
    });
  }
  return this.render_method;
};