boiler/attachments/sammy/plugins/sammy.form.js
function(keypath, attributes) {
      attributes = $.extend({type: 'hidden'}, this._attributesForKeyPath(keypath), attributes);
      return simple_element('input', attributes);
    }
function(keypath, attributes) {
      attributes = $.extend({type: 'hidden'}, this._attributesForKeyPath(keypath), attributes);
      return simple_element('input', attributes);
    }
function ( keypath , attributes ) { attributes = $ . extend ( { type : 'hidden' } , this . _attributesForKeyPath ( keypath ) , attributes ) ; return simple_element ( 'input' , attributes ) ; }
creates a hidden input for `keypath` with an optional `attributes` object
creates a hidden input for keypath with an optional attributes object