AddProductForm::__construct PHP Метод

    public function __construct($controller, $name = "AddProductForm")
    {
        parent::__construct($controller, $name, $this->getFormFields(), $this->getFormActions(), $this->getFormValidator());
        $this->addExtraClass("addproductform");
        $this->extend('updateAddProductForm');
    }

 public function __construct($controller, $name = "VariationForm")
 {
     parent::__construct($controller, $name);
     $product = $controller->data();
     $farray = array();
     $requiredfields = array();
     $attributes = $product->VariationAttributeTypes();
     foreach ($attributes as $attribute) {
         $farray[] = $attribute->getDropDownField("Choose {$attribute->Label} ...", $product->possibleValuesForAttributeType($attribute));
         $requiredfields[] = "ProductAttributes[{$attribute->ID}]";
     }
     $fields = new FieldList($farray);
     if (self::$include_json) {
         $vararray = array();
         if ($vars = $product->Variations()) {
             foreach ($vars as $var) {
                 $vararray[$var->ID] = $var->AttributeValues()->map('ID', 'ID');
             }
         }
         $fields->push(new HiddenField('VariationOptions', 'VariationOptions', json_encode($vararray)));
     }
     $fields->merge($this->Fields());
     $this->setFields($fields);
     $requiredfields[] = 'Quantity';
     $this->setValidator(new VariationFormValidator($requiredfields));
     $this->extend('updateVariationForm');
 }