Symfony\Component\Form\FormFactory::createBuilder PHP Метод

    public function createBuilder($type = 'form', $data = null, array $options = array(), FormBuilderInterface $parent = null)
    {
        $name = $type instanceof FormTypeInterface || $type instanceof ResolvedFormTypeInterface
            ? $type->getName()
            : $type;

        return $this->createNamedBuilder($name, $type, $data, $options, $parent);
    }

 /**
  * Obtains any form metadata from the entity and adds itself to the form
  * @param $entity
  * @param $form
  * @return
  */
 public function createFormBuilder($entity, $data = null, array $options = array())
 {
     // Build the $form
     $formBuilder = $this->factory->createBuilder('form', $data, $options);
     // Read the entity meta data and add to the form
     if (empty($this->drivers)) {
         return $formBuilder;
     }
     // Look to the readers to find metadata
     foreach ($this->drivers as $driver) {
         $metadata = $driver->getMetadata($entity);
         if (!empty($metadata)) {
             break;
         }
     }
     if (empty($metadata)) {
         return $formBuilder;
     }
     // Configure the form
     $fields = $metadata->getFields();
     foreach ($fields as $field) {
         // TODO: Detect "new x()" in field value or type option for AbstractType creation
         // TODO: Detect references to "%service.id%" for service constructor dependency
         $formBuilder->add($field->name, $field->value, $field->options);
     }
     return $formBuilder;
 }