gistfile1.php

<?php

class AttachementNameAndAttachmentFileValidatorSchema extends sfValidatorSchema
{
  protected function configure($options = array(), $messages = array())
  {
    $this->addMessage('attachment_name', 'Il nome dell\'allegato è obbligatorio.');
    $this->addMessage('attachment_file', 'Caricare un file.');
  }
  
  protected function doClean($values)
  {
 
    $errorSchema = new sfValidatorErrorSchema($this);

    // attachment_file is filled but no attachment_name
      if ($values['attachment_file'] && !$values['attachment_name'])
      {
        $errorSchema->addError(new sfValidatorError($this, 'required'), 'attachment_name');
      }
 
      // attachment_name is filled but no attachment_file
      if (!$values['attachment_file'] && $values['attachment_name'])
      {
        $errorSchema->addError(new sfValidatorError($this, 'required'), 'attachment_file');
      }
 
      // no attachment_file and no attachment_name, remove the empty values
      if (!$values['attachment_file'] && !$values['attachment_name'])
      {
        unset($values['attachment_file']);
        unset($values['attachment_name']);
      }
 
 
    // throws the error for the main form
    if (count($errorSchema))
    {
      throw new sfValidatorErrorSchema($this, $errorSchema);
    }
 
    return $values;
  }
    
}