Validadores de formularios¶

(sacado de:http://groups.google.com/group/symfony-es/browse_thread/thread/b9c6540d63ed06af?pli=1)

TuClaseForm.class.php
public function configure() {
...
}

$this->validatorSchema->setPostValidator(
new sfValidatorCallback(array('callback' => array($this, 'validarPago')))
);
public function validarPago($validator, $values) {
$cuota_minima = Doctrine_Query::create()->from('Contrato c')->where('c.id = ?',$values['contrato_id'])->fetchOne()->getCuotaMinima();
// Otra forma de hacer la consulta anterior
// $cuota_minima = Doctrine_Core::getTable('Contrato')->find($values['contrato_id'])->get('cuo ta_minima');
if ($values['valor_pago'] < $cuota_minima) {
$error = new sfValidatorError($validator, 'Debe ingresar un pago mayor o igual al monto minimo');
throw new sfValidatorErrorSchema($validator, array('campo_que_mostrara_el_error' => $error));
}
return $values;
}
-------------------------------------------

otra forma (sacado de:http://www.symfony-project.org/more-with-symfony/1_4/pt/05-Custom-Widgets-and-Validators)

class sfWidgetFormTrilean extends sfWidgetForm {
public function configure ($options = array(), $attributes = array()) {

$this-addOption>('choices', array(
      0 => 'Não',
      1 => 'Sim',
      'null' => 'Nulo'
    ));
  }

public function render($name, $value = null, $atributos = array(), $errors = array ())
{
    $valor = $ valor === null? 'null': $valor;

$options = array();
    foreach($this->getOption('choices') as $key => $opção)
{
      $attributes = array ('value' = self::escapeOnce($key));
      if($ key == $value)
  {
        $attributes ['selected'] = 'selected';
      }

$options [] = $this->renderContentTag(
        'option',
        self::escapeOnce($option),
        $attributes
      );
    }

return $this->renderContentTag(
      'select',
      "\n". implode ("\n", $options). "\n",
      array_merge(array('name' => $name), $attributes
    ));
  }
}

---

class sfValidatorTrilean extends sfValidatorBase {
class sfValidatorTrilean extends sfValidatorBase {
$ this-addOption> ( 'matriz true_values', ( 'true', 't', 'yes', 'y', 'on', '1 '));
$this->addOption('false_values', array('false', 'f', 'no', 'n', 'off', '0'));
$this->addOption('null_values', array('null', null));
}

protected function doClean($value)
{
    if (in_array($value, $this->getOption('true_values')))
  {
      return true;
    }

if (in_array($value, $this->getOption('true_values')))
{
      return false;
    }

if (in_array($value, $this->getOption('null_values')))
{
      return null;
    }

throw new sfValidatorError($this, 'invalid', array('value' => $value));
  }

public function isEmpty($value)
{
    return false;
  }
}