This its a password strength validator, with ajax request for checking the password field.

First create a validator in lib/validators/sfPasswordStrengthValidator.class.php

<?php
class sfPasswordStrengthValidator extends sfValidator
{
    public function execute (&$value, &$error)
    {
        $weakness = $this->Password_Strength($value);
 
        if($weakness==1) {
            $error = $this->getParameter('strength_error');
            return false;
        }
 
        return $weakness;
    }
 
    public function initialize ($context, $parameters = null)
    {
        // Initialize parent
        parent::initialize($context);
 
        // Set default parameters value
        $this->setParameter('strength_error', 'Weak password');
 
        // Set parameters
        $this->getParameterHolder()->add($parameters);
 
        return true;
    }
        // Thanks for: Alix Axel Weblog
    // URL: http://www.alixaxel.com/wordpress/wp-content/2007/06/Password_Strength.phps
    function Password_Strength($password, $username = null)
    {
        if (!empty($username))
        {
            $password = str_replace($username, '', $password);
        }
 
        $strength = 0;
        $password_length = strlen($password);
 
        if ($password_length < 5)
        {
            return $strength;
        }
 
        else
        {
            $strength = $password_length * 4;
        }
 
        for ($i = 2; $i <= 4; $i++)
        {
            $temp = str_split($password, $i);
 
            $strength -= (ceil($password_length / $i) - count(array_unique($temp)));
        }
 
        preg_match_all('/[0-9]/', $password, $numbers);
 
        if (!empty($numbers))
        {
            $numbers = count($numbers[0]);
 
            if ($numbers >= 3)
            {
                $strength += 5;
            }
        }
 
        else
        {
            $numbers = 0;
        }
 
        preg_match_all('/[|!@#$%&*\/=?,;.:\-_+~^¨\\\]/', $password, $symbols);
 
        if (!empty($symbols))
        {
            $symbols = count($symbols[0]);
 
            if ($symbols >= 2)
            {
                $strength += 5;
            }
        }
 
        else
        {
            $symbols = 0;
        }
 
        preg_match_all('/[a-z]/', $password, $lowercase_characters);
        preg_match_all('/[A-Z]/', $password, $uppercase_characters);
 
        if (!empty($lowercase_characters))
        {
            $lowercase_characters = count($lowercase_characters[0]);
        }
 
        else
        {
            $lowercase_characters = 0;
        }
 
        if (!empty($uppercase_characters))
        {
            $uppercase_characters = count($uppercase_characters[0]);
        }
 
        else
        {
            $uppercase_characters = 0;
        }
 
        if (($lowercase_characters > 0) && ($uppercase_characters > 0))
        {
            $strength += 10;
        }
 
        $characters = $lowercase_characters + $uppercase_characters;
 
        if (($numbers > 0) && ($symbols > 0))
        {
            $strength += 15;
        }
 
        if (($numbers > 0) && ($characters > 0))
        {
            $strength += 15;
        }
 
        if (($symbols > 0) && ($characters > 0))
        {
            $strength += 15;
        }
 
        if (($numbers == 0) && ($symbols == 0))
        {
            $strength -= 10;
        }
 
        if (($symbols == 0) && ($characters == 0))
        {
            $strength -= 10;
        }
 
        if ($strength < 0)
        {
            $strength = 0;
        }
 
        if ($strength > 100)
        {
            $strength = 100;
        }
 
        return $strength;
    }
}
 

Then in your view template use:

<?php echo observe_field('password', array(
                          'update'   => 'passwordStatus',
                          'url'      => 'sfGuardAuth/checkPasswordStrength',
                          'with' => "'id='+encodeURIComponent($('password').value)",
                          'loading'=>"Element.show('indicator_passwordstatus')",
                          'complete'=>"Element.hide('indicator_passwordstatus');Element.show('passwordStatus');",
                      )) ?>
 

That code will monitor changes at password input field, and submit the updated value to the defined route.

Then add the following to your actions file:

public function executeCheckPasswordStrength() {
        $password = $this->getRequestParameter('id');
        $strengthValidator = new sfPasswordStrengthValidator();
        $strengthValidator->initialize($this->getContext());
        $error='none';
        $score = $strengthValidator->execute($password,$error);
        if(!$score)
        return $this->renderText('too short');
        if($score < 20) {
            return $this->renderText('not weak');
        } else if($score < 50) {
            return $this->renderText('relevant');
        } else {
            return $this->renderText('strong');
        }
 
        return true;
    }
 

Cheers

Currently i had to do different validations of data depending the data entered by the user.

The solution i found, using the symfony built-in yml validation was:

action:

$validated = true;
$validationConfig = $this->getModuleName().'/'.sfConfig::get('sf_app_module_validate_dir_name').'/'.$validationFile.'.yml';
 
if (null !== $validateFile = sfConfigCache::getInstance()->checkConfig(sfConfig::get('sf_app_module_dir_name').'/'.$validationConfig, true))
{
    $context = $this->getContext();
    $validatorManager = new  sfValidatorManager();
        $validatorManager->initialize($context);
    require($validateFile);
    $validated = $validatorManager->execute();
}
 

refactoring:

public function validateParamsYml($validationFile) {
        $validated = true;
        $validationConfig = $this->getModuleName().'/'.sfConfig::get('sf_app_module_validate_dir_name').'/'.$validationFile.'.yml';
 
        if (null !== $validateFile = sfConfigCache::getInstance()->checkConfig(sfConfig::get('sf_app_module_dir_name').'/'.$validationConfig, true))
        {
            $context = $this->getContext();
            $validatorManager = new sfValidatorManager();
            $validatorManager->initialize($context);
            require($validateFile);
            $validated = $validatorManager->execute();
        }
        return $validated;
    }
 

Then you can call any validations rules at your action:

public function executeXXX() {
  [...]
  [...]
  $this->validateParamsYml('yml_1');
  $this->validateParamsYml('yml_2');
  [...]
}
 

and finally check if everything was validated then forward/save the data:

if($this->getRequest()->hasErrors()) {
            return $this->handleErrorXXXX();
        }
 

Cheers

A CNPJ and CPF validator for brazilian users...

Just add this in the module/lib/myCpfValidator.class.php path...

//Symfony integration as sfValidator of CPF and //CNPJ
//Date - Jul 11, 2006
//Author - Lucas Peres (mysyfy@gmail.com)
 
//CNPJ and CPF Validator
//Author: Marcelo Bom Jardim
 
//ABOUT
//This PHP script will validate CNPJ and CPF //number by checking there length
//and some other validations.
 
 
class myCpfValidator extends sfValidator {
 
    private function validaCPF($cpf) {
        $soma = 0;
 
        if (strlen($cpf) <> 11)
        return false;
 
        // Verifica 1º digito
        for ($i = 0; $i < 9; $i++) {
            $soma += (($i+1) * $cpf[$i]);
        }
 
        $d1 = ($soma % 11);
 
        if ($d1 == 10) {
            $d1 = 0;
        }
 
        $soma = 0;
 
        // Verifica 2º digito
        for ($i = 9, $j = 0; $i > 0; $i--, $j++) {
            $soma += ($i * $cpf[$j]);
        }
 
        $d2 = ($soma % 11);
 
        if ($d2 == 10) {
            $d2 = 0;
        }
 
        if ($d1 == $cpf[9] && $d2 == $cpf[10]) {
            return true;
        }
        else {
            return false;
        }
    }
 
    private function validaCNPJ($cnpj) {
 
        if (strlen($cnpj) <> 14)
        return false;
 
        $soma = 0;
 
        $soma += ($cnpj[0] * 5);
        $soma += ($cnpj[1] * 4);
        $soma += ($cnpj[2] * 3);
        $soma += ($cnpj[3] * 2);
        $soma += ($cnpj[4] * 9);
        $soma += ($cnpj[5] * 8);
        $soma += ($cnpj[6] * 7);
        $soma += ($cnpj[7] * 6);
        $soma += ($cnpj[8] * 5);
        $soma += ($cnpj[9] * 4);
        $soma += ($cnpj[10] * 3);
        $soma += ($cnpj[11] * 2);
 
        $d1 = $soma % 11;
        $d1 = $d1 < 2 ? 0 : 11 - $d1;
 
        $soma = 0;
        $soma += ($cnpj[0] * 6);
        $soma += ($cnpj[1] * 5);
        $soma += ($cnpj[2] * 4);
        $soma += ($cnpj[3] * 3);
        $soma += ($cnpj[4] * 2);
        $soma += ($cnpj[5] * 9);
        $soma += ($cnpj[6] * 8);
        $soma += ($cnpj[7] * 7);
        $soma += ($cnpj[8] * 6);
        $soma += ($cnpj[9] * 5);
        $soma += ($cnpj[10] * 4);
        $soma += ($cnpj[11] * 3);
        $soma += ($cnpj[12] * 2);
 
 
        $d2 = $soma % 11;
        $d2 = $d2 < 2 ? 0 : 11 - $d2;
 
        if ($cnpj[12] == $d1 && $cnpj[13] == $d2) {
            return true;
        } else {
            return false;
        }
    }
 
 
 
    public function execute (&$value, &$error)
    {
        if($this->getParameter('tipo') == 'cpf') {
            if(!$this->validaCPF($value)) {
                $error = $this->getParameter('msg_error');
                return false;
            }
        } else if($this->getParameter('tipo') == 'cnpj') {
            if(!$this->validaCNPJ($value)) {
                $error = $this->getParameter('msg_error');
                return false;
            }
        } else {
            $error = $this->getParameter('msg_error');
            return false;
        }       
        return true;
    }
 
    public function initialize ($context, $parameters = null)
    {
 
        // initialize parent
        parent::initialize($context, $parameters);
 
        // set defaults
        $this->setParameter('msg_error', 'Invalid input');
 
        $this->getParameterHolder()->add($parameters);
 
        return true;
 
 
    }
}

Then at the module/validate.yml add:

names:
  [...]
  cpf:
    required:      Yes
    required_msg:  O campo CPF é requerido
    validators:    cpfValidator
 
cpfValidator:
  class:          myCpfValidator    
  param:
    tipo:         cpf
    msg_error:    CPF inválido