Doctrine Not Save Boolean Value to Database in Symfony

If you create a boolean field in the database and symfony renders it as a checkbox ( sfWidgetFormInputCheckbox ) in the form... AND DOCTRINE DOES NOT SAVE THE VALUE TO THE DATABASE, you have to a put the boolean validator on it and doctrine will save the value. That's the magic.

    $this->setValidators(array(
        ...,
        'enabled' => new sfValidatorBoolean(),
        ...,
    ));

Remove PostValidator in Symfony

Remove post validator that is set in a base form:

$this->validatorSchema->setPostValidator(new sfValidatorPass()); 

Password Confirmation Widget and Validator in Symfony

$this->widgetSchema['password'] = new sfWidgetFormInputPassword(array('label' => 'Password'));
$this->widgetSchema['password_confirm'] = new sfWidgetFormInputPassword(array('label' => 'Password confirm'));
$this->validatorSchema['password'] = new sfValidatorString(array(
  'min_length' => 5
), array(
  'min_length' => 'Password too short (min 5 chars).'));
$this->validatorSchema['password_confirm'] = clone $this->validatorSchema['password'];
$this->mergePostValidator(new 
sfValidatorSchemaCompare('password',
sfValidatorSchemaCompare::EQUAL, 'password_confirm', array(),
array('invalid' => 'Passwords do not match.')));

Note: In this case password fields are not required.

Symfony String Validator

$this->validatorSchema['subject'] = new sfValidatorString(array(
  'required' => true,
  'max_length' => 255
), array(
  'required' => 'Required field.',
  'max_length' => 'Too long, maximum 255 characters.'
));