i18n (internationalization) in symfony

I am using the __('text') construct in symfo开发者_StackOverflow社区ny so I can then internationalise. However I have tried to use it in a setFlash message as follows

$this->getUser()->setFlash('error', __('message'));

in the actions/actions.class.php but it give me an error

Fatal error: Call to undefined function __()

So am I to assume that I cannot use the __() at the action level but only the template level?

In an action you have to use __() using the context:

echo $this->getContext()->getI18N()->__('message');

You can also use:

sfProjectConfiguration::getActive()->loadHelpers(array('I18N'));
$this->getUser()->setFlash('error', __('message'));

Best option if you are to do this is add this method to your actions.class.php:

public function preExecute()
  {
   sfProjectConfiguration::getActive()->loadHelpers(array('I18N'));
   parent::preExecute();
  }

It worked great for me! Thank you

You can also do $this->loadHelpers(array('I18N')); in your ProjectConfiguration class or frontend|backendConfiguration classes

Regards