How to attach css to bean preprocess?

Question

So we define the function with this hook...

/**
 * Implements hook_preprocess_bean().
 */
function MODULE_preprocess_bean(&$variables) {

  // Attach css...

  return $variables;
}

What can this be attached to please?

$variables['SOMETHING']['#attached']['css'][] = drupal_get_path('module', 'MODULE') . '/MODULE.css';

Answer 1

It can be attached to whatever you like - the important thing is that you render it.

So you could quite simply use:

$foo['#attached']['css'][] = drupal_get_path('module', 'MODULE') . '/MODULE.css';
drupal_render($foo);

Or stick it in a var like you're already doing:

$variables['SOMETHING']['#attached']['css'][] = drupal_get_path('module', 'MODULE') . '/MODULE.css';

And in the template:

drupal_render($SOMETHING);

It works because drupal_render() unconditionally calls drupal_process_attached() on any element it finds with an #attached property, regardless of what you're doing with the result of the render (or if there's even anything to render).

Answer 2

You can attach CSS files using the dedicated function drupal_add_css :

 drupal_add_css(drupal_get_path('module', 'MODULE') . '/MODULE.css');

By the way, you don't have to return your $variables since it's passed by reference.

I hope that help :)