Question
How to load specific library for RTL language in Drupal 8?
Solution
/**
* @param $variables
* Load specific library for pages with html attribute of RTL
*/
function mymodule_preprocess_html(&$variables)
{
if ($variables['html_attributes']['dir'] == 'rtl') {
/**
* for arabic language for example
*/
$variables['#attached']['library'][] = 'mymodule/rtl-css';
$variables['#attached']['library'][] = 'mymodule/rtl-js';
} else {
/**
* for english or french language
*/
$variables['#attached']['library'][] = 'mymodule/ltr-css';
$variables['#attached']['library'][] = 'mymodule/ltr-js';
}
}
