How to add class to a tag (Drupal 7)?

Question

Drupal

There is a menu displayed by a block, you need to assign the tags (a) a bootstrap class (btn) what function can this be predefined? Thank you.

Answer 1

Try the Menu attributes
module . With it, you can specify a class for any menu item.
Or you need to override theme_menu_link() in your theme.

Answer 2

Now there is a function on the site

function mythemes_menu_link(array $variables) {
  $element = $variables['element'];
  $sub_menu = '';
  
  if (isset($element['#original_link']['mlid'])) {
    $element['#attributes']['class'][] = 'mlid'.$element['#original_link']['mlid'];
  }

  if ($element['#below']) {
    $sub_menu = drupal_render($element['#below']);
  }
  $output = l($element['#title'], $element['#href'], $element['#localized_options']);
  return '<li' . drupal_attributes($element['#attributes']) . '>' . $output . $sub_menu . "</li>\n";
}

It adds a class for all li in the menu, maybe add something to this function so that the class is assigned to the tag as well ?