[Drupal] Make the Search API Page search block appear in Bootstrap markup

When using Search API Page, I needed to theme the search form in the bootstrap structure. The cleanest answer I have found is to add some variables to trigger the bootstrap overrides on the search form. /** * Implements hook_form_FORM_ID_alter(). */ function MYMODULE_form_search_api_page_block_form_alter(&$form, FormStateInterface $form_state, $form_id) { // We need this to make our search_api_page_block_form …