Rechercher un médium

// Add Shortcode
function search_medium() {

	// Code
function wn_custom_tax_dropdown( $taxonomy, $id, $option, $exclude ='' ) {
  $terms = get_terms( $taxonomy, array('exclude' => $exclude ) );
  if ( $terms ) {
    printf( '<select name="%s" class="postform" id="%s">', esc_attr( $taxonomy ), esc_attr( $id ) );
    printf( '<option value"">%s</option>', esc_attr( $option )  );
    foreach ( $terms as $term ) {
      if ( $term->count < 1) continue;
      printf( '<option value="%s">%s (%s)</option>', esc_attr( $term->slug ), esc_html( $term->name )  );
    }
    print( '</select>' );
  }
} // wn_custom_tax_dropdown()

add_action('template_redirect','wn_search_medium' );
function wn_search_medium() {
  function wn_nav_search_medium() { ?>

    <nav class="nav-search" role="navigation" itemscope="itemscope" itemtype="http://schema.org/SiteNavigationElement">
      <div class="wrap center">
          <br>
          <h4>Sélectionnez votre médium : </h4>
        <ul class="menu">
          <li class="menu-item">
            <?php wn_custom_tax_dropdown( 'mediums', 'mediums', 'Sélectionnez un médium', '' ); ?>
            <script type="text/javascript">
              var menuMedium = document.getElementById("mediums");
              function onCatChange() {
                if ( menuMedium.options[menuMedium.selectedIndex].value != -1 ) {
                  location.href = "<?php echo home_url();?>/mediums/"+menuMedium.options[menuMedium.selectedIndex].value+"/";
                }
              }
              menuMedium.onchange = onCatChange;
            </script>
          </li>
        </ul>
          <br>
      </div>
    </nav>

  <?php } // function wn_nav_search_medium()
}  // function gn_affichage_contenu_archive()

}
add_shortcode( 'wn_search_medium', 'search_medium' );