Views hierarchical taxonomy select box

Question

I'm trying to create a Drupal web for a travel agency and need your help.

• I store locations in a taxonomy with hierarchy, the structure looks like this:

  • Europe
    • France
      • Paris
    • Germany
      • Berlin

• I'm using a view with "Has taxonomy terms (with depth)" filter, exposed as a selectbox.

• "Show hierarchy in dropdown" is enabled

It works fine, but the selectbox starts to get pretty huge as the number of the location is increasing.

So my question is: Is it possible to show just the 1st and 2nd level of the taxonomy in the select box? Or is it possible to show each level of the taxonomy in a separate select box?

Thank you!

Answer 1

Use hierarchical select module to create select list. This will give you a hierarchy with '-' symbol in front all child elements. Then you can alter the form with hook_form_alter function.

function MYMODULE_form_alter(&$form, &$form_state, $form_id) {
 if (($form_id == 'your_form_id')) {
  foreach ($form['tid']['#options'] as $term_key => $term) {
      // Check if this is a child by looking for '-' as first char in string
      $term_value = reset($term->option);
      if($term_value[0] == '-') {
        unset($form['tid']['#options'][$term_key]);
      }
    }
  }
}