public static function DependentDropdown::getSecondDropdownOptions in Examples for Developers 3.x

Same name and namespace in other branches

1. 8 ajax_example/src/Form/DependentDropdown.php \Drupal\ajax_example\Form\DependentDropdown::getSecondDropdownOptions()

Helper function to populate the second dropdown.

This would normally be pulling data from the database.

Parameters

string $key: This will determine which set of options is returned.

Return value

array Dropdown options

1 call to DependentDropdown::getSecondDropdownOptions()

DependentDropdown::buildForm in modules/ajax_example/src/Form/DependentDropdown.php

The $nojs parameter is specified as a path parameter on the route.

File

modules/ajax_example/src/Form/DependentDropdown.php, line 224

Class

DependentDropdown

Re-populate a dropdown based on form state.

Namespace

Drupal\ajax_example\Form

Code

public static function getSecondDropdownOptions($key = '') {
  switch ($key) {
    case 'String':
      $options = [
        'Violin' => 'Violin',
        'Viola' => 'Viola',
        'Cello' => 'Cello',
        'Double Bass' => 'Double Bass',
      ];
      break;
    case 'Woodwind':
      $options = [
        'Flute' => 'Flute',
        'Clarinet' => 'Clarinet',
        'Oboe' => 'Oboe',
        'Bassoon' => 'Bassoon',
      ];
      break;
    case 'Brass':
      $options = [
        'Trumpet' => 'Trumpet',
        'Trombone' => 'Trombone',
        'French Horn' => 'French Horn',
        'Euphonium' => 'Euphonium',
      ];
      break;
    case 'Percussion':
      $options = [
        'Bass Drum' => 'Bass Drum',
        'Timpani' => 'Timpani',
        'Snare Drum' => 'Snare Drum',
        'Tambourine' => 'Tambourine',
      ];
      break;
    default:
      $options = [
        'none' => 'none',
      ];
      break;
  }
  return $options;
}