public function ExportTermsForm::myAjaxCallback in Taxonomy Manager 2.0.x

File

src/Form/ExportTermsForm.php, line 181

Class

ExportTermsForm

Form for exporting given terms.

Namespace

Drupal\taxonomy_manager\Form

Code

public function myAjaxCallback(array &$form, FormStateInterface $form_state) {

  // Prepare our textfield. check if the example select field has a selected option.
  if ($selectedValue = $form_state
    ->getValue('example_select')) {

    // Get the text of the selected option.
    $selectedText = $form['example_select']['#options'][$selectedValue];

    // Place the text of the selected option in our textfield.
    $form['output']['#value'] = $selectedText;
  }

  // Return the prepared textfield.
  // return $form;.
  $response = new AjaxResponse();
  $response
    ->addCommand(new ReplaceCommand('#edit-output', $form['output']));
  return $response;
}