1 ajax_example.module | ajax_example_dependent_dropdown_callback($form, $form_state) |
Selects just the second dropdown to be returned for re-rendering.
Since the controlling logic for populating the form is in the form builder function, all we do here is select the element and return it to be updated.
Return value
array: Renderable array (the second dropdown)
Related topics
File
- modules/
examples/ ajax_example/ ajax_example.module, line 607 - AJAX Examples module file with basic examples.
Code
function ajax_example_dependent_dropdown_callback($form, $form_state) {
return $form['dropdown_second'];
}