function field_add_more_submit

Submit handler for the "Add another" button of a field form.

This handler is run regardless of whether JS is enabled or not. It makes changes to the form state. If the button was clicked with JS disabled, then the page is reloaded with the complete rebuilt form. If the button was clicked with JS enabled, then ajax_form_callback() calls field_add_more_js() to return just the changed part of the form.

File

core/modules/field/field.form.inc, line 368

Field forms management.

Code

function field_add_more_submit($form, &$form_state) {
  $button = $form_state['triggering_element'];

  // Go one level up in the form, to the widgets container.
  $element = backdrop_array_get_nested_value($form, array_slice($button['#array_parents'], 0, -1));
  $field_name = $element['#field_name'];
  $langcode = $element['#language'];
  $parents = $element['#field_parents'];

  // Increment the items count.
  $field_state = field_form_get_state($parents, $field_name, $langcode, $form_state);
  $field_state['items_count']++;
  field_form_set_state($parents, $field_name, $langcode, $form_state, $field_state);

  $form_state['rebuild'] = TRUE;
}