0

I am trying to alter the node form layout in a form alter hook.

I altered the node form and added a field set in which I grouped couple of existing fields into a fieldset. Then hid the existing fields so that they don't show up twice:in the fieldset and standalone.

However, after changing the structure, the field content are not being saved on submission. I thought this is due to drupal internal validation. So I thought I would use a validation hook to map the new fields structure to their existing (hidden fields). But I am facing couple of issues:

  1. can't retrieve the values in the validation function using $formstate->getValue().

  2. Changing the structure causing the fields to not be processed correctly.

    // Group 2 fields: 1 date field and another text field in custom group 
    $form['custom_group'] = [
      '#tree' => TRUE,
      '#type' => 'details',
      '#title' => t('Custom Group'),
      '#weight' => 19,
      '#collapsible' => TRUE,
      'existing_field_1' => $form['existing_field_1'], // is a date field
      'existing_field_2' => $form['existing_field_2'],
    ];
    // Hide the original fields.
    $form['existing_field_1']['#access'] = FALSE;
    $form['existing_field_2']['#access'] = FALSE;

    // Add our validation to try to force the values to be saved:
    $form['#validate'][] = 'my_module_form_node_form_validate';
    // make my validation first but probably unnecessary: 
    $form['#validate'] = array_reverse($form['#validate']);

And in the validation function:

function my_module_form_node_form_validate($form, $form_state) {
  // grab the field values:
  $my_values = $form_state->getValue('custom_group')
}

But I cannot access them this way.

After digging into the issue I was able to access the values:

    function my_module_form_node_form_validate($form, $form_state) {
      $values = $form_state->getUserInput();
      $form_state->setValue('existing_field_1', $values['custom_group']['existing_field_1'];
    }

However issue #2 remains. For example, ->getUserInput(); is returning the raw value of the existing_field_1 which has type date. And the value is just a raw string instead of the normal DateTime object. So it's failing validation. To clarify ->getUserInput() returns raw string as expected 01-01-2019 and not valid datetime. So I end up with datetime validation error.

I could do the processing myself but that would be an overkill. So, in short, is it possible to use an alter hook two group fields (date/text/esle) into a field set and let drupal process the values?

2

$form_state is an object, not an array. You should be able to get the values like $my_value = $form_state->getValue('custom_group'). Or get all values like $values = $form_state->getValues().

See: Introduction to Form API

  • sorry I updated the question, I was using ->getValue but it did not work .What worked is getUserInput . – awm Mar 25 at 19:37

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.