How to change labels on node add/edit form inside Authoring information box?

Question

I have a Drupal 8 site with the Bartik theme. How can I change label text on node add/edit form inside 'Authoring information' box. This box contains:

-Menu settings
-URL path settings
-Authoring information
-Promotion options

I want to rename some labels and add a new input text field. The main thing I want to change is the Authoring information box and the information inside of it. Is this done with hook form alter?

:

Answer 1

Those are the uid and created base fields, so yes hook_form_alter() or using interface translation are your options.

To add a new element in there, you need to set the right group, from NodeForm:

<?php
if (isset($form['uid'])) {
  $form['uid']['#group'] = 'author';
}

Answer 2

I encountered a similar problem, and I solved it by implementing hook_form_alter().

function MYMODULE_form_alter(&$form, &$form_state, $form_id) {
  if ($form_id == 'node_article_edit_form' || $form_id == 'node_article_form') {
    $form['author']['#title'] = t('Ownership information');
    $form['uid']['widget'][0]['target_id']['#title'] = t('Created by');
    $form['created']['widget'][0]['value']['#title'] = t('Created on');
  }
}