Angel Alvarado R.
Soft. and Data engineer.
23 Jan 2017
Altering
Metatag Global Form in Drupal 8
Drupal 8 Altering Metatag
Body:
In order to alter the keywords textfield in the metatag module I used the hook hook_form_alter. Here's the form after being altered
Finding the form ID:
This is easy using Devel module and its webprofiler submodule. Once they are enabled go to admin/config/search/metatag/global. Then hover the ‘form’ icon.
Code
/**
* Implements hook_form_alter().
*
* Altering the form with our custom module.
* This is another option hook_form_metatag_defaults_edit_form_alter
*/
function schedule_form_alter(&$form, FormStateInterface $form_state, $form_id) {
if ($form_id == 'metatag_defaults_edit_form') {
$form['basic']['keywords']['#type'] = 'textarea';
$form['basic']['keywords']['#rows'] = 3;
$form['basic']['keywords']['#maxlength'] = 768;
}
}
* Implements hook_form_alter().
*
* Altering the form with our custom module.
* This is another option hook_form_metatag_defaults_edit_form_alter
*/
function schedule_form_alter(&$form, FormStateInterface $form_state, $form_id) {
if ($form_id == 'metatag_defaults_edit_form') {
$form['basic']['keywords']['#type'] = 'textarea';
$form['basic']['keywords']['#rows'] = 3;
$form['basic']['keywords']['#maxlength'] = 768;
}
}
Troubleshooting:
- I was using Drupal 8.1.8 and wanted to keep using Drupal Console to clear cache. It did not work because I was using Drupal console 0.10.13. To update Drupal Console
- $ drupalconsole —version: "Drupal Console version 0.10.13"
- $ curl https://drupalconsole.com/installer -L -o drupal.phar
- $ mv drupal.phar /usr/local/bin/drupalconsole
- $ chmod +x /usr/local/bin/drupalconsole
- drupalconsole —version: "Drupal Console" version "1.0.0-beta5"
- While trying to use Drupal Console 1.0.0-beta5 I found that it had some issues with the module ‘Metatag’ version beta 9: https://www.drupal.org/node/2752239#comment-11428453. I updated the Metatag module to the dev version https://www.drupal.org/project/metatag/releases/8.x-1.x-dev and was able to use Drupal Console again.
- $ cd ..drupal8projectfolder
- $ drupalconsole cr all
References:
@Todo
Manage metadata block configuration via Configuration Management: https://www.lullabot.com/articles/configuration-management-in-drupal-8-the-key-concepts