October 2017
Intermediate to advanced
566 pages
14h 31m
English
Content preview from Drupal 8 Module Development
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Field widget
Our new license plate field type could be added to an entity type, but there would be no way users can use it. For this, we will need at least a widget. A given field type can work, however, with multiple widgets. So, let's create that default license plate widget plugin we referenced in the annotation of the field type, which belongs in the Plugin/Field/FieldWidget namespace of our module:
namespace Drupal\license_plate\Plugin\Field\FieldWidget; use Drupal\Core\Field\FieldItemListInterface; use Drupal\Core\Field\WidgetBase; use Drupal\Core\Form\FormStateInterface; /** * Plugin implementation of the 'default_license_plate_widget' widget. * * @FieldWidget( * id = "default_license_plate_widget", * label = @Translation("Default ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.