Mastering Drupal 8

Modifying field formats

Another handy feature is being able to modify the format that a field is currently using. This is often known as a Field Formatter. Field Formatters provide additional configuration per field and allow us to change the length of a Textfield, modify the number of rows to display in a text area or, more importantly, add an HTML5 Placeholder to a field.

Let's begin by navigating back to our Manage form display page and configure the Headline field:

1. Click on the gear icon to the right of the Headline Textfield.
2. Add this text to the Placeholder field: Please enter a descriptive Headline.

3. Click on the Update button.