Beginning Drupal 8

Chapter 8 ■ Drupal Blocks
On this form, you can override whether the title of the block “Who’s new” appears on the page when the
block is displayed (uncheck the “Display title” check box), specify how many users will appear in the list of
who’s new (“Items per block”), override the title by checking the Override title box and entering a new title in
the text field that appears when you check the box, and assign the block to a new region.
You may wish to only have this block appear on certain pages on your site. By default it appears on
every page. For example, you may want the “Who’s new” block to only appear on the homepage of your
site. At the bottom of the “Configure block” page (see Figure 8-4), you will see the Pages tab in the Visibility
section. To set the block to only appear on the homepage, click the “Show for the listed pages” radio button
and enter in the text box ( is the special term used to represent the homepage of your site).
You could also specify other pages by entering the URL of that page in the text box (for example, /content).
Figure 8-4. Choosing Visibility settings
It is also possible to set a block so that it only appears for specific types of users based on their assigned
roles. Click the Roles tab to examine and set the visibility by user role options. As an example, let’s set the
block to only appear when the person visiting the site is logged in. (See Figure 8-5).
Figure 8-5. Choosing roles-based settings
Once you have clicked the “Authenticated user” check box, you can click the “Save block” button at the
bottom of the page and return to the homepage of your site.
To test your changes, navigate to a page other than the homepage and you’ll see that the “Who’s online”
block is no longer displayed. Log out and return to the homepage and you’ll see that the “Who’s new” block
no longer appears because you are no longer logged in.
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