July 2017
Intermediate to advanced
456 pages
11h 32m
English
Content preview from Mastering Drupal 8
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Annotations
An annotation is metadata that can be added to a file, class, function, or variable. These can be used to add information describing plugins without having to write a separate function. In Drupal 7, in order to expose a block, you needed to implement at least two hooks: hook_block_info to describe the block, give it a label, a machine name, describe caching, and so on; and then at least hook_block_view to render it. The same file that contains the plugin implementation also contains the metadata about it. It's encoded as a PHP docblock on the class itself. You can see that above the class declaration in our TestBlock.php file.
/*** Provides a 'TestBlock' block.** @Block(* id = "test_block",* admin_label = @Translation("Test block"), ...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.