October 2017
Intermediate to advanced
566 pages
14h 31m
English
Content preview from Drupal 8 Module Development
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Altering forms
Before going ahead with our proposed functionality, I would like to open a parenthesis and discuss forms in detail. One of the principal things that you will do as a module developer in Drupal is alter forms defined by other modules or Drupal core. So, it behooves us to talk about it early on and what better moment than now when defining the form itself is still fresh in our minds.
Obviously, the form we just created belongs to us and we can change it however we want. However, many forms out there have been defined by others, and there will be just as many times that you will want to make changes to them. Drupal provides us with a very flexible, albeit still procedural way, of doing so--a suite of alter hooks, but what are ...
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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.