October 2017
Intermediate to advanced
566 pages
14h 31m
English
Content preview from Drupal 8 Module Development
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Querying and loading entities
One of the most common things you will do as a programmer is query for stuff, such as data in the database. This is what we were doing a lot in Drupal 7 to get our data. A lot. We'd either use the database API or simple query strings and load our data. However, in Drupal 8 the entity API has become much more robust and offers a layer that reduces the need to query the database directly. In a later chapter, we will see how to do that still for when things become more complex. For now, since most of our structured data belongs in entities, we will use the entity query system for retrieving entities.
The service we use for querying entities is the entity.query service (QueryFactory). So, we can inject this into ...
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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.