March 2019
Intermediate to advanced
580 pages
15h 3m
English
Content preview from Drupal 8 Module Development - Second Edition
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Entity CRUD hooks
Whenever entities are created, updated, or deleted, a set of hooks are fired that allow us to act on this information. We can use these hooks simply to perform some actions whenever this happens or even make changes to the entity being saved. So let's see what we have.
A very useful one is hook_entity_presave(), which gets fired during the saving process of an entity (both content and configuration). This applies to both when the entity is first created, as well as when it is being updated. Moreover, it allows us to inspect the original entity and detect changes made to it. And finally, since the entity has not yet been persisted, it allows us to make changes to it ourselves. So very powerful stuff.
Since Drupal 8 is very ...
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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.
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