Back up Your Drupal Site
TopicA reliable backup will allow you to restore your site if something goes wrong.
Use the Configuration API to access configuration data stored by a module, provide default configuration, create settings forms, and other tasks such as overriding settings for a local environment.
Xdebug
TopicDebugging your Drupal codebase can be made substantially easier by learning how to enable and configure the Xdebug PHP extension.
CSS in Drupal
TopicCascading Style Sheets (CSS) files are added as an asset library through a theme’s libraries configuration file. HTML attributes, including classes and IDs, are commonly added in template files with Twig.
The Render API consists of a standard format for describing data using structured arrays and a process for converting those arrays into the HTML a user sees when interacting with a Drupal site.
Drupal User Guide
Guide
Twig is a template engine for PHP, which is the language used in Drupal. Twig can be used to design templates in generic PHP applications as well as Drupal themes.
Object-Oriented PHP
TopicObject-oriented PHP utilizes classes and objects to organize code into reusable chunks. This approach helps us organize complex applications, such as Drupal, into modular code called classes that can be reused across the entire system.
On occasion, you may need to modify the behavior of entity types defined by another module. Thankfully, Drupal includes several alter hooks that can be used to override the behavior of another entity.
In this tutorial, we will:
- Walk through the common Entity API hooks
- Look at example implementations of each
- And discuss the use cases for each
By the end of this tutorial, you will have a better understanding of how to override the default behavior of an entity type provided by Drupal core (or another contributed module) within your custom code.