Drupal 8 is a Great Way of Developing a Useful and Valuable Website – Part Eight


Sharing is caring!

Programming is part of developing websites, and when you use Drupal to develop your website, it would be a very good idea, to learn programming. In today’s article we are going to talk about Object-Oriented in PHP (OOP PHP or OO-PHP) in Drupal 8; which is a system of writing code, where developers are required to structure their code into reusable chunks of code.

An object is a piece of code that does something for an application, for example, a wheel is part of the car and does something for the car, so that the car is usable; however, the wheel is not the car it just forms part of the car. Well objects function the same way, in the sense that they do something for the application, such connecting to a database or calling a service to perform an operation for the application.

Complex applications such as Drupal, are better organized into classes or modular code. Classes can be used throughout a system, to keep things in order and well maintained. In order to understand how to implement custom functionality, the architecture of modules, and the various forms they can take, developers should have a solid understanding of OOP PHP.

In Drupal 8 for example, OOP PHP is used heavily in its code base, because it provides so many benefits, such as maintainability and scalability. In the modern OO-PHP developers have at their disposal, things such as encapsulation, inheritance, interface, OO-PHP and design patterns, that developers can use to improve their skill.

OO-PHP can better serve Drupal 8 to be a better tool for its users, so that developers can build better websites. Hopefully you already know PHP, because our discussion is focused more on Drupal 8 and all the technologies it has in order to better serve its users.

We are going to talk now about YAML. The human-readable data serialization format, known as YAML, is heavily used in Drupal 8; therefore, if you’d like to use Drupal 8, you’d have to know and understand YAML syntax.

YAML stands for YAML Ain’t Markup Language, although many people confuse this technology with a markup language. YAML is supported by many programming languages, it is similar to JSON, because it is a superset of JSON, which means that you can use JSON type syntax to write your YAML files.

It makes sense for th Drupal 8 project to use YAML, because Symphony already uses it, and Drupal 8 is built on top of Symphony. All YAML files are represented as key, separator and the value, like this (name: Joe Shindelar). New lines and tabbed characters are syntactically important, and it can support different data types, such as string, int, float, Boolean, null and UNIX timestamp. Compound data types or collections are also supported in YAML, this is an associative array or a list. It is also important that you keep your indentation correct in a YAML file, so that it can be utilized by Drupal.

Another important component of Drupal 8 is Symphony, which is written in PHP as an application framework that is used to build website applications. Reusable components are part of the Symphony framework, which are used by Drupal 8 core library. In Symphony there is a buzz word known as Bundles, which is a folder, where we put code, such as a feature that can do some registration validation stuff. Bundles can be used to put anything, such as PHP code, configuration files, templates, CSS files and other people’s bundles.

Another very important component in Drupal 8, is Twig, which is the default template engine used in Drupal 8. As developers using Drupal 8, you’d need to know twig to make changes, to the output of your Drupal website pages.

The PHP templating for Drupal 8, is used to output PHP variables inside HTML, by using double curly braces. So you’d set up your variable in your PHP file, then when you are ready to print it on your Twig template, then you would follow this syntax {{ variable_name }}, you can also use the {{% %}} to do something such as a for loop or a conditional statement, and if you want to comment something our you would use {{# #}}.

Thank you for reading this article!!!