Drupal 8 leverages a number of advanced PHP language features and sophisticated 3rd party libraries in order to present 3rd party developers
In the sub-sections of the guide after this one, we will be building different things. A custom page, block, entity, field, etc. But all the
Main topic described: module naming and location
Main topic described: project metadata
A composer.json file can be added to your module to define the project itself. You may also define external dependencies for your module in
The following section will walk you through the creation of a simple module. There is a long tradition of having the first program you write
The content() function in the HelloController class will be returning the markup text, when the routing system invokes the page.
Back in your module's root folder, where the .info.yml file is located, add a new file called hello_world.routing.yml and add the following
Now that we have created a placeholder for our module settings page, let us add a menu link for it. The instructions below show how to
For the truly adventurous, these code examples are the abridged version of the full page example from the Examples module.
Contrary to Drupal 7, creating multiple instances of a block to place on your site is the second easiest example of module creation
Blocks in Drupal 8 are instances of the block plugin.
Now let us say that we want to add the ability for the site builder to enter a piece of configuration for each instance of our custom block.
Add the following method to the HelloBlock class. In this example, it is located in the src/Plugin/Block/HelloBlock.php file, but as you
To make use of the configuration of instances of the block, we can modify the build() method of the HelloBlock class:
By adding a single settings yaml file to our module, Drupal will automatically load the contents of that yaml file, and we can access it to
Main topic described: default configuration
From .info to tests, just the basics
Everything's pretty neat so far, but how do we change what we're seeing? With some forms, of course. /src/Form/LoremIpsumForm.php
Remember at the beginning of this tutorial when I said we'd define a block with a form? Well, now's the time to get right on it.
Finally for some QA. Let's check that our module works as expected by writing a few tests of our own which can be run via Drupal itself.
This explains how to create a node-like entity in Drupal 8. That means that we'll create one configuration entity(FooType) which will serve
Main topic described: defining own configuration
In this guide we will go through the following topics:
Field types define the properties and behaviours of fields
The field formatter formats the field data to be viewed by the end user.
Field widgets are used to render the field inside forms.
There are two steps in creating a simple page in Drupal:
Creating a Views display style plugin might seem like an intricate task, but it's easier than it looks. Here's a step by step guide on how