Ultimate Guide To Drupal 8.6

Getting OOP-y with It
Let’s look at a few code samples to illustrate Drupal 8’s architecture in action.
Registering a Module
Drupal's functionality is extended through the use of modules. Step 0 to writing a module is describing some metadata in order to register it in the system.
This is done in an "info" file, which are simple YAML files.
example.yaml.info
name: Example
type: module
description: 'An example module.'
core: 8.x
dependencies:
- user
Defining a URL and content
A common thing modules do is expose URLs that produce some sort of output. This is done in two parts: a routing.yml file (which utilizes the Symfony
Routing System to define "route" (URL) metadata) and a "controller" class (as in the standard model-view-controller pattern):
Defining a URL and content
A common thing modules do is expose URLs that produce some sort of output. This is done in two parts: a routing.yml file (which utilizes the Symfony
Routing System to define "route" (URL) metadata) and a "controller" class (as in the standard model-view-controller pattern):
example.routing.yml
example.hello:
path: '/hello'
defaults:
_controller: '\Drupal\example\Controller\HelloController::hello'
requirements:
_permission: 'access content'
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