Code

Using recommended-project template

composer create-project drupal/recommended-project my-project

For more information, see : https://www.drupal.org/docs/develop/using-composer/starting-a-site-using-drupal-composer-project-templates

Drupal 8 Url Object

use Drupal\Core\Url;

Create a Url

Create Url from route name

$url = Url::fromRoute('<current>');

$url = Url::fromRoute('entity.node.canonical', ['node' => 1], []);

Example :

Step 1 : Add libraries. Example: (With theme / or module : mytheme)

On : mytheme.libraries.yml file

Here an example of configurable block.

Initialisation - Create link to the script (Optional).

ln -s core/scripts/run-tests.sh ~/bin

Run Test and open rest in web browser.

php core/scripts/run-tests.sh --browser --class "Drupal\YOUR_MODULE\Tests\JustTest"

NOTE: I don't know this is the best practice, anyway it's working !!!.

Get Database Schema

$schema = \Drupal\Core\Database\Database::getConnection()->schema();

Entity Field types, Data types

(BaseFieldDefinition::create types)

Create a custom module (here : example)

For active themes by route you first have to define a service in your $module.services.yml file:

On example.services.yml

Add:

Get the default cache bin

$cache = \Drupal::cache();

To get a particular cache bin (here 'render'):

$render_cache = \Drupal::cache('render');