Drupal 8

Drupal testing framework (PHPUnit) provide 3 types of tests: UnitTest, KernelTest, FunctionalTest (JSFunctionalTest)
UnitTest : Very fast but Unit Only, without drupal.
KernelTest : Is a service test with drupal but without interfaces ans theming.

1. Update drupal core and contrib odules to the last version

Example with composer if you use core-recommended:

composer update  drupal/core-recommended:9.3.14 -W

Draggable table Form Example

Step 1 : Form build

Example: settings for local environnement.

Create the local settings file : local.services.yml the add to local settings.php file

# Local service config

$settings['container_yamls'][] = DRUPAL_ROOT . '/sites/default/local.services.yml';

Step 1 : Add the package cweagans/composer-patches

composer require cweagans/composer-patches

Doc : https://www.drupal.org/docs/drupal-apis/form-api/conditional-form-fields

States that can be applied to a form field element:

Add following packages to composer.json file next to drupal repository

PHP Class using StringTranslationTrait

StringTranslationTrait allow to get t() and formatPlural() methods

Example:

use Drupal\Core\StringTranslation\StringTranslationTrait;

use Drupal\Core\StringTranslation\TranslationInterface;

class MyClass {

State servic eallow to store variables such as state of the server temporarily or permanently

Drupal settings file can contains variable which can use to use for different configuration in different environments.

Example:

env_name

default_info_nid

$settings['env_name'] = 'Local';

$settings['default_info_nid'] = 1';