BBGuy

<?php
// Get all countries.
\Drupal::service('address.country_repository')->getList();

BBGuy

#sources 
# https://www.drupal.org/docs/contributed-modules/twig-tweak-2x/cheat-sheet
# https://straightupcraft.com/articles/how-to-check-if-a-variable-or-value-exists-using-twig

# Render a view
  {{ drupal_view('who_s_new', 'block_1') }}

# Get the result of a view
  {{ drupal_view_result('who_s_new', 'block_1') }}

BBGuy

<?php

// Field group does not by default show on commerce relaed entities and those can be added using a hook

/**
 * Implements hook_field_group_content_element_keys_alter
 *
 * Add field groups to product and product variation.
 */
function fcl_commerce_field_group_content_element_keys_alter(&$keys) {

BBGuy

<?php

use Drupal\file\Entity\File;

// Load a file using its ID
  $file = File::load($fid);


// Find a file using its URI

BBGuy

<?php

// Util functions to load a select lists options from a taxonomy or a node field with a text list.

function build_form() {
  $form = [];
  
  // Load a two level deep select tree from a taxonomy
  $options = load_taxonomy_as_select_options('example_taxonomy');
  $form['select_tree'] = [

BBGuy

<?php

public function buildForm(array $form, FormStateInterface $form_state) {

    // If the form was submited the form build has access to the user entered data.
    $user_input = $form_state->getUserInput();
    $has_been_submitted = !empty($user_input);
    
    // multiple submit buttons
    $form['cases']['submit'] = [

BBGuy

<?php

use Drupal\Core\Database\Database;

/**
 * Implements hook_schema().
 *
 *  Notes:
 * 'not null' = requiered
 */

BBGuy

<?php

//******** user ***************//

  $current_user = \Drupal::currentUser();
  $current_user_id \Drupal::currentUser()->id();
  $user = User::load($user_id);


//******** messenger - set messeges ***************//

BBGuy

### Keybase proof

I hereby claim:

  * I am BBGuy on github.
  * I am guy_schneerson (https://keybase.io/guy_schneerson) on keybase.
  * I have a public key whose fingerprint is E0F9 7435 1C0D 3783 458E  5F99 CE91 6F6F 7690 BF49

To claim this, I am signing this object:

BBGuy

<?php

// Working with commerce stock 8.x-1.x

// ****** Usfull commerce code. ******

    // Get the curent store and user 
    $currentStore = \Drupal::service('commerce_store.current_store')->getStore();
    $currentUser =   \Drupal::currentUser();
    // Load the user object