BBGuy

<?php

  // Get the request object.
  $request = \Drupal::request();
  // Query - get all parameter. 
  $q = $request->query->all();
  // Check if a query parameter exists.
  if ($request->query->has('commerce_product_v_id')) {
    // Get the query parameter.
    $pvid = $request->query->get('commerce_product_v_id');

BBGuy

/**
 * Implements hook_form_alter().
 */
function dwwcommerce_form_alter(&$form, &$form_state, $form_id) {
  // The style edit form.
  if ($form_id == 'product_style_node_form') {
    // Add a custom submit.
    $form['actions']['submit']['#submit'][] = 'mymodule_node_prod_display_form_submit';
  }
}

BBGuy

<?php

// some examples on
// https://docs.drupalcommerce.org/commerce2/developer-guide/products/product-architecture/code-recipes
// https://docs.drupalcommerce.org/commerce2/developer-guide/products/product-management/code-recipes
// https://docs.drupalcommerce.org/commerce2/developer-guide/products/displaying-products/code-recipes

// Work with orders.
    /** @var \Drupal\commerce_order\Entity\OrderInterface $order */
    $order = \Drupal::entityTypeManager()->getStorage('commerce_order')->load($order_id);

BBGuy

<?php

/**
 * Get the node ID for a commerce product using it's product ID.
 *
 * Asumes only one. If not will return the first node referencing the product.
 * If the commerce product has no product display will return FALSE.
 */
function _get_product_referencing_nid($product_id) {
  $query = new EntityFieldQuery();

BBGuy

// Using the Entity API
  $image = $MY_ENITIY->field_image->value();
  $variables = array(
        'style_name' => 'my_style__img',
        'path' => $centre['image']['uri'],
        'width' => $centre['image']['width'],
        'height' => $centre['image']['height'],
  );
  $img = theme('image_style', $variables );
  

BBGuy

<?php

// Basics
// Get a value.
$value = $wrapper->field_x->value();
// If the field is a reference field you will get the field object
// To get the wrapper back use:
$wrapper_b = $wrapper->field_ref;

// To set a value.

BBGuy

drush vset comment_maintain_node_statistics TRUE

BBGuy

<?php
        // Get a nicely formatted amount for Ex VAT & Vat order totals.
        
        // Get the order wrapper
        $order_wrapper = entity_metadata_wrapper('commerce_order', $order);
        
        // Order total.
        $order_total = $order_wrapper->commerce_order_total->value();
        
        // Get ex vat amount.

BBGuy

<?php
/**
 * Implementation of hook_commerce_currency_info_alter().
 */
function MyModule_commerce_currency_info_alter(&$currencies, $langcode) {
  // Add a curreny format callback so we can take over formating.
  $currencies['RUB']['format_callback'] = 'MyModule_commerce_currency_format';
}

BBGuy

drush dl entity_translation
drush en entity_translation -y
drush dl title
drush en title -y
drush dl variable
drush en variable -y
drush dl i18n
drush en i18n, i18n_translation, i18n_field, i18n_menu -y