improved first step of create order form

web/modules/custom/materio_commerce/src/Plugin/EntityReferenceSelection/UserByEmailSelection.php

@@ -0,0 +1,55 @@
+<?php
+
+namespace Drupal\materio_commerce\Plugin\EntityReferenceSelection;
+
+use Drupal\Core\Database\Connection;
+use Drupal\Core\Database\Query\Condition;
+use Drupal\Core\Database\Query\SelectInterface;
+use Drupal\Core\Entity\EntityFieldManagerInterface;
+use Drupal\Core\Entity\EntityRepositoryInterface;
+use Drupal\Core\Entity\EntityTypeBundleInfoInterface;
+use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Drupal\Core\Entity\Plugin\EntityReferenceSelection\DefaultSelection;
+use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Session\AccountInterface;
+use Drupal\user\RoleInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+use Drupal\user\Plugin\EntityReferenceSelection\UserSelection;
+
+/**
+ * Provides specific access control for the user entity type.
+ *
+ * @EntityReferenceSelection(
+ *   id = "default:user_by_email",
+ *   label = @Translation("User selection By Email"),
+ *   entity_types = {"user"},
+ *   group = "default",
+ *   weight = 3
+ * )
+ */
+class UserByEmailSelection extends UserSelection {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function entityQueryAlter(SelectInterface $query) {
+    parent::entityQueryAlter($query);
+
+    $conditions = &$query->conditions();
+    foreach ($conditions as $key => $condition) {
+      if ($key !== '#conjunction' && is_string($condition['field']) && $condition['field'] === 'users_field_data.name') {
+        unset($conditions[$key]);
+        
+        $or = new Condition('OR');
+        $or->condition('users_field_data.name', $condition['value'], $condition['operator']);
+        $or->condition('mail', $condition['value'], $condition['operator']);
+        $query->condition($or);
+        $t="t";
+
+      }
+    }
+  }
+
+}