D8CORE-7074 Alter search api custom field to support better tokens

src/Plugin/search_api/processor/CustomValue.php

@@ -0,0 +1,66 @@
+<?php
+
+namespace Drupal\stanford_profile_helper\Plugin\search_api\processor;
+
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\search_api\Datasource\DatasourceInterface;
+use Drupal\search_api\Item\ItemInterface;
+use Drupal\search_api\Plugin\search_api\processor\CustomValue as SearchApiCustomValue;
+use Drupal\stanford_profile_helper\Plugin\search_api\processor\Property\CustomValueProperty;
+
+/**
+ * Extends original custom value search api field to support token_or module.
+ */
+class CustomValue extends SearchApiCustomValue {
+
+  /**
+   * {@inheritdoc}
+   */
+  function getPropertyDefinitions(DatasourceInterface $datasource = NULL) {
+    $properties = [];
+
+    if (!$datasource) {
+      $definition = [
+        'label' => $this->t('Custom value'),
+        'description' => $this->t('Index a custom value with replacement tokens.'),
+        'type' => 'string',
+        'processor_id' => $this->getPluginId(),
+      ];
+      $properties['custom_value'] = new CustomValueProperty($definition);
+    }
+
+    return $properties;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function addFieldValues(ItemInterface $item) {
+    // Get all of the "custom_value" fields on this item.
+    $fields = $this->getFieldsHelper()
+      ->filterForPropertyPath($item->getFields(), NULL, 'custom_value');
+    // If the indexed item is an entity, we can pass that as data to the token
+    // service. Otherwise, only global tokens are available.
+    $entity = $item->getOriginalObject()->getValue();
+    if ($entity instanceof EntityInterface) {
+      $data = [$entity->getEntityTypeId() => $entity];
+    }
+    else {
+      $data = [];
+    }
+
+    $token = $this->getToken();
+    foreach ($fields as $field) {
+      $config = $field->getConfiguration();
+      if (empty($config['value'])) {
+        continue;
+      }
+
+      $field_value = $token->replace($config['value'], $data, ['clear' => TRUE]);
+      if ($field_value !== '') {
+        $field->addValue($field_value);
+      }
+    }
+  }
+
+}

src/Plugin/search_api/processor/Property/CustomValueProperty.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace Drupal\stanford_profile_helper\Plugin\search_api\processor\Property;
+
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\search_api\Item\FieldInterface;
+use Drupal\search_api\Plugin\search_api\processor\Property\CustomValueProperty as SearchApiCustomValueProperty;
+
+/**
+ * Increases max length from the contrib module.
+ */
+class CustomValueProperty extends SearchApiCustomValueProperty {
+
+  /**
+   * {@inheritDoc}
+   */
+  public function buildConfigurationForm(FieldInterface $field, array $form, FormStateInterface $form_state) {
+    $form = parent::buildConfigurationForm($field, $form, $form_state);
+    $form['value']['#maxlength'] = 1000;
+    return $form;
+  }
+
+}

stanford_profile_helper.module

@@ -1077,3 +1077,10 @@ function _stanford_profile_is_decoupled(): bool {
   return (bool) \Drupal::state()
     ->get('stanford_profile_helper.decoupled', FALSE);
 }
+
+/**
+ * Implements hook_search_api_processor_info_alter().
+ */
+function stanford_profile_helper_search_api_processor_info_alter(array &$processors) {
+  $processors['custom_value']['class'] = '\Drupal\stanford_profile_helper\Plugin\search_api\processor\CustomValue';
+}