Version 1

[yaffs-website] / web / core / modules / migrate / src / Plugin / migrate / process / Callback.php

diff --git a/web/core/modules/migrate/src/Plugin/migrate/process/Callback.php b/web/core/modules/migrate/src/Plugin/migrate/process/Callback.php
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+++ b/web/core/modules/migrate/src/Plugin/migrate/process/Callback.php
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+<?php
+
+namespace Drupal\migrate\Plugin\migrate\process;
+
+use Drupal\migrate\MigrateExecutableInterface;
+use Drupal\migrate\ProcessPluginBase;
+use Drupal\migrate\Row;
+
+/**
+ * Passes the source value to a callback.
+ *
+ * The callback process plugin allows simple processing of the value, such as
+ * strtolower(). The callable takes the source value as the single mandatory
+ * argument. No additional arguments can be passed to the callback.
+ *
+ * Available configuration keys:
+ * - callable: The name of the callable method.
+ *
+ * Examples:
+ *
+ * @code
+ * process:
+ *   destination_field:
+ *     plugin: callback
+ *     callable: strtolower
+ *     source: source_field
+ * @endcode
+ *
+ * An example where the callable is a static method in a class:
+ *
+ * @code
+ * process:
+ *   destination_field:
+ *     plugin: callback
+ *     callable:
+ *       - '\Drupal\Component\Utility\Unicode'
+ *       - strtolower
+ *     source: source_field
+ * @endcode
+ *
+ * @see \Drupal\migrate\Plugin\MigrateProcessInterface
+ *
+ * @MigrateProcessPlugin(
+ *   id = "callback"
+ * )
+ */
+class Callback extends ProcessPluginBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function transform($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
+    if (is_callable($this->configuration['callable'])) {
+      $value = call_user_func($this->configuration['callable'], $value);
+    }
+    return $value;
+  }
+
+}