Version 1

[yaffs-website] / web / core / modules / field / src / Plugin / migrate / source / d6 / Field.php

diff --git a/web/core/modules/field/src/Plugin/migrate/source/d6/Field.php b/web/core/modules/field/src/Plugin/migrate/source/d6/Field.php
new file mode 100644 (file)
index 0000000..7c9e620
--- /dev/null
+++ b/web/core/modules/field/src/Plugin/migrate/source/d6/Field.php
@@ -0,0 +1,106 @@
+<?php
+
+namespace Drupal\field\Plugin\migrate\source\d6;
+
+use Drupal\migrate\Row;
+use Drupal\migrate_drupal\Plugin\migrate\source\DrupalSqlBase;
+
+/**
+ * Drupal 6 field source from database.
+ *
+ * @MigrateSource(
+ *   id = "d6_field",
+ *   source_provider = "content"
+ * )
+ */
+class Field extends DrupalSqlBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function query() {
+    $query = $this->select('content_node_field', 'cnf')
+      ->fields('cnf', [
+        'field_name',
+        'type',
+        'global_settings',
+        'required',
+        'multiple',
+        'db_storage',
+        'module',
+        'db_columns',
+        'active',
+        'locked',
+      ])
+      ->distinct();
+    // Only import fields which are actually being used.
+    $query->innerJoin('content_node_field_instance', 'cnfi', 'cnfi.field_name = cnf.field_name');
+
+    return $query;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function fields() {
+    return [
+      'field_name' => $this->t('Field name'),
+      'type' => $this->t('Type (text, integer, ....)'),
+      'widget_type' => $this->t('An instance-specific widget type'),
+      'global_settings' => $this->t('Global settings. Shared with every field instance.'),
+      'required' => $this->t('Required'),
+      'multiple' => $this->t('Multiple'),
+      'db_storage' => $this->t('DB storage'),
+      'module' => $this->t('Module'),
+      'db_columns' => $this->t('DB Columns'),
+      'active' => $this->t('Active'),
+      'locked' => $this->t('Locked'),
+    ];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function prepareRow(Row $row) {
+    // The instance widget_type helps determine what D8 field type we'll use.
+    // Identify the distinct widget_types being used in D6.
+    $widget_types = $this->select('content_node_field_instance', 'cnfi')
+      ->fields('cnfi', ['widget_type'])
+      ->condition('field_name', $row->getSourceProperty('field_name'))
+      ->distinct()
+      ->orderBy('widget_type')
+      ->execute()
+      ->fetchCol();
+    // Arbitrarily use the first widget_type - if there are multiples, let the
+    // migrator know.
+    $row->setSourceProperty('widget_type', $widget_types[0]);
+    if (count($widget_types) > 1) {
+      $this->migration->getIdMap()->saveMessage(
+        ['field_name' => $row->getSourceProperty('field_name')],
+        $this->t('Widget types @types are used in Drupal 6 field instances: widget type @selected_type applied to the Drupal 8 base field', [
+          '@types' => implode(', ', $widget_types),
+          '@selected_type' => $widget_types[0],
+        ])
+      );
+    }
+
+    // Unserialize data.
+    $global_settings = unserialize($row->getSourceProperty('global_settings'));
+    $db_columns = unserialize($row->getSourceProperty('db_columns'));
+    $row->setSourceProperty('global_settings', $global_settings);
+    $row->setSourceProperty('db_columns', $db_columns);
+    return parent::prepareRow($row);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getIds() {
+    $ids['field_name'] = [
+      'type' => 'string',
+      'alias' => 'cnf',
+    ];
+    return $ids;
+  }
+
+}