www.aleph1.co.uk Git - yaffs-website/blob - web/core/modules/field/src/Plugin/migrate/source/d6/Field.php

   1 <?php
   2
   3 namespace Drupal\field\Plugin\migrate\source\d6;
   4
   5 use Drupal\migrate\Row;
   6 use Drupal\migrate_drupal\Plugin\migrate\source\DrupalSqlBase;
   7
   8 /**
   9  * Drupal 6 field source from database.
  10  *
  11  * @MigrateSource(
  12  *   id = "d6_field",
  13  *   source_module = "content"
  14  * )
  15  */
  16 class Field extends DrupalSqlBase {
  17
  18   /**
  19    * {@inheritdoc}
  20    */
  21   public function query() {
  22     $query = $this->select('content_node_field', 'cnf')
  23       ->fields('cnf', [
  24         'field_name',
  25         'type',
  26         'global_settings',
  27         'required',
  28         'multiple',
  29         'db_storage',
  30         'module',
  31         'db_columns',
  32         'active',
  33         'locked',
  34       ])
  35       ->distinct();
  36     // Only import fields which are actually being used.
  37     $query->innerJoin('content_node_field_instance', 'cnfi', 'cnfi.field_name = cnf.field_name');
  38
  39     return $query;
  40   }
  41
  42   /**
  43    * {@inheritdoc}
  44    */
  45   public function fields() {
  46     return [
  47       'field_name' => $this->t('Field name'),
  48       'type' => $this->t('Type (text, integer, ....)'),
  49       'widget_type' => $this->t('An instance-specific widget type'),
  50       'global_settings' => $this->t('Global settings. Shared with every field instance.'),
  51       'required' => $this->t('Required'),
  52       'multiple' => $this->t('Multiple'),
  53       'db_storage' => $this->t('DB storage'),
  54       'module' => $this->t('Module'),
  55       'db_columns' => $this->t('DB Columns'),
  56       'active' => $this->t('Active'),
  57       'locked' => $this->t('Locked'),
  58     ];
  59   }
  60
  61   /**
  62    * {@inheritdoc}
  63    */
  64   public function prepareRow(Row $row) {
  65     // The instance widget_type helps determine what D8 field type we'll use.
  66     // Identify the distinct widget_types being used in D6.
  67     $widget_types = $this->select('content_node_field_instance', 'cnfi')
  68       ->fields('cnfi', ['widget_type'])
  69       ->condition('field_name', $row->getSourceProperty('field_name'))
  70       ->distinct()
  71       ->orderBy('widget_type')
  72       ->execute()
  73       ->fetchCol();
  74     // Arbitrarily use the first widget_type - if there are multiples, let the
  75     // migrator know.
  76     $row->setSourceProperty('widget_type', $widget_types[0]);
  77     if (count($widget_types) > 1) {
  78       $this->migration->getIdMap()->saveMessage(
  79         ['field_name' => $row->getSourceProperty('field_name')],
  80         $this->t('Widget types @types are used in Drupal 6 field instances: widget type @selected_type applied to the Drupal 8 base field', [
  81           '@types' => implode(', ', $widget_types),
  82           '@selected_type' => $widget_types[0],
  83         ])
  84       );
  85     }
  86
  87     // Unserialize data.
  88     $global_settings = unserialize($row->getSourceProperty('global_settings'));
  89     $db_columns = unserialize($row->getSourceProperty('db_columns'));
  90     $row->setSourceProperty('global_settings', $global_settings);
  91     $row->setSourceProperty('db_columns', $db_columns);
  92     return parent::prepareRow($row);
  93   }
  94
  95   /**
  96    * {@inheritdoc}
  97    */
  98   public function getIds() {
  99     $ids['field_name'] = [
 100       'type' => 'string',
 101       'alias' => 'cnf',
 102     ];
 103     return $ids;
 104   }
 105
 106 }