Issue #3312090 by fathima.asmat: Update_N hook fail for field type change for...

  // Caches have to be cleared first to ensure new fields are detected in the

  // code.

  drupal_flush_all_caches();

  /** @var \Drupal\Core\Entity\EntityFieldManagerInterface $entityFieldManager */

  $entityFieldManager = \Drupal::service('entity_field.manager');

  $entityDefinitionUpdateManager = \Drupal::entityDefinitionUpdateManager();

  $entityTypeManager = \Drupal::entityTypeManager();

  $iframeFieldMap = $entityFieldManager->getFieldMapByFieldType('iframe');

  $schema = \Drupal::database()->schema();

  // Loop through the array of iframe fields keyed by entity type...

  foreach ($iframeFieldMap as $entityTypeId => $fields) {

    foreach (array_keys($fields) as $fieldName) {

      $fieldStorageDefinition = $entityDefinitionUpdateManager->getFieldStorageDefinition($fieldName, $entityTypeId);

      // ... if the field is in a ContentEntity stored in SQL...

      $storage = $entityTypeManager->getStorage($entityTypeId);

      if ($storage instanceof SqlContentEntityStorage) {

        // ... get a map of field columns to SQL columns for that field.

        $tableMapping = $storage->getTableMapping([

          $fieldName => $fieldStorageDefinition,

        ]);

        $tableNames = $tableMapping->getDedicatedTableNames();

        $columns = $tableMapping->getColumnNames($fieldName);

        // For each table (e.g.: data, revision), check whether the

        // 'allowfullscreen' column exists. If it does not, create it.

        foreach ($tableNames as $tableName) {

          $field_schema = $fieldStorageDefinition->getSchema();

          $fieldExists = $schema->fieldExists($tableName, $columns['allowfullscreen']);

          $tableExists = $schema->tableExists($tableName);

          if ($fieldExists === FALSE && $tableExists) {

            $schema->addField($tableName, $columns['allowfullscreen'], $field_schema['columns']['allowfullscreen']);

          }

        }

      }

      // Make sure the field storage definition is updated.

      $entityDefinitionUpdateManager->updateFieldStorageDefinition($fieldStorageDefinition);

    }

  }

  // 8204 fixes the database schema

}

/**

 * Add a headerlevel column to iframe fields that do not have it yet.

 */

function iframe_update_8201(&$sandbox) {

  /** @var \Drupal\Core\Entity\EntityFieldManagerInterface $entityFieldManager */

  $entityFieldManager = \Drupal::service('entity_field.manager');

  $entityDefinitionUpdateManager = \Drupal::entityDefinitionUpdateManager();

  $entityTypeManager = \Drupal::entityTypeManager();

  $iframeFieldMap = $entityFieldManager->getFieldMapByFieldType('iframe');

  $schema = \Drupal::database()->schema();

  // Loop through the array of iframe fields keyed by entity type...

  foreach ($iframeFieldMap as $entityTypeId => $fields) {

    foreach (array_keys($fields) as $fieldName) {

      $fieldStorageDefinition = $entityDefinitionUpdateManager->getFieldStorageDefinition($fieldName, $entityTypeId);

      // ... if the field is in a ContentEntity stored in SQL...

      $storage = $entityTypeManager->getStorage($entityTypeId);

      if ($storage instanceof SqlContentEntityStorage) {

        // ... get a map of field columns to SQL columns for that field.

        $tableMapping = $storage->getTableMapping([

          $fieldName => $fieldStorageDefinition,

        ]);

        $tableNames = $tableMapping->getDedicatedTableNames();

        $columns = $tableMapping->getColumnNames($fieldName);

        // For each table (e.g.: data, revision), check whether the

        // 'allowfullscreen' column exists. If it does not, create it.

        foreach ($tableNames as $tableName) {

          $field_schema = $fieldStorageDefinition->getSchema();

          $fieldExists = $schema->fieldExists($tableName, $columns['headerlevel']);

          $tableExists = $schema->tableExists($tableName);

          if ($fieldExists === FALSE && $tableExists) {

            $schema->addField($tableName, $columns['headerlevel'], $field_schema['columns']['headerlevel']);

          }

        }

      }

      // Make sure the field storage definition is updated.

      $entityDefinitionUpdateManager->updateFieldStorageDefinition($fieldStorageDefinition);

    }

  }

  // 8204 fixes the database schema

}

/**

 * dummy for not working update-hook

 */

function iframe_update_8203(&$sandbox) {

  // 8204 fixes the database schema

}

/**