function Sql::getMessages
Retrieves a traversable object of messages related to source records.
Parameters
array $source_id_values: (optional) The source identifier keyed values of the record, e.g. ['nid' => 5]. If empty (the default), all messages are retrieved.
int $level: (optional) Message severity. If NULL (the default), retrieve messages of all severities.
Return value
\Traversable Retrieves a traversable object of message objects of unspecified class. Each object has the following public properties:
- source_row_hash: the hash of the entire serialized source row data.
- message: the text of the message.
- level: one of MigrationInterface::MESSAGE_ERROR,
MigrationInterface::MESSAGE_WARNING, MigrationInterface::MESSAGE_NOTICE, MigrationInterface::MESSAGE_INFORMATIONAL.
Overrides MigrateIdMapInterface::getMessages
File
- 
              core/modules/ migrate/ src/ Plugin/ migrate/ id_map/ Sql.php, line 743 
Class
- Sql
- Defines the sql based ID map implementation.
Namespace
Drupal\migrate\Plugin\migrate\id_mapCode
public function getMessages(array $source_id_values = [], $level = NULL) {
  $query = $this->getDatabase()
    ->select($this->messageTableName(), 'msg');
  $condition = sprintf('[msg].[%s] = [map].[%s]', $this::SOURCE_IDS_HASH, $this::SOURCE_IDS_HASH);
  $query->addJoin('LEFT', $this->mapTableName(), 'map', $condition);
  // Explicitly define the fields we want. The order will be preserved: source
  // IDs, destination IDs (if possible), and then the rest.
  foreach ($this->sourceIdFields() as $id => $column_name) {
    $query->addField('map', $column_name, "src_{$id}");
  }
  foreach ($this->destinationIdFields() as $id => $column_name) {
    $query->addField('map', $column_name, "dest_{$id}");
  }
  $query->fields('msg', [
    'msgid',
    $this::SOURCE_IDS_HASH,
    'level',
    'message',
  ]);
  if ($source_id_values) {
    $query->condition('msg.' . $this::SOURCE_IDS_HASH, $this->getSourceIdsHash($source_id_values));
  }
  if ($level) {
    $query->condition('msg.level', $level);
  }
  return $query->execute();
}Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.
