class ArrayBuild

Builds an array based on the key and value configuration.

The array_build plugin builds a single associative array by extracting keys and values from each array in the input value, which is expected to be an array of arrays. The keys of the returned array will be determined by the 'key' configuration option, and the values will be determined by the 'value' option.

Available configuration keys

• key: The key used to lookup a value in the source arrays to be used as a key in the destination array.
• value: The key used to lookup a value in the source arrays to be used as a value in the destination array.

Example:

Consider the migration of language negotiation by domain. The source is an array of all the languages:

languages: Array
(
  [0] => Array
    (
      [language] => en
...
      [domain] => http://example.com
    )
  [1] => Array
    (
      [language] => fr
...
      [domain] => http://fr.example.com
    )
...

The destination should be an array of all the domains keyed by their language code:

domains: Array
(
  [en] => http://example.com
  [fr] => http://fr.example.com
...

The array_build process plugin would be used like this:

process:
  domains:
    plugin: array_build
    key: language
    value: domain
    source: languages

Hierarchy

• class \Drupal\Component\Plugin\PluginBase implements \Drupal\Component\Plugin\PluginInspectionInterface, \Drupal\Component\Plugin\DerivativeInspectionInterface
  • class \Drupal\Core\Plugin\PluginBase extends \Drupal\Component\Plugin\PluginBase uses \Drupal\Core\StringTranslation\StringTranslationTrait, \Drupal\Core\DependencyInjection\DependencySerializationTrait, \Drupal\Core\Messenger\MessengerTrait
    • class \Drupal\migrate\ProcessPluginBase extends \Drupal\Core\Plugin\PluginBase implements \Drupal\migrate\Plugin\MigrateProcessInterface
      • class \Drupal\migrate\Plugin\migrate\process\ArrayBuild extends \Drupal\migrate\ProcessPluginBase

Expanded class hierarchy of ArrayBuild

See also

\Drupal\migrate\Plugin\MigrateProcessInterface

File

core/modules/migrate/src/Plugin/migrate/process/ArrayBuild.php, line 73

Namespace

class ArrayBuild extends ProcessPluginBase {
    
    /**
     * {@inheritdoc}
     */
    public function transform($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
        $new_value = [];
        foreach ((array) $value as $old_value) {
            // Checks that $old_value is an array.
            if (!is_array($old_value)) {
                throw new MigrateException("The input should be an array of arrays");
            }
            // Checks that the key exists.
            if (!array_key_exists($this->configuration['key'], $old_value)) {
                throw new MigrateException("The key '" . $this->configuration['key'] . "' does not exist");
            }
            // Checks that the value exists.
            if (!array_key_exists($this->configuration['value'], $old_value)) {
                throw new MigrateException("The key '" . $this->configuration['value'] . "' does not exist");
            }
            $new_value[$old_value[$this->configuration['key']]] = $old_value[$this->configuration['value']];
        }
        return $new_value;
    }

}

Members