class MachineName

Same name in this branch
  1. 9 core/modules/views/src/Plugin/views/field/MachineName.php \Drupal\views\Plugin\views\field\MachineName
  2. 9 core/lib/Drupal/Core/Render/Element/MachineName.php \Drupal\Core\Render\Element\MachineName
Same name and namespace in other branches
  1. 11.x core/modules/views/src/Plugin/views/field/MachineName.php \Drupal\views\Plugin\views\field\MachineName
  2. 11.x core/modules/migrate/src/Plugin/migrate/process/MachineName.php \Drupal\migrate\Plugin\migrate\process\MachineName
  3. 11.x core/lib/Drupal/Core/Render/Element/MachineName.php \Drupal\Core\Render\Element\MachineName
  4. 10 core/modules/views/src/Plugin/views/field/MachineName.php \Drupal\views\Plugin\views\field\MachineName
  5. 10 core/modules/migrate/src/Plugin/migrate/process/MachineName.php \Drupal\migrate\Plugin\migrate\process\MachineName
  6. 10 core/lib/Drupal/Core/Render/Element/MachineName.php \Drupal\Core\Render\Element\MachineName
  7. 8.9.x core/modules/views/src/Plugin/views/field/MachineName.php \Drupal\views\Plugin\views\field\MachineName
  8. 8.9.x core/modules/migrate/src/Plugin/migrate/process/MachineName.php \Drupal\migrate\Plugin\migrate\process\MachineName
  9. 8.9.x core/lib/Drupal/Core/Render/Element/MachineName.php \Drupal\Core\Render\Element\MachineName

Creates a machine name.

The machine_name process plugin takes the source value and turns it into a machine-readable name via the following four steps: 1. Language decorations and accents are removed by transliterating the source value. 2. The resulting value is made lowercase. 3. Any special characters are replaced with an underscore. By default, anything that is not a number or a letter is replaced, but additional characters can be allowed or further restricted by using the replace_pattern configuration as described below. 4. Any duplicate underscores either in the source value or as a result of replacing special characters are removed.

Available configuration keys:

  • replace_pattern: (optional) A custom regular expression pattern to replace special characters with an underscore using preg_replace(). This can be used to allow additional characters in the machine name. Defaults to /[^a-z0-9_]+/

Example:


process:
  bar:
    plugin: machine_name
    source: foo

If the value of foo in the source is 'áéí!' then the destination value of bar will be 'aei_'.


process:
  bar:
    plugin: machine_name
    source: foo
    replace_pattern: '/[^a-z0-9_.]+/'

Here the replace pattern does not match the '.' character (as it is included in the list of characters not to match) so if the value of foo in the source is 'áéí!.jpg' then the destination value of bar will be 'aei_.jpg'.

Plugin annotation


@MigrateProcessPlugin(
  id = "machine_name"
)

Hierarchy

Expanded class hierarchy of MachineName

See also

\Drupal\migrate\Plugin\MigrateProcessInterface

1 file declares its use of MachineName
MachineNameTest.php in core/modules/migrate/tests/src/Unit/process/MachineNameTest.php
4 string references to 'MachineName'
BlockTemplateSuggestionsTest::testBlockThemeHookSuggestions in core/modules/block/tests/src/Kernel/BlockTemplateSuggestionsTest.php
Tests template suggestions from block_theme_suggestions_block().
SystemMenuBlockTest::testConfigExpanded in core/modules/system/tests/src/Kernel/Block/SystemMenuBlockTest.php
Tests the config expanded option.
SystemMenuBlockTest::testConfigLevelDepth in core/modules/system/tests/src/Kernel/Block/SystemMenuBlockTest.php
Tests the config start level and depth.
SystemMenuBlockTest::testSystemMenuBlockConfigDependencies in core/modules/system/tests/src/Kernel/Block/SystemMenuBlockTest.php
Tests calculation of a system menu block's configuration dependencies.

File

core/modules/migrate/src/Plugin/migrate/process/MachineName.php, line 65

Namespace

Drupal\migrate\Plugin\migrate\process
View source
class MachineName extends ProcessPluginBase implements ContainerFactoryPluginInterface {
  
  /**
   * The transliteration service.
   *
   * @var \Drupal\Component\Transliteration\TransliterationInterface
   */
  protected $transliteration;
  
  /**
   * The regular expression pattern.
   *
   * @var string
   */
  protected $replacePattern;
  
  /**
   * Constructs a MachineName plugin.
   *
   * @param array $configuration
   *   The plugin configuration.
   * @param string $plugin_id
   *   The plugin ID.
   * @param mixed $plugin_definition
   *   The plugin definition.
   * @param \Drupal\Component\Transliteration\TransliterationInterface $transliteration
   *   The transliteration service.
   */
  public function __construct(array $configuration, $plugin_id, $plugin_definition, TransliterationInterface $transliteration) {
    parent::__construct($configuration, $plugin_id, $plugin_definition);
    $this->transliteration = $transliteration;
    $this->replacePattern = $this->configuration['replace_pattern'] ?? '/[^a-z0-9_]+/';
    if (!is_string($this->replacePattern)) {
      throw new MigrateException('The replace pattern should be a string');
    }
  }
  
  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
    return new static($configuration, $plugin_id, $plugin_definition, $container->get('transliteration'));
  }
  
  /**
   * {@inheritdoc}
   */
  public function transform($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
    $new_value = $this->transliteration
      ->transliterate($value, LanguageInterface::LANGCODE_DEFAULT, '_');
    $new_value = strtolower($new_value);
    $new_value = preg_replace($this->replacePattern, '_', $new_value);
    return preg_replace('/_+/', '_', $new_value);
  }

}

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