class MachineName

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

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

File

core/modules/migrate/src/Plugin/migrate/process/MachineName.php, line 62

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);
    }

}

Members

Title Sort descending Modifiers Object type Summary Overriden Title Overrides
MachineName::$replacePattern protected property The regular expression pattern.
MachineName::$transliteration protected property The transliteration service.
MachineName::create public static function Overrides ContainerFactoryPluginInterface::create
MachineName::transform public function Overrides ProcessPluginBase::transform
MachineName::__construct public function Constructs a MachineName plugin.
PluginInspectionInterface::getPluginDefinition public function Gets the definition of the plugin implementation. 6
PluginInspectionInterface::getPluginId public function Gets the plugin ID of the plugin instance. 2
ProcessPluginBase::$stopPipeline protected property Determines if processing of the pipeline is stopped.
ProcessPluginBase::isPipelineStopped public function Overrides MigrateProcessInterface::isPipelineStopped
ProcessPluginBase::multiple public function Overrides MigrateProcessInterface::multiple 3
ProcessPluginBase::reset public function Overrides MigrateProcessInterface::reset
ProcessPluginBase::stopPipeline protected function Stops pipeline processing after this plugin finishes.

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