class Debug in Migrate Devel 8

Debug the process pipeline.

Prints the input value, assuming that you are running the migration from the command line, and sends it to the next step in the pipeline unaltered.

Available configuration keys:

• label: (optional) a string to print before the debug output. Include any trailing punctuation or space characters.
• multiple: (optional) set to TRUE to ask the next step in the process pipeline to process array values individually, like the multiple_values plugin from the Migrate Plus module.

Examples:

process:
  field_tricky:
    -
      plugin: debug
      source: whatever
    -
      plugin: next

This will print the source before passing it to the next plugin.

process:
  field_tricky:
    -
      plugin: debug
      source: whatever
      label: 'Step 1: '
      multiple: true
    -
      plugin: next

This does the same thing, but ensures that the next plugin will be called once for each item in the source, if the source is an array. It will also print "Debug Step 1: " before printing the source.

Plugin annotation

@MigrateProcessPlugin(
  id = "debug",
  handle_multiples = TRUE
)

Hierarchy

• class \Drupal\Component\Plugin\PluginBase implements DerivativeInspectionInterface, PluginInspectionInterface
  • class \Drupal\Core\Plugin\PluginBase uses DependencySerializationTrait, MessengerTrait, StringTranslationTrait
    • class \Drupal\migrate\ProcessPluginBase implements MigrateProcessInterface
      • class \Drupal\migrate_devel\Plugin\migrate\process\Debug

See also

\Drupal\migrate\Plugin\MigrateProcessInterface

File

src/Plugin/migrate/process/Debug.php, line 59

Namespace

Drupal\migrate_devel\Plugin\migrate\process

class Debug extends ProcessPluginBase {

  /**
   * {@inheritdoc}
   */
  public function transform($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
    if (isset($this->configuration['label'])) {
      print_r($this->configuration['label']);
    }
    print_r($value);
    if (!is_array($value)) {
      print_r(PHP_EOL);
    }
    return $value;
  }

  /**
   * {@inheritdoc}
   */
  public function multiple() {
    return !empty($this->configuration['multiple']);
  }

}

Members

Name	Modifiers	Type	Description	Overrides
Debug::multiple	public	function	Indicates whether the returned value requires multiple handling. Overrides ProcessPluginBase::multiple
Debug::transform	public	function	Performs the associated process. Overrides ProcessPluginBase::transform
DependencySerializationTrait::$_entityStorages	protected	property	An array of entity type IDs keyed by the property name of their storages.
DependencySerializationTrait::$_serviceIds	protected	property	An array of service IDs keyed by property name used for serialization.
DependencySerializationTrait::__sleep	public	function		1
DependencySerializationTrait::__wakeup	public	function		2
MessengerTrait::$messenger	protected	property	The messenger.	29
MessengerTrait::messenger	public	function	Gets the messenger.	29
MessengerTrait::setMessenger	public	function	Sets the messenger.
PluginBase::$configuration	protected	property	Configuration information passed into the plugin.	1
PluginBase::$pluginDefinition	protected	property	The plugin implementation definition.	1
PluginBase::$pluginId	protected	property	The plugin_id.
PluginBase::DERIVATIVE_SEPARATOR		constant	A string which is used to separate base plugin IDs from the derivative ID.
PluginBase::getBaseId	public	function	Gets the base_plugin_id of the plugin instance. Overrides DerivativeInspectionInterface::getBaseId
PluginBase::getDerivativeId	public	function	Gets the derivative_id of the plugin instance. Overrides DerivativeInspectionInterface::getDerivativeId
PluginBase::getPluginDefinition	public	function	Gets the definition of the plugin implementation. Overrides PluginInspectionInterface::getPluginDefinition	3
PluginBase::getPluginId	public	function	Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface::getPluginId
PluginBase::isConfigurable	public	function	Determines if the plugin is configurable.
PluginBase::__construct	public	function	Constructs a \Drupal\Component\Plugin\PluginBase object.	92
StringTranslationTrait::$stringTranslation	protected	property	The string translation service.	1
StringTranslationTrait::formatPlural	protected	function	Formats a string containing a count of items.
StringTranslationTrait::getNumberOfPlurals	protected	function	Returns the number of plurals supported by a given language.
StringTranslationTrait::getStringTranslation	protected	function	Gets the string translation service.
StringTranslationTrait::setStringTranslation	public	function	Sets the string translation service to use.	2
StringTranslationTrait::t	protected	function	Translates a string to the current language or to a given language.