class Get in Drupal 10

Gets the source value.

Available configuration keys:

• source: Source property.

The get plugin returns the value of the property given by the "source" configuration key.

Examples:

process:
  bar:
    plugin: get
    source: foo

This copies the source value of foo to the destination property "bar".

Since get is the default process plugin, it can be shorthanded like this:

process:
bar:
foo;

Get also supports a list of source properties.

Example:

process:
  bar:
    plugin: get
    source:
      - foo1
      - foo2

This copies the array of source values [foo1, foo2] to the destination property "bar".

If the list of source properties contains an empty element then the current value will be used. This makes it impossible to reach a source property with an empty string as its name.

Get also supports copying destination values. These are indicated by a starting @ sign. Values using @ must be wrapped in quotes.

process:
  foo:
    plugin: machine_name
    source: baz
  bar:
    plugin: get
    source: '@foo'

This will simply copy the destination value of foo to the destination property bar. foo configuration is included for illustration purposes.

Because of this, if the source or destination property actually starts with a "@", that character must be escaped with "@@". The referenced property becomes, for example, "@@@foo".

process:
  '@foo':
    plugin: machine_name
    source: baz
  bar:
    plugin: get
    source: '@@@foo'

This should occur extremely rarely.

Plugin annotation

@MigrateProcessPlugin(
  id = "get",
  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\Plugin\migrate\process\Get

See also

\Drupal\migrate\Plugin\MigrateProcessInterface

1 file declares its use of Get

GetTest.php in core/modules/migrate/tests/src/Unit/process/GetTest.php

File

core/modules/migrate/src/Plugin/migrate/process/Get.php, line 95

Namespace

Drupal\migrate\Plugin\migrate\process

class Get extends ProcessPluginBase {

  /**
   * Flag indicating whether there are multiple values.
   *
   * @var bool
   */
  protected $multiple;

  /**
   * {@inheritdoc}
   */
  public function transform($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
    $source = $this->configuration['source'];
    $properties = is_string($source) ? [
      $source,
    ] : $source;
    $return = [];
    foreach ($properties as $property) {
      if ($property || (string) $property === '0') {
        $return[] = $row
          ->get($property);
      }
      else {
        $return[] = $value;
      }
    }
    if (is_string($source)) {
      $this->multiple = is_array($return[0]);
      return $return[0];
    }
    return $return;
  }

  /**
   * {@inheritdoc}
   */
  public function multiple() {
    return $this->multiple;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
DependencySerializationTrait::$_entityStorages	protected	property
DependencySerializationTrait::$_serviceIds	protected	property
DependencySerializationTrait::__sleep	public	function		2
DependencySerializationTrait::__wakeup	public	function		2
Get::$multiple	protected	property	Flag indicating whether there are multiple values.
Get::multiple	public	function	Indicates whether the returned value requires multiple handling. Overrides ProcessPluginBase::multiple
Get::transform	public	function	Performs the associated process. Overrides ProcessPluginBase::transform
MessengerTrait::$messenger	protected	property	The messenger.	18
MessengerTrait::messenger	public	function	Gets the messenger.	18
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.
PluginBase::$pluginId	protected	property	The plugin_id.
PluginBase::DERIVATIVE_SEPARATOR		constant	A string which is used to separate base plugin IDs from the derivative ID.
PluginBase::getBaseId	public	function
PluginBase::getDerivativeId	public	function
PluginBase::getPluginDefinition	public	function		2
PluginBase::getPluginId	public	function
PluginBase::isConfigurable	public	function	Determines if the plugin is configurable.
PluginBase::__construct	public	function	Constructs a \Drupal\Component\Plugin\PluginBase object.	53
StringTranslationTrait::$stringTranslation	protected	property	The string translation service.	3
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.	1
StringTranslationTrait::t	protected	function	Translates a string to the current language or to a given language.