class Transpose in Migrate Plus 8.5

Exchange rows and columns.

Examples:


process:
  bar:
    -
      plugin: transpose
      source:
        - foo0
        - foo1
        - foo2

This will create an array of 3-element, numerically indexed arrays. Each array will have one element from each of the source properties.


process:
  field_link:
    -
      plugin: transpose
      source:
        - link_url
        - link_text
    -
      plugin: sub_process
      process:
        uri:
          -
            plugin: extract
            source:
              - 0
            index:
              - 0
          -
            plugin: link_uri
            validate_route: false
        title:
          -
            plugin: extract
            source:
              - 1
            index:
              - 0

Suppose the source property link_url has the URL for three links, and the source property link_text has the corresponding link text: [url0, url1, url2] and [text0, text1, text2]. Then the transpose plugin produces [[url0, text0], [url1, text1], [url2, text2]]. Inside sub_process, the extract plugin in this example takes each [url, text] subarray and assigns uri: url, title: text.

Plugin annotation


@MigrateProcessPlugin(
  id = "transpose"
)

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_plus\Plugin\migrate\process\Transpose

Expanded class hierarchy of Transpose

1 file declares its use of Transpose

TransposeTest.php in tests/src/Unit/process/TransposeTest.php

File

src/Plugin/migrate/process/Transpose.php, line 70

Namespace

Drupal\migrate_plus\Plugin\migrate\process

View source

class Transpose extends ProcessPluginBase {

  /**
   * {@inheritdoc}
   */
  public function transform($table, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {

    // Make sure that $table is an array of arrays.
    if (!is_array($table) || $table == []) {
      return [];
    }
    foreach ($table as &$value) {
      $value = (array) $value;
    }

    // @see https://stackoverflow.com/a/47718734/3130080
    return array_map(NULL, ...$table);
  }

}

Members

Name	Modifiers	Type	Description	Overrides
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
ProcessPluginBase::multiple	public	function	Indicates whether the returned value requires multiple handling. Overrides MigrateProcessInterface::multiple	3
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.
Transpose::transform	public	function	Performs the associated process. Overrides ProcessPluginBase::transform

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