class Explode in Drupal 8

Splits the source string into an array of strings, using a delimiter.

This plugin creates an array of strings by splitting the source parameter on boundaries formed by the delimiter.

Available configuration keys:

• source: The source string.
• limit: (optional)
  • If limit is set and positive, the returned array will contain a maximum of limit elements with the last element containing the rest of string.
  • If limit is set and negative, all components except the last -limit are returned.
  • If the limit parameter is zero, then this is treated as 1.
• delimiter: The boundary string.
• strict: (optional) When this boolean is TRUE, the source should be strictly a string. If FALSE is passed, the source value is casted to a string before being split. Also, in this case, the values casting to empty strings are converted to empty arrays, instead of an array with a single empty string item ['']. Defaults to TRUE.

Example:

process:
  bar:
    plugin: explode
    source: foo
    delimiter: /

If foo is "node/1", then bar will be ['node', '1']. The PHP equivalent of this would be:

$bar = explode('/', $foo);

process:
  bar:
    plugin: explode
    source: foo
    limit: 1
    delimiter: /

If foo is "node/1/edit", then bar will be ['node', '1/edit']. The PHP equivalent of this would be:

$bar = explode('/', $foo, 1);

If the 'strict' configuration is set to FALSE, the input value is casted to a string before being spilt:

process:
  bar:
    plugin: explode
    source: foo
    delimiter: /
    strict: false

If foo is 123 (as integer), then bar will be ['123']. If foo is TRUE, then bar will be ['1']. The PHP equivalent of this would be:

$bar = explode('/', (string) 123);
$bar = explode('/', (string) TRUE);

If the 'strict' configuration is set to FALSE, the source value casting to an empty string are converted to an empty array. For example, with the last configuration, if foo is '', NULL or FALSE, then bar will be [].

Plugin annotation

@MigrateProcessPlugin(
  id = "explode"
)

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\Explode

See also

\Drupal\migrate\Plugin\MigrateProcessInterface

1 file declares its use of Explode

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

File

core/modules/migrate/src/Plugin/migrate/process/Explode.php, line 94

Namespace

Drupal\migrate\Plugin\migrate\process

class Explode extends ProcessPluginBase {

  /**
   * {@inheritdoc}
   */
  public function transform($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
    if (empty($this->configuration['delimiter'])) {
      throw new MigrateException('delimiter is empty');
    }
    $strict = array_key_exists('strict', $this->configuration) ? $this->configuration['strict'] : TRUE;
    if ($strict && !is_string($value)) {
      throw new MigrateException(sprintf('%s is not a string', var_export($value, TRUE)));
    }
    elseif (!$strict) {

      // Check if the incoming value can cast to a string.
      $original = $value;
      if (!is_string($original) && $original != ($value = @strval($value))) {
        throw new MigrateException(sprintf('%s cannot be casted to a string', var_export($original, TRUE)));
      }

      // Empty strings should be exploded to empty arrays.
      if ($value === '') {
        return [];
      }
    }
    $limit = isset($this->configuration['limit']) ? $this->configuration['limit'] : PHP_INT_MAX;
    return explode($this->configuration['delimiter'], $value, $limit);
  }

  /**
   * {@inheritdoc}
   */
  public function multiple() {
    return TRUE;
  }

}

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
Explode::multiple	public	function	Indicates whether the returned value requires multiple handling. Overrides ProcessPluginBase::multiple
Explode::transform	public	function	Performs the associated process. Overrides ProcessPluginBase::transform
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.