class Variable in Drupal 10
Same name in this branch
- 10 core/lib/Drupal/Component/Utility/Variable.php \Drupal\Component\Utility\Variable
- 10 core/modules/migrate_drupal/src/Plugin/migrate/source/Variable.php \Drupal\migrate_drupal\Plugin\migrate\source\Variable
Same name and namespace in other branches
- 8 core/modules/migrate_drupal/src/Plugin/migrate/source/Variable.php \Drupal\migrate_drupal\Plugin\migrate\source\Variable
- 9 core/modules/migrate_drupal/src/Plugin/migrate/source/Variable.php \Drupal\migrate_drupal\Plugin\migrate\source\Variable
Drupal 6/7 variable source from database.
This source class fetches variables from the source Drupal database. Depending on the configuration, this returns zero or a single row and as such is not a good example for any normal source class returning multiple rows.
Available configuration keys (one of which must be defined):
- variables: (optional) The list of variables to retrieve from the source database. Specified variables are retrieved in a single row.
- variables_no_row_if_missing: (optional) The list of variables to retrieve from the source database. If any of the variables listed here are missing in the source, then the source will return zero rows.
Examples:
With this configuration, the source will return one row even when the "filter_fallback_format" variable isn't available:
source:
plugin: variable
variables:
- filter_fallback_format
With this configuration, the source will return one row if the variable is available, and zero if it isn't:
source:
plugin: variable
variables_no_row_if_missing:
- filter_fallback_format
The variables and the variables_no_row_if_missing lists are always merged together. All of the following configurations are valid:
source:
plugin: variable
variables:
- book_child_type
- book_block_mode
- book_allowed_types
variables_no_row_if_missing:
- book_child_type
- book_block_mode
- book_allowed_types
source:
plugin: variable
variables:
- book_child_type
- book_block_mode
variables_no_row_if_missing:
- book_allowed_types
source:
plugin: variable
variables_no_row_if_missing:
- book_child_type
- book_block_mode
- book_allowed_types
For additional configuration keys, refer to the parent classes.
Plugin annotation
@MigrateSource(
id = "variable",
source_module = "system",
)
Hierarchy
- class \Drupal\Component\Plugin\PluginBase implements DerivativeInspectionInterface, PluginInspectionInterface
- class \Drupal\Core\Plugin\PluginBase uses DependencySerializationTrait, MessengerTrait, StringTranslationTrait
- class \Drupal\migrate\Plugin\migrate\source\SourcePluginBase implements RollbackAwareInterface, MigrateSourceInterface
- class \Drupal\migrate\Plugin\migrate\source\SqlBase implements ContainerFactoryPluginInterface, RequirementsInterface
- class \Drupal\migrate_drupal\Plugin\migrate\source\DrupalSqlBase implements DependentPluginInterface uses DependencyTrait
- class \Drupal\migrate_drupal\Plugin\migrate\source\Variable
- class \Drupal\migrate_drupal\Plugin\migrate\source\DrupalSqlBase implements DependentPluginInterface uses DependencyTrait
- class \Drupal\migrate\Plugin\migrate\source\SqlBase implements ContainerFactoryPluginInterface, RequirementsInterface
- class \Drupal\migrate\Plugin\migrate\source\SourcePluginBase implements RollbackAwareInterface, MigrateSourceInterface
- class \Drupal\Core\Plugin\PluginBase uses DependencySerializationTrait, MessengerTrait, StringTranslationTrait
Expanded class hierarchy of Variable
See also
\Drupal\migrate\Plugin\migrate\source\SqlBase
\Drupal\migrate\Plugin\migrate\source\SourcePluginBase
4 files declare their use of Variable
- ContactSettings.php in core/
modules/ contact/ src/ Plugin/ migrate/ source/ ContactSettings.php - SearchPage.php in core/
modules/ search/ src/ Plugin/ migrate/ source/ d6/ SearchPage.php - SearchPage.php in core/
modules/ search/ src/ Plugin/ migrate/ source/ d7/ SearchPage.php - UpdateSettings.php in core/
modules/ update/ src/ Plugin/ migrate/ source/ UpdateSettings.php
4 string references to 'Variable'
- MultilingualReviewPageTest::getMissingPaths in core/
modules/ migrate_drupal_ui/ tests/ src/ Functional/ d7/ MultilingualReviewPageTest.php - NoMultilingualReviewPageTest::getMissingPaths in core/
modules/ migrate_drupal_ui/ tests/ src/ Functional/ d7/ NoMultilingualReviewPageTest.php - update.source.schema.yml in core/
modules/ update/ config/ schema/ update.source.schema.yml - core/modules/update/config/schema/update.source.schema.yml
- Upgrade7Test::getMissingPaths in core/
modules/ migrate_drupal_ui/ tests/ src/ Functional/ d7/ Upgrade7Test.php
File
- core/
modules/ migrate_drupal/ src/ Plugin/ migrate/ source/ Variable.php, line 83
Namespace
Drupal\migrate_drupal\Plugin\migrate\sourceView source
class Variable extends DrupalSqlBase {
/**
* The variable names to fetch.
*
* @var array
*/
protected $variables;
/**
* The variables that result in no row if any are missing from the source.
*
* @var array
*/
protected $variablesNoRowIfMissing;
/**
* {@inheritdoc}
*/
public function __construct(array $configuration, $plugin_id, $plugin_definition, MigrationInterface $migration, StateInterface $state, EntityTypeManagerInterface $entity_type_manager) {
parent::__construct($configuration, $plugin_id, $plugin_definition, $migration, $state, $entity_type_manager);
$this->variablesNoRowIfMissing = $this->configuration['variables_no_row_if_missing'] ?? [];
$variables = $this->configuration['variables'] ?? [];
$this->variables = array_unique(array_merge(array_values($variables), array_values($this->variablesNoRowIfMissing)));
}
/**
* {@inheritdoc}
*/
protected function initializeIterator() {
if ($this
->count()) {
return new \ArrayIterator([
$this
->values(),
]);
}
return new \ArrayIterator();
}
/**
* Return the values of the variables specified in the plugin configuration.
*
* @return array
* An associative array where the keys are the variables specified in the
* plugin configuration and the values are the values found in the source.
* Only those values are returned that are actually in the database.
*/
protected function values() {
// Create an ID field so we can record migration in the map table.
// Arbitrarily, use the first variable name.
$values['id'] = reset($this->variables);
return $values + array_map('unserialize', $this
->prepareQuery()
->execute()
->fetchAllKeyed());
}
/**
* {@inheritdoc}
*/
protected function doCount() {
if (empty($this->variablesNoRowIfMissing)) {
return 1;
}
$variable_names = array_keys($this
->query()
->execute()
->fetchAllAssoc('name'));
if (!empty(array_diff($this->variablesNoRowIfMissing, $variable_names))) {
return 0;
}
return 1;
}
/**
* {@inheritdoc}
*/
public function fields() {
return array_combine($this->variables, $this->variables);
}
/**
* {@inheritdoc}
*/
public function query() {
return $this
->getDatabase()
->select('variable', 'v')
->fields('v', [
'name',
'value',
])
->condition('name', $this->variables, 'IN');
}
/**
* {@inheritdoc}
*/
public function getIds() {
$ids['id']['type'] = 'string';
return $ids;
}
}
Members
Name | Modifiers | Type | Description | Overrides |
---|---|---|---|---|
DependencySerializationTrait:: |
protected | property | ||
DependencySerializationTrait:: |
protected | property | ||
DependencySerializationTrait:: |
public | function | 2 | |
DependencyTrait:: |
protected | property | The object's dependencies. | |
DependencyTrait:: |
protected | function | Adds multiple dependencies. | |
DependencyTrait:: |
protected | function | Adds a dependency. | |
DrupalSqlBase:: |
protected | property | The entity type manager. | |
DrupalSqlBase:: |
protected | property | If the source provider is missing. | |
DrupalSqlBase:: |
protected | property | The contents of the system table. | |
DrupalSqlBase:: |
public | function |
Calculates dependencies for the configured plugin. Overrides DependentPluginInterface:: |
|
DrupalSqlBase:: |
public | function |
Checks if requirements for this plugin are OK. Overrides SqlBase:: |
4 |
DrupalSqlBase:: |
public static | function |
Creates an instance of the plugin. Overrides SqlBase:: |
2 |
DrupalSqlBase:: |
protected | function | Retrieves a module schema_version from the source Drupal database. | |
DrupalSqlBase:: |
public | function | Retrieves all system data information from the source Drupal database. | |
DrupalSqlBase:: |
protected | function | Checks if a given module is enabled in the source Drupal database. | |
DrupalSqlBase:: |
protected | function | Reads a variable from a source Drupal database. | |
MessengerTrait:: |
protected | property | The messenger. | 18 |
MessengerTrait:: |
public | function | Gets the messenger. | 18 |
MessengerTrait:: |
public | function | Sets the messenger. | |
MigrateSourceInterface:: |
constant | Indicates that the source is not countable. | ||
PluginBase:: |
protected | property | Configuration information passed into the plugin. | 1 |
PluginBase:: |
protected | property | The plugin implementation definition. | |
PluginBase:: |
protected | property | The plugin_id. | |
PluginBase:: |
constant | A string which is used to separate base plugin IDs from the derivative ID. | ||
PluginBase:: |
public | function | ||
PluginBase:: |
public | function | ||
PluginBase:: |
public | function | 2 | |
PluginBase:: |
public | function | ||
PluginBase:: |
public | function | Determines if the plugin is configurable. | |
SourcePluginBase:: |
protected | property | The backend cache. | |
SourcePluginBase:: |
protected | property | Whether this instance should cache the source count. | 1 |
SourcePluginBase:: |
protected | property | Key to use for caching counts. | |
SourcePluginBase:: |
protected | property | The current row from the query. | |
SourcePluginBase:: |
protected | property | The primary key of the current row. | |
SourcePluginBase:: |
protected | property | Information on the property used as the high-water mark. | |
SourcePluginBase:: |
protected | property | The key-value storage for the high-water value. | |
SourcePluginBase:: |
protected | property | The migration ID map. | |
SourcePluginBase:: |
protected | property | The iterator to iterate over the source rows. | |
SourcePluginBase:: |
protected | property | Flags whether source plugin will read the map row and add to data row. | |
SourcePluginBase:: |
protected | property | The entity migration object. | |
SourcePluginBase:: |
protected | property | The module handler service. | 2 |
SourcePluginBase:: |
protected | property | The high water mark at the beginning of the import operation. | |
SourcePluginBase:: |
protected | property | Whether this instance should not attempt to count the source. | 1 |
SourcePluginBase:: |
protected | property | Flags whether to track changes to incoming data. | 1 |
SourcePluginBase:: |
protected | function | Check if the incoming data is newer than what we've previously imported. | |
SourcePluginBase:: |
public | function | 2 | |
SourcePluginBase:: |
public | function | ||
SourcePluginBase:: |
protected | function | Gets the cache object. | |
SourcePluginBase:: |
public | function | Gets the currentSourceIds data member. | |
SourcePluginBase:: |
protected | function | The current value of the high water mark. | |
SourcePluginBase:: |
protected | function | Get the name of the field used as the high watermark. | |
SourcePluginBase:: |
protected | function | Get information on the property used as the high watermark. | |
SourcePluginBase:: |
protected | function | Get the high water storage object. | |
SourcePluginBase:: |
protected | function | Returns the iterator that will yield the row arrays to be processed. | |
SourcePluginBase:: |
protected | function | Gets the module handler. | |
SourcePluginBase:: |
public | function |
Gets the source module providing the source data. Overrides MigrateSourceInterface:: |
|
SourcePluginBase:: |
public | function | ||
SourcePluginBase:: |
public | function | ||
SourcePluginBase:: |
public | function |
Performs post-rollback tasks. Overrides RollbackAwareInterface:: |
|
SourcePluginBase:: |
public | function |
Adds additional data to the row. Overrides MigrateSourceInterface:: |
50 |
SourcePluginBase:: |
public | function |
Performs pre-rollback tasks. Overrides RollbackAwareInterface:: |
|
SourcePluginBase:: |
public | function | ||
SourcePluginBase:: |
protected | function | Checks if the incoming row has changed since our last import. | |
SourcePluginBase:: |
protected | function | Save the new high water mark. | |
SourcePluginBase:: |
public | function | ||
SqlBase:: |
protected | property | The count of the number of batches run. | |
SqlBase:: |
protected | property | Number of records to fetch from the database during each batch. | |
SqlBase:: |
protected | property | The database object. | 1 |
SqlBase:: |
protected | property | The query string. | 82 |
SqlBase:: |
protected | property | State service for retrieving database info. | |
SqlBase:: |
protected | function | Prepares query for the next set of data from the source database. | |
SqlBase:: |
protected | function |
Position the iterator to the following row. Overrides SourcePluginBase:: |
|
SqlBase:: |
public | function | Gets the database connection object. | 2 |
SqlBase:: |
protected | function | Checks if we can join against the map table. | 1 |
SqlBase:: |
protected | function | Adds tags and metadata to the query. | |
SqlBase:: |
protected | function | Wrapper for database select. | |
SqlBase:: |
protected | function | Gets a connection to the referenced database. | |
SqlBase:: |
public | function |
Overrides DependencySerializationTrait:: |
|
SqlBase:: |
public | function |
Prints the query string when the object is used as a string. Overrides MigrateSourceInterface:: |
|
StringTranslationTrait:: |
protected | property | The string translation service. | 3 |
StringTranslationTrait:: |
protected | function | Formats a string containing a count of items. | |
StringTranslationTrait:: |
protected | function | Returns the number of plurals supported by a given language. | |
StringTranslationTrait:: |
protected | function | Gets the string translation service. | |
StringTranslationTrait:: |
public | function | Sets the string translation service to use. | 1 |
StringTranslationTrait:: |
protected | function | Translates a string to the current language or to a given language. | |
Variable:: |
protected | property | The variable names to fetch. | |
Variable:: |
protected | property | The variables that result in no row if any are missing from the source. | |
Variable:: |
protected | function |
Gets the source count using countQuery(). Overrides SqlBase:: |
1 |
Variable:: |
public | function |
Returns available fields on the source. Overrides MigrateSourceInterface:: |
2 |
Variable:: |
public | function |
Defines the source fields uniquely identifying a source row. Overrides MigrateSourceInterface:: |
2 |
Variable:: |
protected | function |
Initializes the iterator with the source data. Overrides SqlBase:: |
2 |
Variable:: |
public | function |
Overrides SqlBase:: |
|
Variable:: |
protected | function | Return the values of the variables specified in the plugin configuration. | 3 |
Variable:: |
public | function |
Constructs a \Drupal\Component\Plugin\PluginBase object. Overrides DrupalSqlBase:: |