public function MapDataDefinition::getMainPropertyName
public MapDataDefinition::getMainPropertyName()
Returns the name of the main property, if any.
Some field items consist mainly of one main property, e.g. the value of a text field or the
target_id
of an entity reference. If the field item has no main property, the method returns NULL.
Return value
string|null The name of the value property, or NULL if there is none.
Overrides ComplexDataDefinitionBase::getMainPropertyName
File
- core/lib/Drupal/Core/TypedData/MapDataDefinition.php, line 70
Class
- MapDataDefinition
- A typed data definition class for defining maps.
Namespace
Drupal\Core\TypedDataCode
public function getMainPropertyName() { return $this->mainPropertyName; }
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https://api.drupal.org/api/drupal/core!lib!Drupal!Core!TypedData!MapDataDefinition.php/function/MapDataDefinition::getMainPropertyName/8.1.x