function ResourceTypeField::hasOne

Whether the field can only have one value.

Return value

bool TRUE if the field can have only one value, FALSE otherwise.

File

core/modules/jsonapi/src/ResourceType/ResourceTypeField.php, line 125

Class

ResourceTypeField

Abstract value object containing all metadata for a JSON:API resource field.

Namespace

Code

public function hasOne() {
    return $this->hasOne;
}