function FieldDefinition::setDefaultValueCallback

Set the default value callback for the field.

Parameters

string $callback: The default value callback.

Return value

$this

File

core/lib/Drupal/Core/Field/FieldDefinition.php, line 178

Class

FieldDefinition

A class for defining entity field definitions.

Namespace

Drupal\Core\Field

Code

public function setDefaultValueCallback($callback) {
    if (isset($callback) && !is_string($callback)) {
        throw new \InvalidArgumentException('Default value callback must be a string, like "function_name" or "ClassName::methodName"');
    }
    $this->definition['default_value_callback'] = $callback;
    return $this;
}