function FileWidget::value

Form API callback. Retrieves the value for the file_generic field element.

This method is assigned as a #value_callback in formElement() method.

File

core/modules/file/src/Plugin/Field/FieldWidget/FileWidget.php, line 319

Class

FileWidget

Plugin implementation of the 'file_generic' widget.

Namespace

Code

public static function value($element, $input, FormStateInterface $form_state) {
    if ($input) {
        // Checkboxes lose their value when empty.
        // If the display field is present make sure its unchecked value is saved.
        if (empty($input['display'])) {
            $input['display'] = $element['#display_field'] ? 0 : 1;
        }
    }
    // We depend on the managed file element to handle uploads.
    $return = ManagedFile::valueCallback($element, $input, $form_state);
    // Ensure that all the required properties are returned even if empty.
    $return += [
        'fids' => [],
        'display' => 1,
        'description' => '',
    ];
    return $return;
}