function FieldUiTable::reduceOrder

Determines the rendering order of an array representing a tree.

Callback for array_reduce() within ::tablePreRender().

Parameters

mixed $array: Holds the return value of the previous iteration; in the case of the first iteration it instead holds the value of the initial array.

mixed $a: Holds the value of the current iteration.

Return value

array Array where rendering order has been determined.

File

core/modules/field_ui/src/Element/FieldUiTable.php, line 229

Class

FieldUiTable

Provides a field_ui table element.

Namespace

Drupal\field_ui\Element

Code

public static function reduceOrder($array, $a) {
    $array = !$array ? [] : $array;
    if (!empty($a['name'])) {
        $array[] = $a['name'];
    }
    if (!empty($a['children'])) {
        uasort($a['children'], [
            'Drupal\\Component\\Utility\\SortArray',
            'sortByWeightElement',
        ]);
        $array = array_merge($array, array_reduce($a['children'], [
            static::class,
            'reduceOrder',
        ]));
    }
    return $array;
}