function PlaceBlock::apply

Overrides ConfigActionPluginInterface::apply

File

core/modules/block/src/Plugin/ConfigAction/PlaceBlock.php, line 54

Class

PlaceBlock

Places a block in either the admin or default theme.

Namespace

Code

public function apply(string $configName, mixed $value) : void {
    assert(is_array($value));
    $theme = $this->configFactory
        ->get('system.theme')
        ->get($this->whichTheme);
    $value['theme'] = $theme;
    if (array_key_exists('region', $value) && is_array($value['region'])) {
        // Since the recipe author might not know ahead of time what theme the
        // block is in, they should supply a map whose keys are theme names and
        // values are region names, so we know where to place this block. If the
        // target theme is not in the map, they should supply the name of a
        // fallback region. If all that fails, give up with an exception.
        $value['region'] = $value['region'][$theme] ?? $value['default_region'] ?? throw new ConfigActionException("Cannot determine which region to place this block into, because no default region was provided.");
    }
    // Allow the recipe author to position the block in the region without
    // needing to know exact weights.
    if (array_key_exists('position', $value)) {
        $blocks = $this->blockStorage
            ->loadByProperties([
            'theme' => $theme,
            'region' => $value['region'],
        ]);
        if ($blocks) {
            // Sort the blocks by weight. Don't use \Drupal\block\Entity\Block::sort()
            // here because it seems to be intended to sort blocks in the UI, where
            // we really just want to get the weights right in this situation.
            uasort($blocks, fn(BlockInterface $a, BlockInterface $b) => $a->getWeight() <=> $b->getWeight());
            $value['weight'] = match ($value['position']) {    'first' => reset($blocks)->getWeight() - 1,
                'last' => end($blocks)->getWeight() + 1,
            
            };
        }
    }
    // Remove values that are not valid properties of block entities.
    unset($value['position'], $value['default_region']);
    // Ensure a weight is set by default.
    $value += [
        'weight' => 0,
    ];
    $this->createAction
        ->apply($configName, $value);
}