function ImageStyleMappings::transform

Overrides ProcessPluginBase::transform

File

core/modules/responsive_image/src/Plugin/migrate/process/ImageStyleMappings.php, line 20

Class

ImageStyleMappings

Transforms image style mappings.

Namespace

Code

public function transform($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
    if (!is_array($value)) {
        throw new MigrateException('Input should be an array');
    }
    [
        $mappings,
        $breakpoint_group,
    ] = $value;
    $new_value = [];
    foreach ($mappings as $mapping_id => $mapping) {
        // The id is in the key with the form
        // "breakpoints.theme.my_theme_id.image_style_machine_name". We want the
        // identifier after the last period.
        preg_match('/\\.([a-z0-9_]+)$/', $mapping_id, $matches);
        foreach ($mapping as $multiplier => $multiplier_settings) {
            if ($multiplier_settings['mapping_type'] == '_none') {
                continue;
            }
            $image_style = [
                'breakpoint_id' => $breakpoint_group . '.' . $matches[1],
                'multiplier' => $multiplier,
                'image_mapping_type' => $multiplier_settings['mapping_type'],
                'image_mapping' => $this->getMultiplierSettings($multiplier_settings),
            ];
            $new_value[] = $image_style;
        }
    }
    return $new_value;
}