Laravel Nova: Check if filter is active

nova-check-if-filter-is-active.php

<?php // Functions
if (!function_exists('decodeNovaFilter')) {
    /**
     * Decode the filter string from base64 encoding.
     *
     * @param string $filtersRequestString
     * @return array
     */
    function decodeNovaFilter(string $filtersRequestString): array
    {
        if (empty($filtersRequestString)) {
            return [];
        }

        $filters = json_decode(base64_decode($filtersRequestString), true);

        return is_array($filters) ? $filters : [];
    }
}

if (!function_exists('isNovaFilterActive')) {
    function isNovaFilterActive($model, string $filtersRequest): bool
    {
        $filters = decodeNovaFilter($filtersRequest);

        $check = array_filter($filters, function ($value) use ($model) {
            return isset($value['class']) && isset($value['value']) && $value['class'] = $model && $value['value'] != null;
        });

        return !empty($check);
    }
}
?>
 
<?php // Example Resource
    public static function indexQuery(NovaRequest $request, $query): Builder
    {
        if (!isNovaFilterActive(Status::class, $request->input('filters'))) {
            $query->where('status', '!=', static::$model::STATUS_CLOSED);
        }

        return $query;
    }