Strip invalid nested values from data validated in a form request

RemovesInvalidNestedValues

<?php

namespace App\Http\Requests;

use function array_dot;
use function fnmatch;
use Illuminate\Support\Arr;
use Illuminate\Support\Collection;
use Illuminate\Support\Str;

trait RemovesInvalidNestedValues
{
    /**
     * Get the validated data from the request.
     *
     * @return array
     */
    public function validated()
    {
        $validated = parent::validated();

        return $this->removeInvalidNestedValues($validated);
    }

    /**
     * Remove invalid nested values from the validated.
     *
     * @see https://stackoverflow.com/a/46006808
     * @param array $validated
     * @return array
     */
    private function removeInvalidNestedValues(array $validated)
    {
        $original = array_dot($validated);

        Collection::make($this->rules())
            ->keys()
            ->filter(function ($rule) {
                return Str::contains($rule, '.');
            })->each(function ($rule) use ($original, &$filtered) {
                foreach ($original as $dotIndex => $element) {
                    //fnmatch respects wildcard asterisks
                    if (fnmatch($rule, $dotIndex)) {
                        //array_set respects dot-notation, building out a normal array
                        Arr::set($filtered, $dotIndex, $element);
                    }
                }
            });

        return $filtered;
    }
}