ldc-groupe/app/Http/Requests/Front/Search/SearchRequest.php

<?php

namespace App\Http\Requests\Front\Search;

use Illuminate\Foundation\Http\FormRequest;

class SearchRequest extends FormRequest
{
    /**
     * Prepare the data for validation.
     *
     * @return void
     */
    protected function prepareForValidation(): void
    {
        $this->merge(['page' => (int) $this->page ?: 1]);
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array<string, \Illuminate\Contracts\Validation\ValidationRule|array<mixed>|string>
     */
    public function rules(): array
    {
        $queryKey = trans('front.search.query');
        $pageKey  = trans('front.search.page');

        return [
            $queryKey => 'required|string|between:3,255',
            $pageKey  => 'required|integer|min:1',
        ];
    }
}