ldc-lionor/app/Http/Requests/Bo/ChangeOrderRequest.php

<?php

namespace App\Http\Requests\Bo;

use Illuminate\Foundation\Http\FormRequest;

class ChangeOrderRequest extends FormRequest
{
    /**
     * Determine if the user is authorized to make this request.
     *
     * @return boolean
     */
    public function authorize()
    {
        return auth('backend')->check();
    }

    /**
     * Prepare the data for validation.
     *
     * @return void
     */
    protected function prepareForValidation()
    {
        $this->merge([
            'direction' => $this->direction === 'up' ? true : false
        ]);
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array
     */
    public function rules()
    {
        return [
            'direction' => 'required|boolean',
        ];
    }
}