ldc-doux/app/Http/Requests/StoreSliderRequest.php

<?php

namespace App\Http\Requests;

use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Support\Str;

class StoreSliderRequest extends FormRequest
{
    /**
     * Determine if the user is authorized to make this request.
     *
     * @return boolean
     */
    public function authorize()
    {
        $this->merge([
            'slug' => Str::slug($this->label),
            'published' => $this->published ? true : false
        ]);

        return auth()->check();
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array
     */
    public function rules()
    {
        return [
            'label' => 'required|string|max:255',
            'slug' => 'required|unique:sliders',
            'commentaire' => 'sometimes|max:255',
            'published' => 'required|boolean',
        ];
    }

    /**
     * Get custom messages for validator errors.
     *
     * @return array
     */
    public function messages()
    {
        return [];
    }

    /**
     * Get custom attributes for validator errors.
     *
     * @return array
     */
    public function attributes()
    {
        return [
            'slug' => trans('label')
        ];
    }
}