weilaibike-api/app/Http/Requests/QuestionRequest.php

<?php
/**
 * Created by PhpStorm.
 * User: Mead
 * Date: 2019/8/5
 * Time: 3:22 PM
 */

namespace App\Http\Requests;

use App\Validators\Rules;

class QuestionRequest extends FormRequest
{
    /**
     * Get the validation rules that apply to the request.
     *
     * @return array
     */
    public function rules()
    {
        return [
            'question' => 'required|string|min:10|max:200',
            'area_id' => Rules::area_id
        ];
    }
}