test/app/Http/Requests/Link/LinkCountSaveRequest.php

<?php

namespace App\Http\Requests\Link;

use App\Http\Requests\Request;
use Illuminate\Validation\Rule;
use Illuminate\Database\Query\Builder;

class LinkCountSaveRequest extends Request
{
    /**
     * Determine if the user is authorized to make this request.
     *
     * @return bool
     */
    public function authorize()
    {
        return true;
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array
     */
    public function rules()
    {
        if (!$this->ajax()) {
            return [];
        }

        return [
            'link_id' => 'required',
            'username' => 'required',
            'password' => 'required',
            'email' => 'nullable',
            'url' => 'required',
            'created_at' => 'nullable'
//            'redundant_site_id' => 'required'
        ];
    }

    public function attributes()
    {
        return [
            'link_id' => '外链类型',
            'url' => '演示地址',
            'username' => '用户名',
            'password' => '密码',
            'email' => '邮箱',
//            'redundant_site_id' => '站点'
        ];
    }
}