crm/app/sys/validate/SmartScreen.php

<?php

namespace app\sys\validate;

use think\Validate;

class SmartScreen extends Validate
{
    // 验证规则
    protected $rule = [
        'title' => 'require',
        'background_img' => 'require',
        'lcon_img' => 'require'
    ];

    // 验证消息
    protected $message  =   [
        'title.require' => '请输入名称',
        'background_img.require' => '请选择背景图',
        'lcon_img.require' => '请选择logo',
    ];

    // 验证场景
    protected $scene = [
        // 'saveModularRead'  =>  ['title', 'background_img', 'lcon_img']
    ];
}