book_admin/application/admin/validate/AdminConfig.php

<?php

namespace app\admin\validate;

use think\Validate;

class AdminConfig extends Validate
{
    /**
     * 验证规则
     */
    protected $rule = [
        'page_sex' => 'require|checkdata',

    ];
    /**
     * 提示消息
     */
    protected $message = [
    ];
    /**
     * 验证场景
     */
    protected $scene = [
        'add' => [],
        'edit' => ['page_sex'],
    ];

    protected function checkdata($value, $rule, $data)
    {

        if ($value == 0) {
            if(empty($data['page_title']['boy_title']) || empty($data['page_title']['girl_title'])){
                return '频道标题不能为空';
            };
        }
        if($value == 1 && empty($data['page_title']['boy_title'])){
            return '男频标题不能为空';
        }
        if($value == 2 && empty($data['page_title']['girl_title'])){
            return '女频标题不能为空';
        }
        return true;
    }

    public function __construct(array $rules = [], $message = [], $field = [])
    {
        $this->field = [
            'page_sex' => __('Title'),
            'checked' => __('Checked'),

        ];
        parent::__construct($rules, $message, $field);
    }

}