幻灯位只可在配置文件定义
config/slides.php
```php
return [
1 => [
'id' => 1,
'mark' => 'SLIDES_INDEX',
'name' => '首页幻灯',
'description' => '',
],
2 => [
'id' => 2,
'mark' => 'SLIDES_ABOUT',
'name' => '关于我们幻灯',
'description' => '',
],
];
```
