> For the complete documentation index, see [llms.txt](https://kelby.gitbook.io/rails-beginner-s-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://kelby.gitbook.io/rails-beginner-s-guide/activestorage.md).

# Active Storage 存储功能最小实现

小的应用：

* Model
* View：前端相关 JS
* Controller
* db & migration
* config & routes