action_controller_overview.html#routing-parameters

In this guide, you will learn how controllers work and how they fit into the request cycle in your application. After reading this guide, you will know how to: Follow the flow of a request through a controller. Access parameters passed to your controller. Use Strong Parameters and permit values. Store data in the cookie, the session, and the flash. Work with action callbacks to execute code during

[iR3]

Railsで RESTful Downloads するには MIME定義をしておかないと Rails4では怒られる

[katsyoshi]

へー

[takaesu]

フィルタをクラスに分けて定義する

[sessan]

railsのコントローラでファイルをストリーミングダウンロードさせるやり方。公式資料。