manabou https://blog.hatena.ne.jp/manabou/ manabouのログ https://manabou.hatenadiary.org/ コントローラーの中の適当なとこ def aaa @headers["Content-Type"] = "text/xml ;charset=utf-8"; a = ""; a = a + "<response>" a = a + "hello world" a = a + "</response>" render_text a end def bbb render_text "hello world" endこんなかんじかな Setting the request content type in Rails | mentalized http://mentalized.net/journal/… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmanabou.hatenadiary.org%2Fentry%2F20060108%2F1136751210" title="Ruby on Railsで任意のヘッダーを返す - manabouのログ" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2006-01-08 05:13:30 rich https://manabou.hatenadiary.org/entry/20060108/1136751210 1.0 100%