Ruby on Rails: How to render file as plain text (without any HTML)

How do you render file as a plain/text in rails (without rendering any HTML)? I've tried: ``` render file: "path/to/file", layout: false ``` and ``` render file: "path/to/file", content_type: 'text/plain' ``` also both ``` render file: "path/to/file", layout: false, content_type: 'text/plain' ``` But there still some html on the response. I'm using rails 3.2.14 and ruby 1.9.3 Thanks in advance. EDIT 1: Silly me, this actually works: ``` render file: "path/to/file", layout: false, content_type: 'text/plain' ``` I was inspecting the element using google chrome, so there's an html tag appears. But when I see the source, there's no HTML tag. The file I was trying to render is a custom made file without extension, it is a tab separated value I use as a parameter in d3.tsv() (D3.js) Thank you all for your efforts. :D EDIT 2: In Edit 1, I checked the response and it's true that it doesn't come with any html tag. But using it as parameter in d3.tsv() (D3.js) doesn't work apparently. Glad I tried the answer from JetAbe and it works! So I accepted JetAbe's answer.