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If you are looking to use Bootstrap 3 with Rails, then this article is for you. It provides a guide to adding Bootstrap 3, aka Twitter Bootstrap 3, to a new Rails 4 project. I found  from , however I’ve deviated slightly from his implementation and I decided to document it.

Let’s start by creating a new project:

rails new bootstrap

Next, we need  and you can download the latest version . At the time this article was written, the latest Bootstrap release was v3.0.2.

I’m only interested in using the minimized Bootstrap files. We need to copy a number of files into our project from the Bootstrap download:

1. Copy bootstrap.min.css to the /vendor/assets/stylesheets directory
2. Copy bootstrap.min.js to the /vendor/assets/javascripts directory
3. Copy the fonts directory and its contents to /vendor/assets/

Now that the files have been added to your project. We need to tell the application to use them.

Edit app/assets/stylesheets/application.css and add *= require bootstrap.min along with some @font-face overrides which change the path to the glyphicons. We’ll do that here to avoid changing the bootstrap files.

*= require bootstrap.min *= require_self *= require_tree . */@font-face {  font-family: 'Glyphicons Halflings';  src: url('../assets/glyphicons-halflings-regular.eot');  src: url('../assets/glyphicons-halflings-regular.eot?#iefix') format('embedded-opentype'),        url('../assets/glyphicons-halflings-regular.woff') format('woff'),        url('../assets/glyphicons-halflings-regular.ttf') format('truetype'),        url('../assets/glyphicons-halflings-regular.svg#glyphicons_halflingsregular') format('svg');}

Next, we need to edit app/assets/javascripts/application.js and add//= require bootstrap.min. Here’s a look at mine:

//= require jquery//= require jquery_ujs//= require bootstrap.min//= require turbolinks//= require_tree .

That is all it takes to add  to your rails application without a gem. There is also a sample application on Github, you can .

I also recently published a new article that builds on this project. In it, I show you how to build the  in Rails. .

If you have any suggestions or feedback, please let me know in the comments, via  or on.