Question

I am using Rails 3.2 and the jquery-ui-rails plugin to add the datepicker to my JS manifest file.

This is my manifest file:

//= require jquery_ujs
//= require jquery.ui.datepicker
//= require_tree .

I am getting my jQuery library separately from Google’s CDN.

However, by adding jquery.ui to the manifest file, it automatically includes its jQuery dependency – so now I end up with two jQueries on my final HTML document.

I don’t want this additional jQuery file – I only want the one from Google’s CDN. Using sprockets, I can use the stub directive to selectively ‘exclude’ the jQuery file.

So this what I did – and it doesn’t work – ie jQuery is still added to my final JS file …

//= stub jquery
//= require jquery_ujs
//= require jquery.ui.datepicker
//= require_tree .

I have tried several combinations:

//= stub jquery.js

//= stub "jquery"

//= stub "jquery.js"

//= stub "/jquery.js"

etc …

But none of these work. I haven’t been able to find an example anywhere of how this is supposed to work. Incidentally, I have also tried

//= stub jquery_ujs

Which didn’t stub out the jquery_ujs library either …

Answer 1

I think the reason why it doesn’t work is that Rails 3.2.x only uses sprockets v2.1. Stubs, however, are only available in sprockets >= 2.2. You could try manually updating sprockets (forking actionpack).