Ruby on Rails: “couldn't find file 'jquery-ui'”

Question

I\'ve just done a fresh install and was able to access the default rails page at localhost:3000, but when I installed the activeadmin gem I had a problem when accessing /admin/

Answer 1

If you are using later versions of jquery-ui-rails in my case jquery-ui-rails-5.0.0

I found out in the jquery-ui-rails-5.0.0 assets folder, that writing the following line into your application.css:

*= require jquery-ui

fetches all ui elements for your css, it simply calls:

*= require jquery-ui/all

and if you write the following into your application.js

//= require jquery-ui

it fetches most jquery js files, with exception of some specific datepickers, there is no #all method for jquery in application.js, in most cases these would do, but if not, then you can add the rest diretcly into applications.js e.g

//=require jquery-ui/datepicker-ru

So in summary to use all ui for both css and js

*= require jquery-ui
//= require jquery-ui

Answer 2

I would suggest updating your application.js from: //= require jquery_ui to //= require jquery.ui.all as the preferable solution (rather than using an outdated version of the gem).

Answer 3

This is a known issue due to the jquery-rails dependency dropping jQuery-UI support. The workaround for the moment appears to be to force the jquery-rails gem to load using version 2.3.0:

gem 'jquery-rails', '~> 2.3.0'

A related problem due to this: Debug jQueryUI Versions in Rails.

Answer 4

Adding the jquery-ui-rails gem will also give you jquery.ui support.

gem 'jquery-ui-rails'

In your application.js and application.css files, you can add all modules

jquery.ui.all

or only the ones you need, e.g.:

jquery.ui.slider