Question

I am getting the following errors when using DataTables gem on heroku production.

couldn't find file 'jquery.ui.core'
couldn't find file 'jquery.ui.theme'

I followed the approach given at http://railscasts.com/episodes/340-datatables?view=asciicast
Does anyone have any idea?

Answer 1

jquery-datatables-rails gem does not install jQuery UI gem. At least their .gemspec says so. So, you need to add the gem manually in your Gemfile

gem 'jquery-ui-rails'

Github page infact recommends to add in assets group

group :assets do
  gem 'jquery-ui-rails'
end

If you do not use bundler, you just install the gem using following command:

gem install jquery-ui-rails