when i run
bundle exec rake assets:precompile
I got
couldn't find file 'jquery'
in application.js in a line:
//= require jquery
Rails 3.2.2. What reason?
I would venture to say that you do not have a jquery.js file anywhere in your application. If it is not in the application / assets or suppliers / assets or lib / assets, add them to one of them - or if you are using the jquery-rails pearl, follow the instructions.
If you work in production, you should comment on the line.
Bundler.require(*Rails.groups(:assets => %w(development test)))
and uncomment the following
Bundler.require(:default, :assets, Rails.env)
, "", Gemfile, .
, , Uglifier " jquery", .