# Couldn't find file 'jquery' rails 3.1 stable mountable engine **URL:** \ **Category:** Rails\ **Created:** [September 1, 2011, 9:02pm UTC](https://www.ruby-forum.com/t/couldnt-find-file-jquery-rails-3-1-stable-mountable-engine/211345 "2011-09-01T21:02:21Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![luislavena](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/0ea827/32.png) [@luislavena](https://www.ruby-forum.com/u/luislavena)\ **Post date:** [September 1, 2011, 9:02pm UTC](https://www.ruby-forum.com/t/couldnt-find-file-jquery-rails-3-1-stable-mountable-engine/211345/1 "2011-09-01T21:02:21Z")
When I create a new engine in Rails 3.1 stable and then access the dummy app or the engine I get an error say that the app can’t find jquery. I’ve created the engine using rails plugin new coffee --mountable I’ve also created a basic controller in the engine and the dummy app. If I remove the javascript include tag, everything works. But with the tag there it just bails since it can’t fine jQuery. The jquery-rails gem is installed. I have jquery as a dependency in my gemspec file. I’ve even added an Gemfile to the dummy app just to try, but it gives the same error. ## accessing the dummy app Sprockets::FileNotFound in Root#index couldn’t find file ‘jquery’ (in /Webapps/coffee/test/dummy/app/assets/javascripts/application.js:7) Started GET “/” for 127.0.0.1 at 2011-09-01 20:31:01 +0200 Processing by RootController#index as HTML Rendered root/index.html.erb within layouts/application (8.9ms) Completed 500 Internal Server Error in 89ms ActionView::Template::Error (couldn’t find file ‘jquery’ (in /Webapps/coffee/test/dummy/app/assets/javascripts/application.js:7)): 3: 4: Dummy 5: \<%= stylesheet\_link\_tag “application” %\> 6: \<%= javascript\_include\_tag “application” %\> 7: \<%= csrf\_meta\_tags %\> 8: 9: app/views/layouts/application.html.erb:6:in `\_app\_views\_layouts\_application\_html\_erb\_\_\_187280571548804820\_2155822020’ ## accessing the engine Sprockets::FileNotFound in Coffee/pages#index couldn’t find file ‘jquery’ (in /Webapps/coffee/app/assets/javascripts/coffee/application.js:7) Started GET “/coffee” for 127.0.0.1 at 2011-09-01 20:49:57 +0200 Processing by Coffee::PagesController#index as HTML Rendered /Webapps/coffee/app/views/coffee/pages/index.html.erb within layouts/coffee/application (0.3ms) Completed 500 Internal Server Error in 41ms ActionView::Template::Error (couldn’t find file ‘jquery’ (in /Users/jorgen/Webapps/coffee/app/assets/javascripts/coffee/application.js:7)): 3: 4: Coffee 5: \<%= stylesheet\_link\_tag “coffee/application” %\> 6: \<%= javascript\_include\_tag “coffee/application” %\> 7: \<%= csrf\_meta\_tags %\> 8: 9: ---
**Author:** ![coffeepunk](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/e47774/32.png) [@coffeepunk](https://www.ruby-forum.com/u/coffeepunk)\ **Post date:** [September 2, 2011, 4:04am UTC](https://www.ruby-forum.com/t/couldnt-find-file-jquery-rails-3-1-stable-mountable-engine/211345/2 "2011-09-02T04:04:02Z")
Hey Jorgen, This isn’t a solution, but it may be better to simply remove the line from your js file (Looks like #= require jquery) and use the Google CDN version: = javascript\_include\_tag ‘[//ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js](https://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js)’, :defer =\> true, :async =\> true This will this be faster for your users (because Google has more cloudspace than you, probably) and it also removes the need for Sprockets to compress it. I hope you find out what’s going on. 😕 Cheers On Thu, Sep 1, 2011 at 12:02 PM, Jorgen N. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > ## gemspec file. I’ve even added an Gemfile to the dummy app just to try, Started GET “/” for 127.0.0.1 at 2011-09-01 20:31:01 +0200 6: \<%= javascript\_include\_tag “application” %\> Sprockets::FileNotFound in Coffee/pages#index ActionView::Template::Error (couldn’t find file ‘jquery’ > > Posted via [http://www.ruby-forum.com/](http://www.ruby-forum.com/). > > – > You received this message because you are subscribed to the Google G. “Ruby > on Rails: Talk” group. > To post to this group, send email to [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid). > To unsubscribe from this group, send email to > [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid). > For more options, visit this group at > [http://groups.google.com/group/rubyonrails-talk?hl=en](http://groups.google.com/group/rubyonrails-talk?hl=en). – Kurtis Rainbolt-Greene: title: “Hacker, Designer, Author, & Father” address: “718 Mill Street, Springfield, OR 97477” phone: “(202) 643-2263” ---
**Author:** ![coffeepunk](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/e47774/32.png) [@coffeepunk](https://www.ruby-forum.com/u/coffeepunk)\ **Post date:** [September 2, 2011, 8:46am UTC](https://www.ruby-forum.com/t/couldnt-find-file-jquery-rails-3-1-stable-mountable-engine/211345/3 "2011-09-02T08:46:35Z")
Hi Kurtis, Thanks for your answer. I was thinking the same thing and I’ll just start developing without javascript all together since I don’t need it in the initial phase. I’ve also tried using and creating the engine with Rails 3.1.0rc5 and 3.1.0rc8 and I get the same error. Surely I can’t be alone with geting this error? I think I’ll post an issue on Github. ---
**Author:** ![coffeepunk](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/e47774/32.png) [@coffeepunk](https://www.ruby-forum.com/u/coffeepunk)\ **Post date:** [September 2, 2011, 8:12pm UTC](https://www.ruby-forum.com/t/couldnt-find-file-jquery-rails-3-1-stable-mountable-engine/211345/4 "2011-09-02T20:12:15Z")
I thought I would post here very quickly because I was having the same problem and utilizing the google cloud resolved the issue. Here is what it looks like now. // This is a manifest file that’ll be compiled into including all the files listed below. // Add new JavaScript/Coffee code in separate files in this directory and they’ll automatically // be included in the compiled file accessible from [http://example.com/assets/application.js](http://example.com/assets/application.js) // It’s not advisable to add code directly here, but if you do, it’ll appear at the bottom of the // the compiled file. // //= javascript\_include\_tag ‘[//ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js](https://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js)’, :defer =\> true, :async =\> true //= require jquery\_ujs //= require\_tree . ---
**Author:** ![coffeepunk](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/e47774/32.png) [@coffeepunk](https://www.ruby-forum.com/u/coffeepunk)\ **Post date:** [September 12, 2011, 11:12pm UTC](https://www.ruby-forum.com/t/couldnt-find-file-jquery-rails-3-1-stable-mountable-engine/211345/5 "2011-09-12T23:12:23Z")
I had the same problem and finally fixed. The solution is to explicitly require the ‘jquery-rails’ gem in the dummy config/application.rb file, so Sprockets can add the jquery assets in the assets.path. In test/dummy/config/application.rb ``` require File.expand_path('../boot', __FILE__ ) # Pick the frameworks you want: # require "active_record/railtie" require "action_controller/railtie" require "action_mailer/railtie" require "active_resource/railtie" require "rails/test_unit/railtie" require "sprockets/railtie" # Auto-require default libraries and those for the current Rails ``` environment. Bundler.require :default, Rails.env ``` require "coffee" require "jquery-rails" # this should be auto-included with the ``` Bundler.require :default, Rails.env, but it’s not happening ``` module Dummy class Application < Rails::Application # ... end end ``` Same with other gems that have assets that should be auto-loaded by Sprockets. Hope this helps. - Mario Izquierdo ---
**Author:** ![coffeepunk](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/e47774/32.png) [@coffeepunk](https://www.ruby-forum.com/u/coffeepunk)\ **Post date:** [September 19, 2011, 9:24am UTC](https://www.ruby-forum.com/t/couldnt-find-file-jquery-rails-3-1-stable-mountable-engine/211345/6 "2011-09-19T09:24:03Z")
The solution for me was to add jquery-rails to my engines Gemfile and restart the server. I would suspect that it does not want adding to the gemspec however, however adding it as a development dependency might be okay. – Kris. ---
**Author:** ![coffeepunk](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/e47774/32.png) [@coffeepunk](https://www.ruby-forum.com/u/coffeepunk)\ **Post date:** [September 22, 2011, 2:00am UTC](https://www.ruby-forum.com/t/couldnt-find-file-jquery-rails-3-1-stable-mountable-engine/211345/7 "2011-09-22T02:00:05Z")
Fixed here > > > Closes #3091 ---
**Author:** ![coffeepunk](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/e47774/32.png) [@coffeepunk](https://www.ruby-forum.com/u/coffeepunk)\ **Post date:** [September 2, 2011, 9:29am UTC](https://www.ruby-forum.com/t/couldnt-find-file-jquery-rails-3-1-stable-mountable-engine/211345/8 "2011-09-02T09:29:43Z")
At the very least it could be a good idea to include in the issue: It’d be nice to know where Sprockets was looking for the file. On Thu, Sep 1, 2011 at 11:46 PM, Jorgen N. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > I think I’ll post an issue on Github. – Kurtis Rainbolt-Greene: title: “Hacker, Designer, Author, & Father” address: “718 Mill Street, Springfield, OR 97477” phone: “(202) 643-2263” ---
**Author:** ![coffeepunk](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/e47774/32.png) [@coffeepunk](https://www.ruby-forum.com/u/coffeepunk)\ **Post date:** [July 22, 2015, 9:22pm UTC](https://www.ruby-forum.com/t/couldnt-find-file-jquery-rails-3-1-stable-mountable-engine/211345/9 "2015-07-22T21:22:47Z")
tothemario wrote in post #1021529: > ``` > # Auto-require default libraries and those for the current Rails > > ``` > > environment. > Bundler.require :default, Rails.env > > ``` > require "coffee" > require "jquery-rails" # this should be auto-included with the > > ``` > > Bundler.require :default, Rails.env, but it’s not happening > > ``` > module Dummy > class Application < Rails::Application > # ... > end > end > > ``` > > Same with other gems that have assets that should be auto-loaded by > Sprockets. > Hope this helps. > > - Mario Izquierdo This solved my problem, I gotta login to thank you!