UPDATE:
this error is shown during git push heroku master :
-----> Preparing app for Rails asset pipeline
Running: rake assets:precompile
rake aborted!
couldn't find file 'twitter/bootstrap'
(in /tmp/build_2pmsvze33th3e/app/assets/javascripts/application.js:9)
Tasks: TOP => assets:precompile:primary
(See full trace by running task with --trace)
Precompiling assets failed, enabling runtime asset compilation
Injecting rails31_enable_runtime_asset_compilation
Please see this article for troubleshooting help:
http://devcenter.heroku.com/articles/rails31_heroku_cedar#troubleshooting
I upgraded Bootstrap 2 layout to 2.0.1 by following this guide. After that I get this error deploing to Heroku :
2012-02-23T23:12:09+00:00 app[web.1]: ActionView::Template::Error ('twitter/bootstrap.less' wasn't found.
2012-02-23T23:12:09+00:00 app[web.1]:
2012-02-23T23:12:09+00:00 app[web.1]: (in /app/app/assets/stylesheets/bootstrap.css.less)):
2012-02-23T23:12:09+00:00 app[web.1]: 7: /%title gitwatcher.com
2012-02-23T23:12:09+00:00 app[web.1]: 8: = csrf_meta_tags
2012-02-23T23:12:09+00:00 app[web.1]: 9: = stylesheet_link_tag "vendor", :media => "screen"
2012-02-23T23:12:09+00:00 app[web.1]: 10: = stylesheet_link_tag "application", :rel => "stylesheet"
2012-02-23T23:12:09+00:00 app[web.1]: 11: = stylesheet_link_tag "http://jqueryui.com/repository/tags/latest/themes/base/jquery.ui.all.css", :media => "screen, projection"
2012-02-23T23:12:09+00:00 app[web.1]: 12: /
2012-02-23T23:12:09+00:00 app[web.1]: 13: :css
2012-02-23T23:12:09+00:00 app[web.1]: app/views/layouts/application.html.haml:10:in `_app_views_layouts_application_html_haml___2608554683581233975_52490540'
2012-02-23T23:12:09+00:00 app[web.1]:
2012-02-23T23:12:09+00:00 app[web.1]:
2012-02-23T23:12:09+00:00 app[web.1]: cache: [GET /] miss
2012-02-23T23:12:09+00:00 app[web.1]: Processing by HomeController#index as HTML
2012-02-23T23:12:09+00:00 app[web.1]: Rendered shared/_watch-list-tab.html.haml (4.5ms)
2012-02-23T23:12:09+00:00 app[web.1]: Rendered shared/_watch-list-table.html.haml (30.2ms)
2012-02-23T23:12:09+00:00 app[web.1]: Rendered home/index.html.haml within layouts/application (101.7ms)
2012-02-23T23:12:09+00:00 app[web.1]: Compiled vendor.css (3ms) (pid 1)
2012-02-23T23:12:09+00:00 app[web.1]: Compiled css3-github-buttons/gh-buttons.css (0ms) (pid 1)
2012-02-23T23:12:09+00:00 app[web.1]: Compiled jquery_carousel/carousel.css (0ms) (pid 1)
2012-02-23T23:12:09+00:00 app[web.1]: Compiled application.css (2ms) (pid 1)
2012-02-23T23:12:09+00:00 app[web.1]: Completed 500 Internal Server Error in 858ms
Previously I got an existing Rails 3.1.3 app already working with Bootstrap 2 layout on Heroku Cedar.
Any idea ?
Remove the following file app/assets/stylesheets/bootstrap.css.less and enjoy.
Soruce https://github.com/seyhunak/twitter-bootstrap-rails/issues/123