Question posted in 
my assets (i.e. css and js) in vendor folders are not showing in heroku staging environment, however, images in app/assets/images works and it also works in development environment though. I do not want to move the assets in vendors folder to the app folder because I want to keep vendor templates separate.
Below are my setup and the list of things I have tried:
app/assets/stylesheets/application.css.scss
*= require_tree .
*= require_self
*= require style.default
app/assets/stylesheets/application.js
//= require jquery
//= require jquery_ujs
//= require turbolinks
//= require jquery-1.11.1.min
//= require jquery-migrate-1.2.1.min
//= require jquery-ui-1.10.3.min
//= require modernizr.min
//= require bootstrap.min
//= require jquery.sparkline.min
//= require toggles.min
//= require retina.min
//= require jquery.cookies
//= require custom
//= require dashboard
//= require_tree .
config/initializers/assets.rb
Rails.application.config.assets.precompile += %w( *.css *.js )
Ran the following command in terminal
RAILS_ENV=production rake assets:precompile
RAILS_ENV=staging rake assets:precompile
rake assets:precompile
heroku run rake assets:precompile
Results from pushing to Heroku using "git push staging master". Manifest file was detected as shown below.
remote: Bundle complete! 35 Gemfile dependencies, 85 gems now installed.
remote: Gems in the groups development and test were not installed.
remote: Bundled gems are installed into ./vendor/bundle.
remote: Bundle completed (1.14s)
remote: Cleaning up the bundler cache.
remote: Detected manifest file, assuming assets were compiled locally
environments/staging.rb
config.serve_static_files = true
environments/production.rb
config.serve_static_files = true
Heroku Config
RACK_ENV: staging
RAILS_ENV: staging
GemFile
group :production do
gem 'unicorn'
gem 'rails_12factor'
gem 'pg'
gem 'heroku-deflater'
end
Rails Version
Rails 4.2.0
Ruby Version
ruby 2.1.3p242 (2014-09-19 revision 47630) [x86_64-darwin13.0]
Note: "config.assets.compile = true" works, but the idea is to precompile all the assets, not to rely on compile
Many thanks for taking the effort to look at my work.
UPDATE
group :production :staging do
gem 'unicorn'
gem 'rails_12factor'
gem 'pg'
gem 'heroku-deflater'
end
adding :staging to in gemfile didnt work.
config/application.rb
config.serve_static_assets = true
adding config.serve_static_assets in application.rb file didnt work..
So I further ran the following command in the staging heroku:
Rails.application.config.assets
{:_blocks=>[#<Proc:0x007fbbb0bf1558@/app/vendor/bundle/ruby/2.1.0/gems/autoprefixer-rails-5.1.8/lib/autoprefixer-rails/railtie.rb:14>, #<Proc:0x007fbbb39ac0d8@/app/vendor/bundle/ruby/2.1.0/gems/sass-rails-5.0.3/lib/sass/rails/railtie.rb:56>], :paths=>["/app/app/assets/images", "/app/app/assets/javascripts", "/app/app/assets/stylesheets", "/app/vendor/assets/fonts", "/app/vendor/assets/javascripts", "/app/vendor/assets/stylesheets", "/app/vendor/bundle/ruby/2.1.0/gems/bootstrap_form-2.2.0/app/assets/stylesheets", "/app/vendor/bundle/ruby/2.1.0/gems/turbolinks-2.5.3/lib/assets/javascripts", "/app/vendor/bundle/ruby/2.1.0/gems/jquery-rails-4.0.3/vendor/assets/javascripts", "/app/vendor/bundle/ruby/2.1.0/gems/coffee-rails-4.1.0/lib/assets/javascripts"], :prefix=>"/assets", :manifest=>nil, :precompile=>[#<Proc:0x007fbbb1c00228@/app/vendor/bundle/ruby/2.1.0/gems/sprockets-rails-2.2.4/lib/sprockets/railtie.rb:60 (lambda)>, /(?:/|\|A)application.(css|js)$/, "*.css", "*.js"], :version=>"1.0", :debug=>false, :compile=>false, :digest=>true, :js_compressor=>:uglifier, :css_compressor=>:sass}
Rails.application.config.assets.precompile
[#<Proc:0x007fbbb1c00228@/app/vendor/bundle/ruby/2.1.0/gems/sprockets-rails-2.2.4/lib/sprockets/railtie.rb:60 (lambda)>, /(?:/|\|A)application.(css|js)$/, "*.css", "*.js"]
Also ran "heroku run rails c" then executed the following:
irb(main):002:0> puts helper.asset_path("style.default.css")
/assets/style.default-84d0516848a763e0b8b8b7005f7ae816.css
Used the following debugging method for heroku staging:
$ heroku run bash
$ ls public/assets
Output below
angular.min-4d194b7f4f12ed8eafec2d7a0c835904.js
angular.min-4d194b7f4f12ed8eafec2d7a0c835904.js.gz
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animate.min-fa7d9f43baff3065a44d391f5fb24dec.css
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application-30c5d5ea113f5d302dc72bac7a453e2c.js
application-30c5d5ea113f5d302dc72bac7a453e2c.js.gz
application-76133410c1e24aced49dbeb2178152ad.css
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3
Answers
So after some trial and error and getting feedback, below are some take away that I hope can help others in the future. The short of it is that, if you face any problem, always refer to Rails Asset Pipeline. This is because different rails versions has different methods. At the point of this answer, mine is Rails Version:
Rails 4.2.0. Ruby Version:ruby 2.1.3p242 (2014-09-19 revision 47630) [x86_64-darwin13.0]Do note that this answer applied to my situation, may vary with yours.
My Problem Statement: I bought a bootstrap template online and would like to incorporate it to my application. Below are the following steps I took to resolve the problem.
<%= asset_path(...) %>intourl(...). Note that there are various ways to do this i.e. use font_path or image_path, use css.scss instead of css.erb etc. Please refer to documentation from asset pipeline. I also removed any@import url('<your file>.css');cause I will be using*= require <your files>later*= require font.csscomes before*= require default.css.rails s. If you put the files correctly in their respective folders in vendor/assets. Your application should show up nicely. Else, please refer to the instructions above and try again.RAILS_ENV=production rake assets:precompilein the terminal. You should see your assets being precompiled. Once the precompile is done, you should be able to find an assets folder in your public folder (your images, videos and fonts assets should each have their own files, whilst all css and js will be cramped into one file asapplication-<md5>.cssandapplication-<md5>.jsrespectively). If this didnt workout properly, your precompile fails. It is most probably due to css or js syntax error, go back and check the files and make the changes. If you have made any corrective changes, please runrake assets:clobberto remove the public/assets then run the production precompile again. Once all is good, run the following command in your terminalrails s -e production, this opens up your server locally but in production environment instead of dev environment. When running localhost:3000 if your secret_key_base is not copied properly, you will see an error in your browser asking you to make changes to the secret key.Viewing localhost:3000 in browser - If your view in local production is different from that of your local development view. For example, most of the css did not show up properly, troubleshoot by
inspect element, you should be able to see 404 errors. this means that your code or assets in .css and .js is not referenced or configured properly. go back to point 8 and redo.ActionController::RoutingError (No route matches [GET] "/assets/.... this means that your code or assets in .css and .js is not referenced or configured properly. go back to point 8 and redo.Pushing to heroku - Once everything is good locally, you can now push to heroku. because you ran the precompile for production env locally, you will see that during your push to heroku, heroku will state something like
remote: Detected manifest file, assuming assets were compiled locally. else, heroku will have to precompile for you. Note that heroku use rails_12factor gem in production. Additionally, these gems, sass-rails, coffee-rails, uglifier, come in default when you created your rails app which is essential for your asset pipeline.Things I did not do to resolve my problem:
Though the methods below are valid,
I DID NOT use
config.serve_static_assets = truefor application.rb, production.rb or staging.rbI DID NOT ran
rake assets:precompileI DID NOT ran
heroku run rake assets:precompileI DID NOT put
Rails.application.config.assets.precompile += %w( *.css *.js )in config/initializers/assets.rbI DID NOT resort to using
config.assets.compile = trueI DID NOT use
config.assets.paths << Rails.root.join("lib", "videoplayer", "flash")in config/application.rbOther links that could be helpful:
No route matches [GET] /assets
https://github.com/FortAwesome/font-awesome-sass/issues/48
Things I could not explain
This solution only worked when I recreated a new rails app. My old rails app did not work as when I ran precompile, the css and js files in public/assets were not in one
application-<md5>.cssandapplication-<md5>.jsrespectively. instead, they were scattered to their own font.css, default.css etc etc, as seen from "Output below" shown above. Will be doing more research to get down to the bottom of this.I hope my answer above helped. Do give feedback if I made any mistakes or missed out anything.
I am not sure if you saw this page, but I had similar issue and this helped me out.
I would check to make sure you have
config.serve_static_assets = truein yourconfig/application.rbIf you do I would skip down to the debugging section
Adding the vendor asset to precompile in assets.rb (f.e.
Rails.application.config.assets.precompile += %w( highcharts.js )worked form me, when deploying to Heroku. (and I didn’t use a joker like *.js)