Rails 4 assets not loading in production

Question

I m trying to put my app into production and image and css asset paths aren t working   Here s what I m currently doing    Image assets live in  app assets images image jpg  Stylesheets live in  app assets stylesheets style css In my layout  I reference the css file like this   lt    stylesheet link tag     styles   media   all    data-turbolinks-track    gt  true   gt  Before restarting unicorn  I run RAILS ENV production bundle exec rake assets precompile and it succeeds and I see the fingerprinted files in the public assets directory    When I browse to my site  I get a 404 not found error for mysite com stylesheets styles css    What am I doing wrong   Update  In my layout  it looks like this    lt    stylesheet link tag     bootstrap min   media   all    data-turbolinks-track    gt  true   gt   lt    stylesheet link tag     styles   media   all    data-turbolinks-track    gt  true   gt   lt    javascript include tag  application    data-turbolinks-track    gt  true   gt    The generate source is this    lt link data-turbolinks-track  true  href   stylesheets bootstrap min css  media  all  rel  stylesheet    gt   lt link data-turbolinks-track  true  href   stylesheets styles css  media  all  rel  stylesheet    gt   lt script data-turbolinks-track  true  src   assets application-0c647c942c6eff10ad92f1f2b0c64efe js  gt  lt  script gt    Looks like Rails is not properly looking for the compiled css files  But it s very confusing why it s working correctly for javascripts  notice the  assets      js path

User · Accepted Answer

In  config environments production rb I had to add this   Rails application config assets precompile     w    js        css   css erb     The  js was getting precompiled already  but I added it anyway  The  css and  css erb apparently don t happen automatically  The       excludes partials from being compiled -- it s a regexp   It s a little frustrating that the docs clearly state that asset pipeline IS enabled by default but doesn t clarify the fact that only applies to javascripts

User · Answer

I may be wrong but those who recommend changing  config assets compile   true  The comment on this line reads   Do not fallback to assets pipeline if a precompiled asset is missed   This suggests that by setting this to true you are not fixing the problem but rather bypassing it and running the pipeline every time  This must surely kill your performance and defeat the purpose of the pipeline   I had this same error and it was due to the application running in a sub folder that rails didn t know about   So my css file where in home subfolder app public      but rails was looking in home app public      try either moving your app out of the subfolder or telling rails that it is in a subfolder

User · Answer

The default matcher for compiling files includes application js  application css and all non-JS CSS files  this will include all image assets automatically  from app assets folders including your gems  If you have other manifests or individual stylesheets and JavaScript files to include  you can add them to the precompile array in config initializers assets rb   Rails application config assets precompile      admin js    admin css    swfObject js    http   guides rubyonrails org asset pipeline html precompiling-assets

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What you SHOULD NOT do   Some of my colleagues above have recommended you to do this   config serve static assets   true     DON   T DO THIS    config public file server enabled   true    DON   T DO THIS     The rails asset pipeline says of the above approach       This mode uses more memory  performs more poorly than the default and is not recommended  See here   http   edgeguides rubyonrails org asset pipeline html live-compilation    What you SHOULD do   Precompile your assets   RAILS ENV production rake assets precompile  You can probably do that with a rake task

User · Answer

I m running Ubuntu Server 14 04  Ruby 2 2 1 and Rails 4 2 4 I have followed a deploy turorial from DigitalOcean and everything went well but when I go to the browser and enter the IP address of my VPS my app is loaded but without styles and javascript   The app is running with Unicorn and Nginx  To fix this problem I entered my server using SSH with my user  deployer  and go to my app path which is   home deployer apps blog  and run the following command   RAILS ENV production bin rake assets precompile   Then I just restart the VPS and that s it  It works for me   Hope it could be useful for somebody else

User · Answer

If precompile is set you DO NOT need  config assets compile   true   as this is to serve assets live   Our problem was we only had development secret key base set in config secrets yml  development      secret key base   83d141eeb181032f4070ae7b1b27d9ff    Need entry for production environment

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it is not recommended to let capistrano do assets precompile  because it may take ages and often time out  try to do local assets precompile    1st  set in config application rb   config assets initialize on precompile   false  then do local   RAILS ENV production bin rake assets precompile  and add those public assets to git    and config environments development rb  change your asset path to avoid using precompiled assets    config assets prefix     dev-assets    If you have db connection issue  means u have initializer that uses db  one way around it is to set a new environment by duplicate production rb as maybe production2 rb  and in database yml  add production2 environment with development db setting  then do   RAILS ENV production2 bin rake assets precompile   if you are still facing some issue with assets  for example ckeditor  add the js file into config initializers assets rb   Rails application config assets precompile     w  ckeditor js

User · Answer

I was able to solve this problem by changing  config assets compile   false to config assets compile   true in  config environments production rb  Update  June 24  2018   This method creates a security vulnerability if the version of Sprockets you re using is less than 2 12 5  3 7 2  or 4 0 0 beta8

User · Answer

change your Production rb file line  config assets compile   false   into   config assets compile   true   and also add  config assets precompile        js      css      css erb

User · Answer

In rails 4 you need to make the changes below   config assets compile   true config assets precompile        js      css      css erb      This works with me  use following command to pre-compile assets  RAILS ENV production bundle exec rake assets precompile   Best of luck

User · Answer

Rails 4 no longer generates the non fingerprinted version of the asset  stylesheets style css will not be generated for you   If you use stylesheet link tag then the correct link to your stylesheet will be generated  In addition styles css should be in config assets precompile which is the list of things that are precompiled

User · Answer

There are 2 things you must accomplish to serve the assets in production    Precompile the assets  Serve the assets on the server to browser    1  In order to precompile the assets  you have several choices    You can run rake assets precompile on your local machine  commit it to source code control  git   then run the deployment program  for example capistrano  This is not a good way to commit precompiled assets to SCM  You can write a rake task that run RAILS ENV production rake assets precompile on the target servers each time you deploy your Rails app to production  before you restart the server    Code in a task for capistrano will look similar to this   on roles  app  do   if DEPLOY ENV     production      execute  cd   DEPLOY TO DIR  current  amp  amp  RAILS ENV production rvm   ruby string  do rake assets precompile     end end   2  Now  you have the assets on production servers  you need to serve them to browser   Again  you have several choices    Turn on Rails static file serving in config environments production rb   config serve static assets   true   old  or  config serve static files   true   new    Using Rails to serve static files will kill your Rails app performance  Configure nginx  or Apache  to serve static files   For example  my nginx that was configured to work with Puma looks like this   location      assets images fonts              alias  var www foster care current public  1  2      gzip on      expires max      add header Cache-Control public

User · Answer

Even we faced the same problem where RAILS ENV production bundle exec rake assets precompile succeeded but things did not work as expected  We found that unicorn was the main culprit here    Same as your case  even we used to restart unicorn after compiling the assets  It was noticed that when unicorn is restarted  only its worker processes are restarted and not the master process  This is the main reason the correct assets are not served    Later  after compiling assets  we stopped and started unicorn so that the unicorn master process is also restarted and the correct assets were getting served  Stopping and starting unicorn brings around 10 secs on downtime when compared to restarting the unicorn  This is the workaround that can be used where as long term solution is move to puma from unicorn

User · Answer

For Rails 5  you should enable the follow config code   config public file server enabled   true  By default  Rails 5 ships with this line of config    config public file server enabled   ENV  RAILS SERVE STATIC FILES   present   Hence  you will need to set the environment variable RAILS SERVE STATIC FILES to true

User · Answer

First of all check your assets  it might be possible there is some error in pre-compiling of assets   To pre-compile assets in production ENV run this command   RAILS ENV production rake assets precompile   If it shows error  remove that first    In case of  undefined variable  error  load that variable file before using it in another file   example    import  variables    import  style     in application rb file set sequence of pre-compiliation of assets  example   config assets precompile       application js    admin js    admin events js    admin gallery js    frontendgallery js    config assets precompile       application css    admin css   admin events css    admin gallery css    frontendgallery css

User · Answer

Found this   The configuration option config serve static assets has been renamed to config serve static files to clarify its role   in config environments production rb     Disable serving static files from the   public  folder by default since   Apache or NGINX already handles this  config serve static files   ENV  RAILS SERVE STATIC FILES   present    So set env RAILS SERVE STATIC FILES or using Nginx to serving static files  Add config serve static assets   true will still work  but removed in future

User · Answer

location     assets      expires 1y    add header Cache-Control public    add header ETag         This fixed the problem for me in production  Put it into the nginx config

User · Answer

I just had the same problem and found this setting in config environments production rb     Rails 4  config serve static assets   false    Or for Rails 5  config public file server enabled   false   Changing it to true got it working  It seems by default Rails expects you to have configured your front-end webserver to handle requests for files out of the public folder instead of proxying them to the Rails app  Perhaps you ve done this for your javascript files but not your CSS stylesheets    See Rails 5 documentation   As noted in comments  with Rails 5 you may just set the RAILS SERVE STATIC FILES environment variable  since the default setting is config public file server enabled   ENV  RAILS SERVE STATIC FILES   present

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