Precompiled assets Images from gems not found - ruby-on-rails

My Rails app can't find precompiled images from gems in production. All other assets are working as is all assets in development. I get the following error when running in production mode;
ActionController::RoutingError (No route matches [GET] "/assets/dataTables/sort_asc.png"):
The assets seem to precompiled properly, images from app/assets/images show up.
Can someone shed some light on the problem?

Recompiling assets worked for me.
remove public/assets
1.rake assets:clobber RAILS_ENV=production
assets compile
2.rake assets:precompile RAILS_ENV=production
3.restart server,eg(nginx)
credit to albert.qing's answer here
I might add that I am using docker so I added this step towards the end of my docker file
/Dockerfile
FROM ruby:2.2.3-slim
.
.
.
# Precompile Rails assets
RUN bundle exec rake assets:clobber RAILS_ENV=production
RUN bundle exec rake assets:precompile RAILS_ENV=production
.
.
.

Related

Heroku is serving old assets for Rails 5 application

I've deployed a new version of a Rails 5 app on Heroku, running on cedar-14 stack. It didn't precompile while deploying, so I did heroku run rake assets:precompile manually. Still, I can see it includes old assets while requiring css and js files.
My files are in app/assets so it's not possible that directory isn't in assets compile path.
My config on application.rb and production.rb:
config.assets.compile = true
# I checked the environment variable, it responds to 'enabled',
# which would return true for the option.
config.public_file_server.enabled = ENV['RAILS_SERVE_STATIC_FILES'].present?
# Which I changed to expire old assets.
config.assets.version='1.1'
I tried these, but they didn't work:
$ heroku restart
$ heroku run rake assets:precompile
$ heroku run rake assets:clobber
The weird thing with these is that they do not affect assets in heroku server, which I checked with $ heroku run ls public/assets. Even after $ rake assets:precompile, even though it says this:
WRITING /app/public/assets/application-{VERY_LONG_HASH}.js
WRITING /app/public/assets/application-{VERY_LONG_HASH}.js.gz
WRITING /app/public/assets/application-{VERY_LONG_HASH}.css
WRITING /app/public/assets/application-{VERY_LONG_HASH}.css.gz
when I peek with the $ heroku run ls public/assets, I still see old assets staying there.
EDIT: I solved it by deleting all the local assets in public/assets, recompiling them with $ rake assets:clean && rake assets:precompile and including these assets in my git repository. Here is one concern:
Shouldn't heroku be responsible of compiling my assets on the fly? I think I shouldn't be compiling my assets everytime I deploy my application. Thanks.
Run on local
RAILS_ENV=production bundle exec rake assets:precompile
Next git add .
Next got commit -m"assets precompile"
Next git push origin yourBranchName
Deploy on heroku and you are done
You need to commit your changes first.
Then execute git push heroku yourbranch:master

Safely recompiling all assets on Rails 4 deployment?

Right now I have occasional issues with the Rails 4 asset pipeline that requires removing all assets and then recreating the assets.
During deployment, after pulling the latest from git, I refresh the assets by running, rake assets:clobber and then rake assets:precompile on my server. The problem is that during the time the assets are removed, the page gets served, not surprisingly, with no assets.
Is there anyway to force Rails to recompile all assets without having to run assets:clobber?
Here is what I usually do, when precompiling the assets.
// At a terminal, remove all assets from the file system
$ rm -rf public/assets
// Precompile the assets
$ rake assets:precompile
Always worked for me.
First run rake assets:precompile then run rake assets:clean. That will only remove old assets. https://github.com/rails/sprockets-rails/blob/master/README.md#rake-task

Assets in Rails 4

I've updated my Rails 3.2 app to 4.0 version and have stumbled upon one problem.
When I run the site with config.assets.compile = false option it doesn't load any assets. I've tried rake assets:precompile and it compiles assets at public/assets, but site doesn't load any of those. I've got application.js and application.css included in my layout, but when I check the source of the page, it's said that they are not found.
When I run the site with config.assets.compile = true everything works perfectly, but I've read that turning this off will result in greater performance, so I need to get it work.
Thanks in advance.
UPD: I've found that if I'm using this command RAILS_ENV=production bundle exec rake assets:precompile everything works. The question is why the rake assets:precompile command doesn't working?
UPD2: For those, who have the same issue, here's the explanation.
Regular rake assets:precompile compiles assets for application that runs in development mode. Specifying RAILS_ENV=production part in the beginning makes the command to compile assets for production mode, the bundle exec part is not required. So the final command looks like this: RAILS_ENV=production rake assets:precompile. Maybe it was obvious, but it took me a while to understand. Thanks.

Can I still add changes to CSS after precompile?

Once I've done bundle exec rake assets:precompile RAILS_ENV=production
It seems that it created something like application-e24jrjf834jg93bwuk13uy5gfd1y24f.css
Then when I access to the page, that is called from my app.
In development mode, I could add changes to just to css file and it applied.
In production mode, can I still add little changes to css?
If possible, how?
If you have set config.assets.initialize_on_precompile to true in your production.rb file then all you need to do is restart your server. Otherwise just delete the precompiled assets by running bundle exec rake assets:clean and precompile assets again bundle exec rake assets:precompile RAILS_ENV=production.

Confusion about rake assets:clean / cleanup on the asset pipeline in rails

Could somebody explain to me what the command rake assets:clean really does? Unfortunately the Rails Guides dont mention it. There is also the command rake assets:cleanup. Whats the difference?
Furthermore could somebody tell me when do I have to run rake assets:precompile in production. Do I run it on the server console after I deployed all my application files to my production server? Or do I precompile on my local machine and then do a deploy of all files?
Thanks all
Note: This answer is rails 3 specific. For rails 4 and later, look at other answers here.
If you precompile on your local machine, then you can commit these generated assets into the repository and proceed with deployment. No need to compile them on production machine.
But it introduces a problem: now when you change source files (coffescript / scss), the app won't pick up the changes, because it will serve precompiled files instead. rake assets:clean deletes these precompiled files.
In my projects assets are precompiled as a part of deployment. Capistrano makes it very easy.
Also, I never heard of rake assets:cleanup.
Run rake assets:clobber to actually clean the assets.
http://www.dixis.com/?p=735
Sergio's answer was completely correct in Rails 3. rake assets:clean deleted all assets that had been previously precompiled into the public/assets directory.
In Rails 4, you run rake assets:clobber to do the same thing.
If you run rake assets:precompile with the following config (by default turned on in staging and production):
# config/environments/production.rb
config.assets.digest = true
You compiled assets get timestamped. This means you can compile your new assets while leaving the old assets in place. You usually want to do this in production so you website will still access the old files while your running precompile to create your new files (because you've added new css/javascript). You now want to get rid of the old files that are no longer in use. The clean it removes the old versions of the precompiled assets while leaving the new assets in place.
rake assets:clean removes compiled assets. It is run by cap deploy:assets:clean to remove compiled assets, generally from a remote server.
cap deploy:clean removes old releases, generally from a remote server. It is not rake assets:clean
rake != cap
rake assets:clean is now run by cap deploy:cleanup_assets. Add require 'capistrano/rails/assets' to your Capfile and you get this cap-task. My capistrano version is v3.2.1.
clean up those untracked files with git clean -f for files and git clean -f -d for directories

Resources