The heroku server in rails4 is experiencing issues with loading stylesheets, images, and javascript

Question

The heroku server in rails4 is experiencing issues with loading stylesheets, images, and javascript

Hey there! I'm currently facing a problem with my application. In my Gemfile, I've added the following code:

group :production, :staging do
  gem 'rails_12factor'
end

Additionally, in my stylesheet named mytest.css.scss, I've included images using the code below:

.abc{background: image-url('/assets/mobile/phone.png');}

Furthermore, in my production.rb file, I have made these configurations:

config.serve_static_assets = true
config.assets.compile = true

Despite running rake assets:precompile in Heroku's bash terminal, the images, stylesheets, and JavaScript files are still not loading. Can someone provide me with guidance on how to resolve this issue? Your help would be greatly appreciated!

javascript css ruby-on-rails ruby-on-rails-4 heroku

Answer 1

Answer №1

Consider using the following alternatives:

background-image: url("logo.png")

background-image: url("images/logo.png")

background-image: url($image, $type)

background-image: data-url("logo.png")

Answer 2

Consider using the following alternatives:

background-image: url("logo.png")

background-image: url("images/logo.png")

background-image: url($image, $type)

background-image: data-url("logo.png")

Answer 3

Answer №2

Occasionally, Heroku may take some time to recognize new assets - our experience has shown that restarting the dyno after precompilation can often help load them upon refresh: heroku restart

It is advisable to use the dynamic helpers mentioned in sadaf2605's response:

#app/assets/stylesheets/application.js
.element {
   background: asset_url("your_image_url.png");
}

Additionally, make sure to precompile for production:

rake assets:precompile RAILS_ENV=production

Troubleshooting

If you encounter difficulties pinpointing the issue, we typically debug using these steps:

Upon pushing, right-click on your app and select view source
In the browser's developer tools console, watch out for any potential 404 errors (resource not found)
These errors will indicate which files Rails is attempting to locate - pay attention to the fingerprints

If the app is searching for fingerprinted files, it implies that the existing files may be incorrect. To address this, ensure to precompile prior to deploying to Heroku:

$ rake assets:precompile RAILS_ENV=production
$ git add .
$ git commit -a -m "Fix"
$ git push heroku master

This procedure ensures the correct files are sent to Heroku.

If your app isn't seeking fingerprinted files, it suggests that proper referencing in your CSS may be required. This concept should already be familiar (as stated above).

Answer 4

Occasionally, Heroku may take some time to recognize new assets - our experience has shown that restarting the dyno after precompilation can often help load them upon refresh: heroku restart

It is advisable to use the dynamic helpers mentioned in sadaf2605's response:

#app/assets/stylesheets/application.js
.element {
   background: asset_url("your_image_url.png");
}

Additionally, make sure to precompile for production:

rake assets:precompile RAILS_ENV=production

Troubleshooting

If you encounter difficulties pinpointing the issue, we typically debug using these steps:

Upon pushing, right-click on your app and select view source
In the browser's developer tools console, watch out for any potential 404 errors (resource not found)
These errors will indicate which files Rails is attempting to locate - pay attention to the fingerprints

If the app is searching for fingerprinted files, it implies that the existing files may be incorrect. To address this, ensure to precompile prior to deploying to Heroku:

$ rake assets:precompile RAILS_ENV=production
$ git add .
$ git commit -a -m "Fix"
$ git push heroku master

This procedure ensures the correct files are sent to Heroku.

If your app isn't seeking fingerprinted files, it suggests that proper referencing in your CSS may be required. This concept should already be familiar (as stated above).

The heroku server in rails4 is experiencing issues with loading stylesheets, images, and javascript

Answer №1

Answer №2

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