Rails 3.2.6字体的路由错误

Question

I have a Rails 3.2.6 based application using web-app-theme gem. After deploying in production I seeing following errors in /var/log/apache2/error.log .

[Wed Jul 18 23:00:14 2012] [error] [client 50.53.58.188] Premature end of script headers: fonts, referer: https://xxx.xxx.xx.xxx
[ pid=8920 thr=139857209571072 file=ext/apache2/Hooks.cpp:819 time=2012-07-18 23:00:14.743 ]: The backend application (process 9474) did not send a valid HTTP response; instead, it sent nothing at all. It is possible that it has crashed; please check whether there are crashing bugs in this application.
[ pid=9474 thr=9488700 file=utils.rb:176 time=2012-07-18 23:00:14.744 ]: *** Exception ActionController::RoutingError in application (No route matches [GET] "/assets/fonts/museosans_500-webfont.svg") (process 9474, thread #<Thread:0x00000001219278>):
    from /usr/lib/ruby/gems/1.9.1/gems/actionpack-3.1.3/lib/action_dispatch/middleware/show_exceptions.rb:53:in `call'
    from /usr/lib/ruby/gems/1.9.1/gems/railties-3.1.3/lib/rails/rack/logger.rb:13:in `call'
    from /usr/lib/ruby/gems/1.9.1/gems/rack-1.3.6/lib/rack/methodoverride.rb:24:in `call'
    from /usr/lib/ruby/gems/1.9.1/gems/rack-1.3.6/lib/rack/runtime.rb:17:in `call'
    from /usr/lib/ruby/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/cache/strategy/local_cache.rb:72:in `call'
.....

I have placed the mentioned file museosans_500-webfont.svg in app/assets/fonts/ directory. But why I am still this error. I also see similar error for other assets like /assets/fonts/museosans_500-webfont.ttf , etc.

Any feedback is much appreciated. Thanks.
-- Atarangp

Answer 1

Try add fonts dir to assets path in environment.rb:

config.assets.enabled = true
config.assets.paths << "#{Rails.root}/app/assets/fonts"

Answer 2

The url in your CSS / HTML seems to be wrong:

/assets/fonts/museosans_500-webfont.svg

You should change that to:

/assets/museosans_500-webfont.svg

But keep the file on the app/assets/fonts directory.

Answer 3

I ran into the same problem when integrating the Katex library.

The issue is that Rails' Asset Pipeline compiles the assets into the public/assets directory without keeping the fonts or images or javascript directories.

So when you're looking for /assets/fonts/museosans_500-webfont.svg , it doesn't exist, that font has been compiled to /assets/museosans_500-webfont.svg .

To solve this you have two options:

1. Update the path in the CSS or JS:

   /assets/fonts/museosans_500-webfont.svg

   becomes

   /assets/museosans_500-webfont.svg

2. Put the fonts in a fonts subdirectory:

   If you don't want to (or can't) update the CSS or JS (eg it's a minified third party library), then you can use the following method to ensure that there is a public/assets/fonts directory that contains all your fonts.

   Simply put your font(s) in the following path:

   /assets/fonts/fonts/museosans_500-webfont.svg

   Now your public/assets directory will contain a fonts directory and your GET request will be happy.

For more details see this answer .