ruby-on-rails – 添加字体后,Heroku Rails资产管道无法预编译

添加字体到：

-app
--assets
---fonts

SCSS：

@font-face {
  font-family: LigatureSymbols;

  src: font-url('LigatureSymbols211.eot');
  src: local('LigatureSymbols'),font-url('LigatureSymbols211.eot?#iefix') format('embedded-opentype'),font-url('LigatureSymbols211.woff') format('woff'),font-url('LigatureSymbols211.ttf') format('truetype'),font-url('LigatureSymbols211.svg#LigatureSymbols') format('svg');

  font-weight: normal;
  font-style: normal;
}

production.rb：

config.assets.paths << Rails.root.join('app','assets','fonts')
config.assets.precompile += %w( .svg .eot .woff .ttf )

但当我推送到我的Heroku生产服务器时,我得到了这个：

-----> Preparing app for Rails asset pipeline
       Running: rake assets:precompile
       I,[2013-05-06T06:21:07.804043 #2036]  INFO -- : Writing /tmp/build_2snusxy9gm4d7/public/assets/LigatureSymbols211-c5b7db18fa0fcd910e92fee751776047.eot
       I,[2013-05-06T06:21:07.809822 #2036]  INFO -- : Writing /tmp/build_2snusxy9gm4d7/public/assets/LigatureSymbols211-09ff8be41a6bee98c834e9a278bb8b28.otf
       I,[2013-05-06T06:21:07.812685 #2036]  INFO -- : Writing /tmp/build_2snusxy9gm4d7/public/assets/LigatureSymbols211-1f682b1be252dbf6182d606a185b603f.svg
       I,[2013-05-06T06:21:07.819262 #2036]  INFO -- : Writing /tmp/build_2snusxy9gm4d7/public/assets/LigatureSymbols211-9e88765b872185b22e519da056cba9f0.ttf
       I,[2013-05-06T06:21:07.829518 #2036]  INFO -- : Writing /tmp/build_2snusxy9gm4d7/public/assets/LigatureSymbols211-a2d90ca6deff46bfcf9cade63d4902ce.woff
       I,[2013-05-06T06:21:07.838351 #2036]  INFO -- : Writing /tmp/build_2snusxy9gm4d7/public/assets/rails-5f9b3f343d9831cbf50b9bc980faf39b.png
       I,[2013-05-06T06:21:17.072501 #2036]  INFO -- : Writing /tmp/build_2snusxy9gm4d7/public/assets/application-6af5b81b9fcc820f1d43b4135f00317e.js
       rake aborted!
       undefined method `[]' for nil:NilClass
       (in /tmp/build_2snusxy9gm4d7/app/assets/stylesheets/application.css)

我试图在我的application.css中添加一个必需的行,但这也行不通.

编辑：

运行服务器时,我可以在我的开发机器上访问localhost：5000 / assets / LigatureSymbols-2.11.eot.不确定这是否有助于缩小出错的范围

编辑2：

该代码适用于SCSS字体注释掉,是否存在语法错误？

编辑3：

这是跟踪堆栈的顶部：

.../sprockets-2.9.2/lib/sprockets/sass_functions.rb:63:in `sprockets_context'
.../sprockets-2.9.2/lib/sprockets/sass_functions.rb:42:in `font_url'

我的font-url调用有问题吗？

编辑4：

从字体文件名中删除破折号并更改scss以反映,但同样的错误仍然存??在

编辑5：

在本地机器上生成CSS：

@font-face {
  font-family: LigatureSymbols;
  src: font-url("LigatureSymbols211.eot");
  src: local("LigatureSymbols"),font-url("LigatureSymbols211.eot?#iefix") format("embedded-opentype"),font-url("LigatureSymbols211.woff") format("woff"),font-url("LigatureSymbols211.ttf") format("truetype"),font-url("LigatureSymbols211.svg#LigatureSymbols") format("svg");
  font-weight: normal;
  font-style: normal; }