我使用Rails 4.2，并不能得到footable图标显示。显示的是小方框，而不是我所期望的折叠行上的(+)和小排序箭头。在学习了这里的信息之后，我对代码做了一个简单的更改:删除css中的字体目录。也就是说，像这样更改所有的css条目:

src:url('fonts/footable.eot');

看起来像这样:

src:url('footable.eot');

它工作。我认为Rails 4.2已经假定了字体目录，所以在css代码中再次指定它会使字体文件找不到。希望这能有所帮助。

如果你有一个叫做scaffold。css的文件。Scss，那么就有可能覆盖您在其他文件中所做的所有自定义操作。我把那个文件注释掉了，突然之间一切都正常了。如果那个文件里没有什么重要的东西，你还不如把它删掉!

你需要在@font-face块中使用font-url，而不是url

@font-face {
font-family: 'Inconsolata';
src:font-url('Inconsolata-Regular.ttf') format('truetype');
font-weight: normal;
font-style: normal;
}

以及这条线在应用中。Rb，正如你提到的(对于app/assets/fonts中的字体

config.assets.paths << Rails.root.join("app", "assets", "fonts")

在我的情况下，最初的问题是使用资产url没有结果，而不是简单的url css属性。使用asset-url最终为我在Heroku工作。另外，在/assets/fonts文件夹中设置字体并调用asset-url('font.eot')，而无需添加任何子文件夹或任何其他配置。

If your Rails version is between > 3.1.0 and < 4, place your fonts in any of the these folders: app/assets/fonts lib/assets/fonts vendor/assets/fonts For Rails versions > 4, you must place your fonts in the app/assets/fonts folder. Note: To place fonts outside of these designated folders, use the following configuration: config.assets.precompile << /\.(?:svg|eot|woff|ttf)\z/ For Rails versions > 4.2, it is recommended to add this configuration to config/initializers/assets.rb. However, you can also add it to either config/application.rb , or to config/production.rb Declare your font in your CSS file: @font-face { font-family: 'Icomoon'; src:url('icomoon.eot'); src:url('icomoon.eot?#iefix') format('embedded-opentype'), url('icomoon.svg#icomoon') format('svg'), url('icomoon.woff') format('woff'), url('icomoon.ttf') format('truetype'); font-weight: normal; font-style: normal; } Make sure your font is named exactly the same as in the URL portion of the declaration. Capital letters and punctuation marks matter. In this case, the font should have the name icomoon. If you are using Sass or Less with Rails > 3.1.0 (your CSS file has .scss or .less extension), then change the url(...) in the font declaration to font-url(...). Otherwise, your CSS file should have the extension .css.erb, and the font declaration should be url('<%= asset_path(...) %>'). If you are using Rails > 3.2.1, you can use font_path(...) instead of asset_path(...). This helper does exactly the same thing but it's more clear. Finally, use your font in your CSS like you declared it in the font-family part. If it was declared capitalized, you can use it like this: font-family: 'Icomoon';

下面是我在资产管道中使用字体的方法:

1)把你所有的字体文件放在app/assets/fonts/下，实际上你不限制把它放在fonts文件夹名称下。你可以放任何你喜欢的子文件夹名。例如app/assets/abc或app/assets/anotherfonts。但我强烈建议你把它放在app/assets/fonts/文件夹结构更好。

2)从你的sass文件中，使用sass helper font-path来请求你的字体资产，就像这样

@font-face {
    font-family: 'FontAwesome';
    src: url(font-path('fontawesome-webfont.eot') + '?v=4.4.0');
    src: url(font-path('fontawesome-webfont.eot') + '?#iefix&v=4.4.0') format('embedded-opentype'),
         url(font-path('fontawesome-webfont.woff2') + '?v=4.4.0') format('woff2'),
         url(font-path('fontawesome-webfont.woff') + '?v=4.4.0') format('woff'),
         url(font-path('fontawesome-webfont.ttf') + '?v=4.4.0') format('truetype'),
         url(font-path('fontawesome-webfont.svg') + '?v=4.4.0#fontawesomeregular') format('svg');
    font-weight: normal;
    font-style: normal;
}

3)运行bundle exec rake assets:从本地机器预编译并查看application.css的结果。你应该会看到这样的东西:

@font-face {
    font-family: 'FontAwesome';
    src: url("/assets/fontawesome-webfont-d4f5a99224154f2a808e42a441ddc9248ffe78b7a4083684ce159270b30b912a.eot" "?v=4.4.0");
    src: url("/assets/fontawesome-webfont-d4f5a99224154f2a808e42a441ddc9248ffe78b7a4083684ce159270b30b912a.eot" "?#iefix&v=4.4.0") format("embedded-opentype"), url("/assets/fontawesome-webfont-3c4a1bb7ce3234407184f0d80cc4dec075e4ad616b44dcc5778e1cfb1bc24019.woff2" "?v=4.4.0") format("woff2"), url("/assets/fontawesome-webfont-a7c7e4930090e038a280fd61d88f0dc03dad4aeaedbd8c9be3dd9aa4c3b6f8d1.woff" "?v=4.4.0") format("woff"), url("/assets/fontawesome-webfont-1b7f3de49d68b01f415574ebb82e6110a1d09cda2071ad8451bdb5124131a292.ttf" "?v=4.4.0") format("truetype"), url("/assets/fontawesome-webfont-7414288c272f6cc10304aa18e89bf24fb30f40afd644623f425c2c3d71fbe06a.svg" "?v=4.4.0#fontawesomeregular") format("svg");
    font-weight: normal;
    font-style: normal;
}

如果你想了解更多资产管道是如何工作的，你可以访问下面的简单指南: https://designcode.commandrun.com/rails-asset-pipeline-simple-guide-830e2e666f6c#.6lejlayk2