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Diffstat (limited to 'guides/source/asset_pipeline.md')
| -rw-r--r-- | guides/source/asset_pipeline.md | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/guides/source/asset_pipeline.md b/guides/source/asset_pipeline.md index 862742679c..72aff1e0dd 100644 --- a/guides/source/asset_pipeline.md +++ b/guides/source/asset_pipeline.md @@ -151,7 +151,7 @@ environments. You can enable or disable it in your configuration through the More reading: * [Optimize caching](http://code.google.com/speed/page-speed/docs/caching.html) -* [Revving Filenames: don’t use +* [Revving Filenames: don't use * querystring](http://www.stevesouders.com/blog/2008/08/23/revving-filenames-dont-use-querystring/) @@ -235,6 +235,11 @@ scope of the application or those libraries which are shared across applications * `vendor/assets` is for assets that are owned by outside entities, such as code for JavaScript plugins and CSS frameworks. +WARNING: If you are upgrading from Rails 3, please take into account that assets +under `lib/assets` or `vendor/assets` are available for inclusion via the +application manifests but no longer part of the precompile array. See +[Precompiling Assets](#precompiling-assets) for guidance. + #### Search Paths When a file is referenced from a manifest or a helper, Sprockets searches the @@ -378,8 +383,8 @@ it would make sense to have an image in one of the asset load paths, such as already available in `public/assets` as a fingerprinted file, then that path is referenced. -If you want to use a [data URI](http://en.wikipedia.org/wiki/Data_URI_scheme) — -a method of embedding the image data directly into the CSS file — you can use +If you want to use a [data URI](http://en.wikipedia.org/wiki/Data_URI_scheme) - +a method of embedding the image data directly into the CSS file - you can use the `asset_data_uri` helper. ```css @@ -428,7 +433,7 @@ $('#logo').attr src: "<%= asset_path('logo.png') %>" ### Manifest Files and Directives Sprockets uses manifest files to determine which assets to include and serve. -These manifest files contain _directives_ — instructions that tell Sprockets +These manifest files contain _directives_ - instructions that tell Sprockets which files to require in order to build a single CSS or JavaScript file. With these directives, Sprockets loads the files specified, processes them if necessary, concatenates them into one single file and then compresses them (if @@ -536,7 +541,7 @@ Additional layers of preprocessing can be requested by adding other extensions, where each extension is processed in a right-to-left manner. These should be used in the order the processing should be applied. For example, a stylesheet called `app/assets/stylesheets/projects.css.scss.erb` is first processed as ERB, -then SCSS, and finally served as CSS. The same applies to a JavaScript file — +then SCSS, and finally served as CSS. The same applies to a JavaScript file - `app/assets/javascripts/projects.js.coffee.erb` is processed as ERB, then CoffeeScript, and served as JavaScript. @@ -589,7 +594,7 @@ generate instead: Assets are compiled and cached on the first request after the server is started. Sprockets sets a `must-revalidate` Cache-Control HTTP header to reduce request -overhead on subsequent requests — on these the browser gets a 304 (Not Modified) +overhead on subsequent requests - on these the browser gets a 304 (Not Modified) response. If any of the files in the manifest have changed between requests, the server @@ -760,8 +765,8 @@ headers. For Apache: ```apache -# The Expires* directives requires the Apache module `mod_expires` to be -# enabled. +# The Expires* directives requires the Apache module +# `mod_expires` to be enabled. <Location /assets/> # Use of ETag is discouraged when Last-Modified is present Header unset ETag FileETag None |