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Diffstat (limited to 'guides/source/asset_pipeline.md')
| -rw-r--r-- | guides/source/asset_pipeline.md | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/guides/source/asset_pipeline.md b/guides/source/asset_pipeline.md index 439f2bef3a..4efffc6605 100644 --- a/guides/source/asset_pipeline.md +++ b/guides/source/asset_pipeline.md @@ -21,8 +21,11 @@ What is the Asset Pipeline? The asset pipeline provides a framework to concatenate and minify or compress JavaScript and CSS assets. It also adds the ability to write these assets in other languages and pre-processors such as CoffeeScript, Sass and ERB. +It allows assets in your application to be automatically combined with assets +from other gems. For example, jquery-rails includes a copy of jquery.js +and enables AJAX features in Rails. -The asset pipeline is technically no longer a core feature of Rails 4, it has +The asset pipeline is technically no longer a core feature from Rails 4 onwards -- it has been extracted out of the framework into the [sprockets-rails](https://github.com/rails/sprockets-rails) gem. @@ -35,7 +38,7 @@ passing the `--skip-sprockets` option. rails new appname --skip-sprockets ``` -Rails 4 automatically adds the `sass-rails`, `coffee-rails` and `uglifier` +Rails automatically adds the `sass-rails`, `coffee-rails` and `uglifier` gems to your Gemfile, which are used by Sprockets for asset compression: ```ruby @@ -44,8 +47,8 @@ gem 'uglifier' gem 'coffee-rails' ``` -Using the `--skip-sprockets` option will prevent Rails 4 from adding -`sass-rails` and `uglifier` to your Gemfile, so if you later want to enable +Using the `--skip-sprockets` option will prevent Rails from adding +them to your Gemfile, so if you later want to enable the asset pipeline you will have to add those gems to your Gemfile. Also, creating an application with the `--skip-sprockets` option will generate a slightly different `config/application.rb` file, with a require statement @@ -327,7 +330,7 @@ familiar `javascript_include_tag` and `stylesheet_link_tag`: <%= javascript_include_tag "application" %> ``` -If using the turbolinks gem, which is included by default in Rails 4, then +If using the turbolinks gem, which is included by default in Rails, then include the 'data-turbolinks-track' option which causes turbolinks to check if an asset has been updated and if so loads it into the page: @@ -443,7 +446,7 @@ makes fewer requests. Compression also reduces file size, enabling the browser to download them faster. -For example, a new Rails 4 application includes a default +For example, a new Rails application includes a default `app/assets/javascripts/application.js` file containing the following lines: ```js @@ -484,7 +487,7 @@ which contains these lines: */ ``` -Rails 4 creates both `app/assets/javascripts/application.js` and +Rails creates both `app/assets/javascripts/application.js` and `app/assets/stylesheets/application.css` regardless of whether the --skip-sprockets option is used when creating a new rails application. This is so you can easily add asset pipelining later if you like. @@ -1108,7 +1111,7 @@ supported runtime in order to use `uglifier`. If you are using Mac OS X or Windows you have a JavaScript runtime installed in your operating system. NOTE: The `config.assets.compress` initialization option is no longer used in -Rails 4 to enable either CSS or JavaScript compression. Setting it will have no +Rails to enable either CSS or JavaScript compression. Setting it will have no effect on the application. Instead, setting `config.assets.css_compressor` and `config.assets.js_compressor` will control compression of CSS and JavaScript assets. @@ -1290,7 +1293,7 @@ config.assets.digest = true # config.assets.precompile += %w( search.js ) ``` -Rails 4 no longer sets default config values for Sprockets in `test.rb`, so +Rails 4 and above no longer set default config values for Sprockets in `test.rb`, so `test.rb` now requires Sprockets configuration. The old defaults in the test environment are: `config.assets.compile = true`, `config.assets.compress = false`, `config.assets.debug = false` and `config.assets.digest = false`. |