Module: ActionView::Helpers::AssetTagHelper::StylesheetTagHelpers

### Home Classes Methods

### In Files

- lib/action_view/helpers/asset_tag_helpers/stylesheet_tag_helpers.rb

### Namespace

- MODULE ActionView::Helpers::AssetTagHelper::StylesheetTagHelpers::ClassMethods

### Methods

- #path_to_stylesheet
- #stylesheet_link_tag
- #stylesheet_path

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# ActionView::Helpers::AssetTagHelper::StylesheetTagHelpers

### Public Instance Methods

path_to_stylesheet(source) click to toggle source
Alias for: stylesheet_path
stylesheet_link_tag(*sources) click to toggle source

Returns a stylesheet link tag for the sources specified as arguments. If you don't specify an extension, `.css` will be appended automatically. You can modify the link attributes by passing a hash as the last argument. For historical reasons, the 'media' attribute will always be present and defaults to "screen", so you must explicitely set it to "all" for the stylesheet(s) to apply to all media types.

#### Examples

    stylesheet_link_tag "style" # =>
      <link href="/stylesheets/style.css" media="screen" rel="stylesheet" type="text/css" />

    stylesheet_link_tag "style.css" # =>
      <link href="/stylesheets/style.css" media="screen" rel="stylesheet" type="text/css" />

    stylesheet_link_tag "http://www.example.com/style.css" # =>
      <link href="http://www.example.com/style.css" media="screen" rel="stylesheet" type="text/css" />

    stylesheet_link_tag "style", :media => "all" # =>
      <link href="/stylesheets/style.css" media="all" rel="stylesheet" type="text/css" />

    stylesheet_link_tag "style", :media => "print" # =>
      <link href="/stylesheets/style.css" media="print" rel="stylesheet" type="text/css" />

    stylesheet_link_tag "random.styles", "/css/stylish" # =>
      <link href="/stylesheets/random.styles" media="screen" rel="stylesheet" type="text/css" />
      <link href="/css/stylish.css" media="screen" rel="stylesheet" type="text/css" />

You can also include all styles in the stylesheets directory using `:all` as the source:

    stylesheet_link_tag :all # =>
      <link href="/stylesheets/style1.css"  media="screen" rel="stylesheet" type="text/css" />
      <link href="/stylesheets/styleB.css"  media="screen" rel="stylesheet" type="text/css" />
      <link href="/stylesheets/styleX2.css" media="screen" rel="stylesheet" type="text/css" />

If you want Rails to search in all the subdirectories under stylesheets, you should explicitly set `:recursive`:

    stylesheet_link_tag :all, :recursive => true

## Caching multiple stylesheets into one

You can also cache multiple stylesheets into one file, which requires less HTTP connections and can better be compressed by gzip (leading to faster transfers). Caching will only happen if config.perform_caching is set to true (which is the case by default for the Rails production environment, but not for the development environment). Examples:

#### Examples

    stylesheet_link_tag :all, :cache => true # when config.perform_caching is false =>
      <link href="/stylesheets/style1.css"  media="screen" rel="stylesheet" type="text/css" />
      <link href="/stylesheets/styleB.css"  media="screen" rel="stylesheet" type="text/css" />
      <link href="/stylesheets/styleX2.css" media="screen" rel="stylesheet" type="text/css" />

    stylesheet_link_tag :all, :cache => true # when config.perform_caching is true =>
      <link href="/stylesheets/all.css"  media="screen" rel="stylesheet" type="text/css" />

    stylesheet_link_tag "shop", "cart", "checkout", :cache => "payment" # when config.perform_caching is false =>
      <link href="/stylesheets/shop.css"  media="screen" rel="stylesheet" type="text/css" />
      <link href="/stylesheets/cart.css"  media="screen" rel="stylesheet" type="text/css" />
      <link href="/stylesheets/checkout.css" media="screen" rel="stylesheet" type="text/css" />

    stylesheet_link_tag "shop", "cart", "checkout", :cache => "payment" # when config.perform_caching is true =>
      <link href="/stylesheets/payment.css"  media="screen" rel="stylesheet" type="text/css" />

The `:recursive` option is also available for caching:

    stylesheet_link_tag :all, :cache => true, :recursive => true

To force concatenation (even in development mode) set `:concat` to true. This is useful if you have too many stylesheets for IE to load.

    stylesheet_link_tag :all, :concat => true

    # File lib/action_view/helpers/asset_tag_helpers/stylesheet_tag_helpers.rb, line 139
    def stylesheet_link_tag(*sources)
      @stylesheet_include ||= StylesheetIncludeTag.new(config, asset_paths)
      @stylesheet_include.include_tag(*sources)
    end

stylesheet_path(source) click to toggle source

Computes the path to a stylesheet asset in the public stylesheets directory. If the `source` filename has no extension, `.css` will be appended (except for explicit URIs). Full paths from the document root will be passed through. Used internally by `stylesheet_link_tag` to build the stylesheet path.

#### Examples

    stylesheet_path "style"                                  # => /stylesheets/style.css
    stylesheet_path "dir/style.css"                          # => /stylesheets/dir/style.css
    stylesheet_path "/dir/style.css"                         # => /dir/style.css
    stylesheet_path "http://www.example.com/css/style"       # => http://www.example.com/css/style
    stylesheet_path "http://www.example.com/css/style.css"   # => http://www.example.com/css/style.css

    # File lib/action_view/helpers/asset_tag_helpers/stylesheet_tag_helpers.rb, line 63
    def stylesheet_path(source)
      asset_paths.compute_public_path(source, 'stylesheets', :ext => 'css', :protocol => :request)
    end

Also aliased as: path_to_stylesheet

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