RailsGuide

静态文件处理

app/assetsapp/assets/javascriptsapp/assets/stylesheetsapp/assets/imageslib/assetsvendor/assets

stylesheet_link_tagjavascript_include_tagimage_tagasset_pathasset_data_urlrequirerequire_tree

<%= stylesheet_link_tag "application" %><%= javascript_include_tag "application" %><%= image_tag "rails.png" %>

application.css.erb

.class { background-image: url(<%= asset_path 'image.png' %>) }#logo { background: url(<%= asset_data_uri 'logo.png' %>) }

// ...
//= require jquery
//= require jquery_ujs
//= require_tree .

Pipeline assets can be placed inside an application in one of three locations: app/assets, lib/assets or vendor/assets.
app/assets is for assets that are owned by the application, such as custom images, JavaScript files or stylesheets.
lib/assets is for your own libraries' code that doesn't really fit into the 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.

When a file is referenced from a manifest or a helper, Sprockets searches the three default asset locations for it.
The default locations are: app/assets/images and the subdirectories javascripts and stylesheets in all three asset locations, but these subdirectories are not special. Any path under assets/* will be searched.

https://github.com/sstephenson/sprockets Rack-based asset packaging system CoffeeScript, Sass, SCSS and LESS.

https://github.com/amatsuda/kaminari A Scope & Engine based, clean, powerful, customizable and sophisticated paginator for Rails 3