Methods
R
Instance Public methods
register_javascript_expansion(expansions)

Register one or more javascript files to be included when symbol is passed to javascript_include_tag. This method is typically intended to be called from plugin initialization to register javascript files that the plugin installed in public/javascripts.

ActionView::Helpers::AssetTagHelper.register_javascript_expansion :monkey => ["head", "body", "tail"]

javascript_include_tag :monkey # =>
  <script type="text/javascript" src="/javascripts/head.js"><%rscript>
  <script type="text/javascript" src="/javascripts/body.js"></script>
  <script type="text/javascript" src="/javascripts/tail.js"></script>

Source: show | on GitHub 

# File actionpack/lib/action_view/helpers/asset_tag_helpers/javascript_tag_helpers.rb, line 66
def register_javascript_expansion(expansions)
  js_expansions = JavascriptIncludeTag.expansions
  expansions.each do |key, values|
    js_expansions[key] = (js_expansions[key] || []) | Array(values)
  end
end