Rails 3.1 asset pipeline: how to load controller-specific scripts?

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To load only the necessary name_of_the_js_file.js file:

  1. remove the //=require_tree from application.js

  2. keep your js file (that you want to load when a specific page is loaded) in the asset pipeline

  3. add a helper in application_helper.rb

    def javascript(*files)
  content_for(:head) { javascript_include_tag(*files) }
end

  4. yield into your layout:

    <%= yield(:head) %>

  5. add this in your view file:

    <% javascript 'name_of_the_js_file' %>

Then it should be ok

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