Prevent AssetNotPrecompiledError before it occurs.

gistfile1.rb

  # Checks that the precompile list contains this file or raises an error, in dev only
  # Note: You will need to move config.assets.precompile to application.rb from production.rb
  def javascript_include_tag *sources
    sources.each do |source|
      raise "Hey, #{source} is not in the precompile list. This will fall apart in production." unless Rails.application.config.assets.precompile.any? do |matcher|
        if matcher.is_a? Proc
          matcher.call(source)
        elsif matcher.is_a? Regexp
          matcher.match(source)
        else
          matcher.gsub(/\.js/,'') == source.gsub(/\.js/,'')
        end
      end
    end if Rails.env.development?
    super *sources
  end

Add this inside a helper (We have app/helpers/javascript_helper).

This will prevent Sprockets::Helpers::RailsHelper::AssetPaths::AssetNotPrecompiledError errors in production by checking that the javascript file you're trying to include is in the list of assets to be precompiled.

Note: You will need to move any additions to config.assets.precompile from config/environments/production.rb to config/application.rb.