helpers_asset_data_base64_helper.rb

module AssetDataBase64Helper
   def asset_data_base64(path)
     asset = Rails.application.assets.find_asset(path)
    throw "Could not find asset '#{path}'" if asset.nil? 
     base64 = Base64.encode64(asset.to_s).gsub(/\s+/, "")
    "data:#{asset.content_type};base64,#{Rack::Utils.escape(base64)}"
   end
 end