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Editorial Team
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Asked: 2026-05-27T22:32:16+00:00

How do I pass an instance variable from my controller to my assets stylesheet?

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How do I pass an instance variable from my controller to my assets stylesheet?

Can I do something like this

preview_controller.rb

def show
 @design = Design.first
end

and my assets file is

preview.css.scss.erb

body{
  background-image: url('<%= @design.image_url.to_s %>');
}
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1 Answer

  1. Editorial Team

    You can’t do this (the assets are pre-compiled and do no have access to variables from the request). You could have this in your HTML page itself:

    <head>
  <%= stylesheet_link_tag "application" %>
  <style>
  body{
    background-image: url('<%= @design.image_url.to_s %>');
  }
  </style>
</head>
<body>
..

    It would achieve the same end result.

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