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Editorial Team
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Asked: 2026-05-19T15:03:54+00:00

In PHP there’s a clever trick where, based on the URL of a page,

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In PHP there’s a clever trick where, based on the URL of a page, you can automatically assign a unique ID to the body tag of every page on your site. (which i find super helpful in writing CSS).

e.g.

<?php
        $url = explode('/',$_SERVER['REQUEST_URI']);
        $dir = $url[1] ? $url[1] : 'home';
?>

<body id="<?php echo $dir ?>">

-> source: http://css-tricks.com/snippets/wordpress/id-the-body-based-on-url/

The Result being that,

I’d like to know if there’s an, (ideally) equally simple and elegant, way to do the same in a Ruby on Rails based website?

Thanks so much for sharing your wisdom, oh great mucky mucks of code!

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1 Answer

  1. Editorial Team

    You could name it by controller and action by adding adding the following in application_controller.rb:

    before_filter :create_body_id
def create_body_id
  @body_id = "#{params[:controller]}-#{params[:action]}"
end

    Then add this in the template: id="<%= @body_id %>"

    For the index action in blog_controller you’d get id="blog-index"

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