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Editorial Team
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Asked: 2026-05-28T04:45:15+00:00

so basically my application looks like this <!DOCTYPE html> <html> <head> … </head> <body>

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so basically my application looks like this

<!DOCTYPE html>
<html>
<head>
    ...
</head>
<body>
<div id="content">
    <div id="content_left">
        // Some Stuff
    </div>

    <div id="content_right">
        <%= yield %>
    </div>
</div>
</body>
</html>

now i want to switch between a two column layout and a single column layout based on the controller (at best: also based on the method i’m using).

between the body and the content and also in there head there is way too much stuff for simply creating a second layout and adding this as a layoutcall in my controller without too much code duplication.

what i would love to do is something like this:

all should use this

<!DOCTYPE html>
<html>
<head>
    ...
</head>
<body>
 // much stuff
 <%= yield %>
</body>
</html>

and now i can switch between two layouts, f.e

single_col

<div id="content">
    <%= yield %>
</div>

or two_column

<div id="content">
    <div id="content_left">
        // Some Stuff
    </div>

    <div id="content_right">
        <%= yield %>
    </div>
</div>

and then in the last yield there should be the view that is related to my controller and method.

is there an easy way to achieve this?

thanks for all hints.

PLEASE leave a comment if something is unclear.

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1 Answer

  1. Editorial Team

    Put the different parts of the layouts in partials! Then you render the partials based on what is in
    params[:controller] and params[:action]. For example:

    <% if params[:controller] == "controller_name" %>
     <%= render 'partial_name1' %>
<% else %>
     <%= render 'partial_name2' %>
<% end %>

    The params[:controller] and params[:action] are always available! This is an example to show you how it works. Of cause there shjouldnt be any logic in the view aswell!

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