Dynamically adding a class to a div in a .erb with Ruby on Rails

Question

I have this div

<div class='notice'>

And I want the result to be

<div class="notice error">

And Is there a way to add a class in my erb? I tried

<div class="notice #{new_class}">

But that doesn't escape into ruby code when it renders...

and ideas?

Ju Nogueira · Accepted Answer · 2010-06-10 15:46:48Z

32

It's with <%= %>

<div class="notice <%= new_class %>">

answered Jun 10, 2010 at 15:46

Ju Nogueira

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Comments

Chowlett · Accepted Answer · 2010-06-10 15:55:26Z

15

I believe

<div class="notice <%= h new_class -%>">

works, albeit a little ugly. You could also do the prettier, but more longwinded

<%= content_tag(:div, "Your content here", :class => "notice #{new_class}") %>

answered Jun 10, 2010 at 15:55

Chowlett

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