I don't know what's the best way to doing this.
On my application.html.erb I define a header div.
My default controller ( root ) is a homepage controller. And I wish that if I'm at index of the homepage the header is rendering with some content, but all other controllers render another content inside that header.
How can I make a condition in that header div to render different content based on the controller that's being rendered?
You can use the content_for helper to define a block of markup in individual view templates that's yielded to from the application layout.
application.html.erb:
<div id="header">
<%= yield :header %>
</div>
Then include code like this anywhere within a controller's view template:
<% content_for :header do %>
This is a controller-specific header.
<% end %>
Note that you can define as many of these blocks as you like, so you could have a conditional sidebar etc. as well.
