Question

Working on my first Rails project, I used Ryan Bates’ Nifty-Generators to create the initial application files. This gives me a LayoutHelper with a title method:

def title(page_title, show_title = true)
  @content_for_title = page_title.to_s
  @show_title = show_title
end

In my homepage view, I have a simple title:

<%= title "Welcome" -%>

And finally, in my layout (application.html.erb), I have:

<%- if show_title? -%>
  <h1><%=h yield(:title) %></h1>
<%- end -%>

<%= yield %>

What I’m seeing is my title, “Welcome”, followed by the value passed (or defaulted to) for show_title. I want the former, but not the latter. I understand why the boolean is being implicitly returned by the method, but I didn’t expect it to be displayed. The boolean display seems to be appearing as part of the primary content yield.

The yield command still hasn’t really clicked for me yet (I get it, I just don’t get it, if that makes sense), so I’m hoping someone can help me understand why the boolean is being printed and how I can make it stop. That answer may help me better understand how yield works in addition to solving the immediate problem.

Thanks.

Answer 1

Try this:

<% title "Welcome" %>

You want to call the title method, not write out its return value when you call it.