mattbrictson · October 5, 2025 17:02 · Jun 27, 2023 · Feb 26, 2014
diff --git a/layouts_helper.rb b/layouts_helper.rb
@@ -11,7 +11,7 @@ module LayoutsHelper
   #
   def parent_layout(layout)
     @view_flow.set(:layout, output_buffer)
-    output = render(:file => "layouts/#{layout}")
+    output = render(template: "layouts/#{layout}")
     self.output_buffer = ActionView::OutputBuffer.new(output)
   end
 end
diff --git a/application.html.erb b/application.html.erb
@@ -0,0 +1,14 @@
+<%= render("shared/navbar") %>
+
+<div class="container">
+
+  <%= render("shared/alerts") %>
+  <%= render("shared/page_header") %>
+
+  <%= yield %>
+
+  <%= render("shared/footer") %>
+
+</div>
+
+<% parent_layout "base" %>
diff --git a/base.html.erb b/base.html.erb
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <%= stylesheet_link_tag("application", "data-turbolinks-track" => true) %>
+    <%= javascript_include_tag("application", "data-turbolinks-track" => true) %>
+
+    <%= yield(:head) %>
+
+    <meta charset="utf8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+
+    <%= csrf_meta_tags %>
+
+    <title>
+      <%= yield(:title) + " – " if content_for?(:title) %>
+      RailsStarter
+    </title>
+  </head>
+  <body>
+
+    <%= yield %>
+
+  </body>
+</html>
diff --git a/layouts_helper.rb b/layouts_helper.rb
@@ -0,0 +1,17 @@
+module LayoutsHelper
+  # Used to achieve nested layouts without content_for. This helper relies on
+  # Rails internals, so beware that it make break with future major versions
+  # of Rails. Inspired by http://stackoverflow.com/a/18214036
+  #
+  # Usage: For example, suppose "child" layout extends "parent" layout.
+  # Use <%= yield %> as you would with non-nested layouts, as usual. Then on
+  # the very last line of layouts/child.html.erb, include this:
+  #
+  #     <% parent_layout "parent" %>
+  #
+  def parent_layout(layout)
+    @view_flow.set(:layout, output_buffer)
+    output = render(:file => "layouts/#{layout}")
+    self.output_buffer = ActionView::OutputBuffer.new(output)
+  end
+end