From 583d7c15c301f15f1e997a06e15b55a2e7bf794f Mon Sep 17 00:00:00 2001 From: Jacob Mattingley Date: Mon, 15 Aug 2011 16:00:53 -0700 Subject: [PATCH] Fixed mistakes in layouts/rendering guide about yield yield(:unspecified_block) actually returns true even if :unspecified_block never exists. This means you can't use the form yield(:unspecified_block) or yield. --- railties/guides/source/layouts_and_rendering.textile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/railties/guides/source/layouts_and_rendering.textile b/railties/guides/source/layouts_and_rendering.textile index 57485e89864..87ba8ab82dc 100644 --- a/railties/guides/source/layouts_and_rendering.textile +++ b/railties/guides/source/layouts_and_rendering.textile @@ -1179,14 +1179,14 @@ On pages generated by +NewsController+, you want to hide the top menu and add a <% end %> <% content_for :content do %>
Right menu items here
- <%= yield(:news_content) or yield %> + <%= content_for?(:news_content) ? yield(:news_content) : yield %> <% end %> <%= render :template => 'layouts/application' %> That's it. The News views will use the new layout, hiding the top menu and adding a new right menu inside the "content" div. -There are several ways of getting similar results with different sub-templating schemes using this technique. Note that there is no limit in nesting levels. One can use the +ActionView::render+ method via +render :template => 'layouts/news'+ to base a new layout on the News layout. If you are sure you will not subtemplate the +News+ layout, you can replace the +yield(:news_content) or yield+ with simply +yield+. +There are several ways of getting similar results with different sub-templating schemes using this technique. Note that there is no limit in nesting levels. One can use the +ActionView::render+ method via +render :template => 'layouts/news'+ to base a new layout on the News layout. If you are sure you will not subtemplate the +News+ layout, you can replace the +content_for?(:news_content) ? yield(:news_content) : yield+ with simply +yield+. h3. Changelog