diff options
Diffstat (limited to 'actionpack/lib/action_view/helpers/capture_helper.rb')
| -rw-r--r-- | actionpack/lib/action_view/helpers/capture_helper.rb | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/actionpack/lib/action_view/helpers/capture_helper.rb b/actionpack/lib/action_view/helpers/capture_helper.rb index a8b5a9dbb9..c90acc5ac2 100644 --- a/actionpack/lib/action_view/helpers/capture_helper.rb +++ b/actionpack/lib/action_view/helpers/capture_helper.rb @@ -117,6 +117,28 @@ module ActionView @_content_for[name] end + # content_for? simply checks whether any content has been captured yet using content_for + # Useful to render parts of your layout differently based on what is in your views. + # + # ==== Examples + # + # Perhaps you will use different css in you layout if no content_for :right_column + # + # <%# This is the layout %> + # <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> + # <head> + # <title>My Website</title> + # <%= yield :script %> + # </head> + # <body class="<%= content_for?(:right_col) ? 'one-column' : 'two-column' %>"> + # <%= yield %> + # <%= yield :right_col %> + # </body> + # </html> + def content_for?(name) + @_content_for[name].present? + end + # Use an alternate output buffer for the duration of the block. # Defaults to a new empty string. def with_output_buffer(buf = nil) #:nodoc: |