diff options
Diffstat (limited to 'actionpack/lib/action_view/helpers/capture_helper.rb')
| -rw-r--r-- | actionpack/lib/action_view/helpers/capture_helper.rb | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/actionpack/lib/action_view/helpers/capture_helper.rb b/actionpack/lib/action_view/helpers/capture_helper.rb index c88bd1efd5..0139714240 100644 --- a/actionpack/lib/action_view/helpers/capture_helper.rb +++ b/actionpack/lib/action_view/helpers/capture_helper.rb @@ -14,7 +14,7 @@ module ActionView # variable. You can then use this variable anywhere in your templates or layout. # # ==== Examples - # The capture method can be used in ERb templates... + # The capture method can be used in ERB templates... # # <% @greeting = capture do %> # Welcome to my shiny new web page! The date and time is @@ -107,8 +107,8 @@ module ActionView # <%= javascript_include_tag :defaults %> # <% end %> # - # That will place <tt>script</tt> tags for Prototype, Scriptaculous, and application.js (if it exists) - # on the page; this technique is useful if you'll only be using these scripts in a few views. + # That will place +script+ tags for your default set of JavaScript files on the page; + # this technique is useful if you'll only be using these scripts in a few views. # # Note that content_for concatenates the blocks it is given for a particular # identifier in order. For example: @@ -135,8 +135,19 @@ module ActionView # for elements that will be fragment cached. def content_for(name, content = nil, &block) content = capture(&block) if block_given? - @_content_for[name] << content if content - @_content_for[name] unless content + result = @_view_flow.append(name, content) if content + result unless content + end + + # The same as +content_for+ but when used with streaming flushes + # straight back to the layout. In other words, if you want to + # concatenate several times to the same buffer when rendering a given + # template, you should use +content_for+, if not, use +provide+ to tell + # the layout to stop looking for more contents. + def provide(name, content = nil, &block) + content = capture(&block) if block_given? + result = @_view_flow.append!(name, content) if content + result unless content end # content_for? simply checks whether any content has been captured yet using content_for @@ -158,7 +169,7 @@ module ActionView # </body> # </html> def content_for?(name) - @_content_for[name].present? + @_view_flow.get(name).present? end # Use an alternate output buffer for the duration of the block. |