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| author | Jeroen van Dijk <jeroen@jeevidee.nl> | 2010-05-15 15:33:30 +0200 |
|---|---|---|
| committer | Jeroen van Dijk <jeroen@jeevidee.nl> | 2010-05-15 15:33:30 +0200 |
| commit | f45714bb4a45097834dda2da03f86697ee667ec1 (patch) | |
| tree | 569e9163f274b196db6b8e2adda6b66b4f7fde8c /actionpack | |
| parent | a447f76fe59bda978ed19a5ccf5513edb0be2be1 (diff) | |
| download | rails-f45714bb4a45097834dda2da03f86697ee667ec1.tar.gz rails-f45714bb4a45097834dda2da03f86697ee667ec1.tar.bz2 rails-f45714bb4a45097834dda2da03f86697ee667ec1.zip | |
Added extra documentation for content_for helper
Diffstat (limited to 'actionpack')
| -rw-r--r-- | actionpack/lib/action_view/helpers/capture_helper.rb | 31 |
1 files changed, 25 insertions, 6 deletions
diff --git a/actionpack/lib/action_view/helpers/capture_helper.rb b/actionpack/lib/action_view/helpers/capture_helper.rb index 20598237e9..edc6afc622 100644 --- a/actionpack/lib/action_view/helpers/capture_helper.rb +++ b/actionpack/lib/action_view/helpers/capture_helper.rb @@ -41,8 +41,11 @@ module ActionView end # Calling content_for stores a block of markup in an identifier for later use. - # You can make subsequent calls to the stored content in other templates or the layout - # by passing the identifier as an argument to <tt>yield</tt>. + # You can make subsequent calls to the stored content in other templates, helper modules + # or the layout by passing the identifier as an argument to <tt>content_for</tt>. + # + # Note: <tt>yield</tt> can still be used to retrieve the stored content, but calling + # <tt>yield</tt> doesn't work in helper modules, while <tt>content_for</tt> does. # # ==== Examples # @@ -50,11 +53,27 @@ module ActionView # alert('You are not authorized to do that!') # <% end %> # - # You can then use <tt>yield :not_authorized</tt> anywhere in your templates. + # You can then use <tt>content_for :not_authorized</tt> anywhere in your templates. + # + # <%= content_for :not_authorized if current_user.nil? %> + # + # This is equivalent to: # # <%= yield :not_authorized if current_user.nil? %> # - # You can also use this syntax alongside an existing call to <tt>yield</tt> in a layout. For example: + # <tt>content_for</tt>, however, can also be used in helper modules. + # + # module StorageHelper + # def stored_content + # content_for(:storage) || "Your storage is empty" + # end + # end + # + # This helper works just like normal helpers. + # + # <%= stored_content %> + # + # You can use the <tt>yield</tt> syntax alongside an existing call to <tt>yield</tt> in a layout. For example: # # <%# This is the layout %> # <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> @@ -67,7 +86,7 @@ module ActionView # </body> # </html> # - # And now, we'll create a view that has a content_for call that + # And now, we'll create a view that has a <tt>content_for</tt> call that # creates the <tt>script</tt> identifier. # # <%# This is our view %> @@ -103,7 +122,7 @@ module ActionView # # Then, in another template or layout, this code would render both links in order: # - # <ul><%= yield :navigation %></ul> + # <ul><%= content_for :navigation %></ul> # # Lastly, simple content can be passed as a parameter: # |