diff options
Diffstat (limited to 'actionpack/lib/action_view/helpers/atom_feed_helper.rb')
| -rw-r--r-- | actionpack/lib/action_view/helpers/atom_feed_helper.rb | 54 |
1 files changed, 46 insertions, 8 deletions
diff --git a/actionpack/lib/action_view/helpers/atom_feed_helper.rb b/actionpack/lib/action_view/helpers/atom_feed_helper.rb index 8062d64924..ccb7df212a 100644 --- a/actionpack/lib/action_view/helpers/atom_feed_helper.rb +++ b/actionpack/lib/action_view/helpers/atom_feed_helper.rb @@ -75,8 +75,20 @@ module ActionView # end # end # + # The Atom spec defines five elements (content rights title subtitle + # summary) which may directly contain xhtml content if :type => 'xhtml' + # is specified as an attribute. If so, this helper will take care of + # the enclosing div and xhtml namespace declaration. Example usage: # - # atom_feed yields an AtomFeedBuilder instance. + # entry.summary :type => 'xhtml' do |xhtml| + # xhtml.p pluralize(order.line_items.count, "line item") + # xhtml.p "Shipped to #{order.address}" + # xhtml.p "Paid by #{order.pay_type}" + # end + # + # + # atom_feed yields an AtomFeedBuilder instance. Nested elements yield + # an AtomBuilder instance. def atom_feed(options = {}, &block) if options[:schema_date] options[:schema_date] = options[:schema_date].strftime("%Y-%m-%d") if options[:schema_date].respond_to?(:strftime) @@ -108,8 +120,38 @@ module ActionView end end + class AtomBuilder + def initialize(xml) + @xml = xml + end - class AtomFeedBuilder + private + # Delegate to xml builder, first wrapping the element in a xhtml + # namespaced div element if the method and arguments indicate + # that an xhtml_block? is desired. + def method_missing(method, *arguments, &block) + if xhtml_block?(method, arguments) + @xml.__send__(method, *arguments) do + @xml.div(:xmlns => 'http://www.w3.org/1999/xhtml') do |xhtml| + block.call(xhtml) + end + end + else + @xml.__send__(method, *arguments, &block) + end + end + + # True if the method name matches one of the five elements defined + # in the Atom spec as potentially containing XHTML content and + # if :type => 'xhtml' is, in fact, specified. + def xhtml_block?(method, arguments) + %w( content rights title subtitle summary ).include?(method.to_s) && + arguments.last.respond_to?(:[]) && + arguments.last[:type].to_s == 'xhtml' + end + end + + class AtomFeedBuilder < AtomBuilder def initialize(xml, view, feed_options = {}) @xml, @view, @feed_options = xml, view, feed_options end @@ -141,15 +183,11 @@ module ActionView @xml.link(:rel => 'alternate', :type => 'text/html', :href => options[:url] || @view.polymorphic_url(record)) - yield @xml + yield AtomBuilder.new(@xml) end end - - private - def method_missing(method, *arguments, &block) - @xml.__send__(method, *arguments, &block) - end end + end end end |